51
Cancer Biol Med 2021. doi: 10.20892/j.issn.2095-3941.2020.0207 ORIGINAL ARTICLE Diagnostic value of 5 serum biomarkers for hepatocellular carcinoma with different epidemiological backgrounds: A large-scale, retrospective study Dongming Liu 1 *, Yi Luo 2 *, Lu Chen 1 *, Liwei Chen 2 , Duo Zuo 3 , Yueguo Li 3 , Xiaofang Zhang 4 , Jing Wu 5 , Qing Xi 2 , Guangtao Li 2 , Lisha Qi 6 , Xiaofen Yue 7 , Xiehua Zhang 8 , Zhuoyu Sun 9 , Ning Zhang 10 , Tianqiang Song 1 , Wei Lu 1 , Hua Guo 2 1 Department of Hepatobiliary, Liver Cancer Research Center for Prevention and Therapy; 2 Department of Tumor Cell Biology; 3 Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin’s Clinical Research Center for Cancer, Tianjin 300060, China; 4 Medical Laboratory, Tianjin Medical University General Hospital, Tianjin 300052, China; 5 Clinical Laboratory, Tianjin Third Central Hospital, Tianjin 300170, China; 6 Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin’s Clinical Research Center for Cancer, Tianjin 300060, China; 7 Department of Tianjin Research Institute of Liver Diseases, Tianjin Second People’s Hospital, Tianjin 300192, China; 8 Department of Infectious Diseases, The First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014010, China; 9 Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin 300070, China; 10 The Center for Translational Cancer Research, Peking University First Hospital, Beijing 100034, China ABSTRACT Objective: Hepatocellular carcinoma (HCC) is a lethal global disease that requires an accurate diagnosis. We assessed the potential of 5 serum biomarkers (AFP, AFU, GGT-II, GPC3, and HGF) in the diagnosis of HCC. Methods: In this retrospective study, we measured the serum levels of each biomarker using ELISAs in 921 participants, including 298 patients with HCC, 154 patients with chronic hepatitis (CH), 122 patients with liver cirrhosis (LC), and 347 healthy controls from 3 hospitals. Patients negative for hepatitis B surface antigen and hepatitis C antibody (called “NBNC-HCC”) and patients positive for the above indices (called “HBV-HCC and HCV-HCC”) were enrolled. The selected diagnostic model was constructed using a training cohort (n = 468), and a validation cohort (n = 453) was used to validate our results. Receiver operating characteristic analysis was used to evaluate the diagnostic accuracy. Results: The α-L-fucosidase (AFU)/α-fetoprotein (AFP) combination was best able to distinguish NBNC-HCC [area under the curve: 0.986 (95% confidence interval: 0.958–0.997), sensitivity: 92.6%, specificity: 98.9%] from healthy controls in the test cohort. For screening populations at risk of developing HCC (CH and LC), the AFP/AFU combination improved the diagnostic specificity for early-stage HCC [area under the curve: 0.776 (0.712–0.831), sensitivity: 52.5%, specificity: 91.6% in the test group]. In all-stage HBV-HCC and HCV-HCC, AFU was also the best candidate biomarker combined with AFP [area under the curve: 0.835 (0.784– 0.877), sensitivity 69.1%, specificity: 87.4% in the test group]. All results were verified in the validation group. Conclusions: The AFP/AFU combination could be used to identify NBNC-HCC from healthy controls and hepatitis-related HCC from at-risk patients. KEYWORDS Hepatocellular carcinoma; serum; biomarker; AFP; AFU Introduction Hepatocellular carcinoma (HCC) is the third leading cause of cancer death worldwide, accounting for more than 600,000 deaths each year 1-3 . The prognoses of HCC patients are gen- erally poor, and the median survival of patients is only 6–20 months 4,5 . The main reason for the poor prognosis of HCC is the lack of a timely and accurate diagnosis 6,7 . Thus, according *These authors contributed equally to this work. Correspondence to: Hua Guo, Wei Lu, Tianqiang Song E-mail: [email protected], [email protected], [email protected] ORCID ID: https://orcid.org/0000-0002-3345-8005, https://orcid.org/0000-0001-9467-3780, https://orcid. org/0000-0001-6465-4300 Received May 04, 2020; accepted October 13, 2020. Available at www.cancerbiomed.org ©2021 Cancer Biology & Medicine. Creative Commons Attribution-NonCommercial 4.0 International License

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Page 1: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med 2021. doi: 10.20892/j.issn.2095-3941.2020.0207

ORIGINAL ARTICLE

Diagnostic value of 5 serum biomarkers for hepatocellular carcinoma with different epidemiological backgrounds: A large-scale, retrospective study

Dongming Liu1*, Yi Luo2*, Lu Chen1*, Liwei Chen2, Duo Zuo3, Yueguo Li3, Xiaofang Zhang4, Jing Wu5, Qing Xi2, Guangtao Li2, Lisha Qi6, Xiaofen Yue7, Xiehua Zhang8, Zhuoyu Sun9, Ning Zhang10, Tianqiang Song1, Wei Lu1, Hua Guo2

1Department of Hepatobiliary, Liver Cancer Research Center for Prevention and Therapy; 2Department of Tumor Cell Biology; 3Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin’s Clinical Research Center for Cancer, Tianjin 300060, China; 4Medical Laboratory, Tianjin Medical University General Hospital, Tianjin 300052, China; 5Clinical Laboratory, Tianjin Third Central Hospital, Tianjin 300170, China; 6Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin’s Clinical Research Center for Cancer, Tianjin 300060, China; 7Department of Tianjin Research Institute of Liver Diseases, Tianjin Second People’s Hospital, Tianjin 300192, China; 8Department of Infectious Diseases, The First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014010, China; 9Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin 300070, China; 10The Center for Translational Cancer Research, Peking University First Hospital, Beijing 100034, China

ABSTRACT Objective: Hepatocellular carcinoma (HCC) is a lethal global disease that requires an accurate diagnosis. We assessed the potential of

5 serum biomarkers (AFP, AFU, GGT-II, GPC3, and HGF) in the diagnosis of HCC.

Methods: In this retrospective study, we measured the serum levels of each biomarker using ELISAs in 921 participants, including

298 patients with HCC, 154 patients with chronic hepatitis (CH), 122 patients with liver cirrhosis (LC), and 347 healthy controls

from 3 hospitals. Patients negative for hepatitis B surface antigen and hepatitis C antibody (called “NBNC-HCC”) and patients

positive for the above indices (called “HBV-HCC and HCV-HCC”) were enrolled. The selected diagnostic model was constructed

using a training cohort (n = 468), and a validation cohort (n = 453) was used to validate our results. Receiver operating characteristic

analysis was used to evaluate the diagnostic accuracy.

Results: The α-L-fucosidase (AFU)/α-fetoprotein (AFP) combination was best able to distinguish NBNC-HCC [area under the

curve: 0.986 (95% confidence interval: 0.958–0.997), sensitivity: 92.6%, specificity: 98.9%] from healthy controls in the test cohort.

For screening populations at risk of developing HCC (CH and LC), the AFP/AFU combination improved the diagnostic specificity

for early-stage HCC [area under the curve: 0.776 (0.712–0.831), sensitivity: 52.5%, specificity: 91.6% in the test group]. In all-stage

HBV-HCC and HCV-HCC, AFU was also the best candidate biomarker combined with AFP [area under the curve: 0.835 (0.784–

0.877), sensitivity 69.1%, specificity: 87.4% in the test group]. All results were verified in the validation group.

Conclusions: The AFP/AFU combination could be used to identify NBNC-HCC from healthy controls and hepatitis-related HCC

from at-risk patients.

KEYWORDS Hepatocellular carcinoma; serum; biomarker; AFP; AFU

Introduction

Hepatocellular carcinoma (HCC) is the third leading cause of

cancer death worldwide, accounting for more than 600,000

deaths each year1-3. The prognoses of HCC patients are gen-

erally poor, and the median survival of patients is only 6–20

months4,5. The main reason for the poor prognosis of HCC is

the lack of a timely and accurate diagnosis6,7. Thus, according

*These authors contributed equally to this work.Correspondence to: Hua Guo, Wei Lu, Tianqiang SongE-mail: [email protected], [email protected], [email protected] ID: https://orcid.org/0000-0002-3345-8005, https://orcid.org/0000-0001-9467-3780, https://orcid.org/0000-0001-6465-4300Received May 04, 2020; accepted October 13, 2020.Available at www.cancerbiomed.org©2021 Cancer Biology & Medicine. Creative Commons Attribution-NonCommercial 4.0 International License

Page 2: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 257

to the epidemiological characteristics of HCC, we divided our

research protocol into the diagnoses of NBNC-HCC patients

(patients who are negative for hepatitis B surface antigen and

hepatitis C antibody)8 and the diagnosis of hepatitis (such

as HBV or HCV)-related HCC patients9,10. Although hepati-

tis-related HCC accounts for the greatest percentage of HCC

patients in China, the percentage of NBNC-HCC patients is

rapidly increasing8,11. Thus, we recruited this type of HCC

patient. We also enrolled patients with a history of alco-

hol use, aflatoxin exposure, or nonalcoholic steatohepatitis

as the “healthy controls,” when compared with the NBNC-

HCC patients. This study was conducted because it is critical

to develop novel assays to identify NBNC-HCC patients, to

increase the likelihood of effective treatments.

When diagnosed at an early stage, HCC can be treated with

surgery, transplantation, or radiofrequency ablation, which

results in a 5-year survival of 40%–70%12, whereas the lack of

effective treatments for patients diagnosed with mid- or late-

stage disease is associated with a dramatic decrease in survival.

Despite the low sensitivity, α-fetoprotein (AFP) is a unique

serum biomarker for HCC. Unfortunately, the level of AFP

may be elevated in patients with nonmalignant chronic liver

diseases, including approximately 40% of patients with hepa-

titis and 30% of patients with cirrhosis13. Thus, only approx-

imately 10%–40% of HCC patients are diagnosed at an early

stage using the current AFP-based procedures14. This limita-

tion restricts the early diagnoses of HBV-HCC and HCV-HCC

based on serum AFP levels.

Over the past several years, serum microRNA panels have

become a promising approach for diagnosing early-stage

HCC. These panels differentiate HCC patients from healthy

and at-risk controls, and provide prognostic values for HCC15.

However, these panels often require the accurate detection of

several serum miRNA levels, which may be complicated and

costly for HCC screening in large populations. Thus, use of

serum protein biomarkers is still a reliable and economic

approach for screening HCC in a large population. In the past

decade, many studies of serum biomarkers for detecting HCC

have been documented12,16-18. More studies have been focused

on HBV-HCC, with few studies associated with various etiol-

ogies, such as hepatitis C virus infection, alcohol-related liver

disease, or nonalcoholic steatohepatitis.

Numerous protein serum biomarkers have been suggested

for diagnosing HCC, including α-L-fucosidase (AFU), γ-glu-

tamyl transferase isoenzyme II (GGT-II), glypican-3 (GPC3),

and hepatocyte growth factor (HGF)19-22. AFU is a lysosomal

enzyme detected in most mammalian cells, and is related to

the degradation of fucose-containing fucoglycoconjugates23.

The expression of AFU was higher in HCC samples than in

healthy controls and in patients with chronic hepatic disease24.

GPC3 is a component of heparin sulfate proteoglycans25. It

is highly expressed in HCC cells and tissues26. Recent studies

reported that GPC3 was examined in HCC cells, but not in

benign liver tissues27. GGT-II acted as the second candidate

serum marker and was shown to have a higher sensitivity and

specificity for hepatoma patients. Surprisingly, it was almost

undetectable in other chronic liver diseases28. Cui et al.19

observed a lower sensitivity and specificity of GGT-II of 74%

and 82.2%, respectively. However, their findings still showed

GGT-II might be a promising supplemental biomarker for

HCC diagnosis. HGF is many times dysregulated, playing an

essential role in malignant tumors, including HCC29. Kim

et al.30 reported that the combination of serum bFGF and

HGF levels might be candidate biomarkers for HCC patients

who could benefit from sorafenib therapy. However, limi-

tations such as small sample sizes and single-center designs

have prevented their widespread application.

Herein, we evaluated the sensitivity and specificity of these

biomarkers in a large-scale, retrospective study to identify

a more accurate diagnostic method for NBNC-HCC and

hepatitis-related HCC screening in normal populations and

at-risk populations. Our results showed that the combination

of AFU and AFP protein biomarkers detected NBNC-HCC

in the normal population and in hepatitis-related HCC in

the at-risk population with stable and reliable cut-off values.

Moreover, the combination maintained diagnostic specificity

and improved the sensitivity for the detection of NBNC-HCC

and hepatitis-related HCC populations, when compared with

AFP alone.

Materials and methods

Ethical approval

Our experiments on human subjects were in accordance with

the ethical standards of the Helsinki Declaration (amended

in 2000) of the World Medical Association. In addition, this

study was approved by the Ethics Committees of Tianjin

Medical University Cancer Institute and Hospital (Approval

No. bc2020083). All patients were informed about the study,

and gave their consent for participation.

Page 3: Diagnostic value of 5 serum biomarkers for hepatocellular

258 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Study design and patients

A total of 996 subjects who visited the Tianjin Medical University

Cancer Institute and Hospital, Tianjin Medical University

General Hospital or Tianjin Third Central Hospital between July

2012 and April 2014 were recruited in this study for different

cohorts (Supplementary Figure S1). Patients with HCC were

diagnosed based on ultrasound, computed tomography, or mag-

netic resonance imaging, and the diagnoses were confirmed his-

topathologically according to the AASLD guidelines. According

to different etiologies, we divided the HCC patients into the hep-

atitis-related HCC and NBNC-HCC groups. Tumor stage was

defined according to the Barcelona Clinic Liver Cancer (BCLC)

staging system. For the purpose of this study, we classified tum-

ors with BCLC stage 0 + A as early-stage hepatitis-related HCC

and patients who were suffering from chronic hepatitis or liver

cirrhosis as at-risk patients. None of the patients underwent any

treatment, including surgery, chemotherapy, or radiotherapy,

before blood sampling. The diagnosis of cirrhosis was confirmed

by liver biopsy and/or clinical, laboratory, and imaging evidence.

Chronic hepatitis was defined as chronic necroinflammatory

disease of the liver caused by persistent HBV or HCV infection.

Healthy controls were used for comparison with NBNC-HCC

patients. They were recruited from the Physical Examination

Center at Tianjin Medical University Cancer Institute and

Hospital, and were eligible if they had no viral hepatitis and no

malignant disease. Participants with a history of alcohol use, afla-

toxin exposure, or nonalcoholic steatohepatitis also met the cri-

teria for healthy controls. Patients were excluded for the follow-

ing reasons: (1) 27 patients had primary liver cancer other than

HCC, (2) 2 patients had metastatic liver cancer, (3) 11 patients

had liver sarcoma or adenocarcinoma, and (4) 35 patients did

not have available clinical data. Thus, 468 patients, including

150 HCC patients (123 hepatitis-related HCC patients and 27

NBNC-HCC patients), 82 chronic hepatitis (CH) patients, 61

liver cirrhosis (LC) patients, and 175 healthy controls (HC), were

recruited from the three hospitals as the test group between July

2012 and June 2013. When we finished the analysis of the test

group, 453 patients who were matched for age and sex with the

test group were recruited from the same hospitals as the valida-

tion group. The validation cohort was comprised of 121 hepati-

tis-related HCC patients, 72 CH patients, and 61 LC patients as

one subgroup and 27 NBNC-HCC patients and 172 HC patients

as another subgroup. The data involving 5 factors and demo-

graphic characteristics such as sex and age of patients are listed

in Supplementary Table S1–S5.

Statistical analysis

Statistical analyses were performed using SPSS statistical soft-

ware for Windows, version 25.0 (SPSS, Chicago, IL, USA) and

MedCalc, version 18.2.1 (https://www.medcalc.org/). Differences

between two independent groups were tested using the Mann-

Whitney U test (continuous variables and nonparametric anal-

yses). P values < 0.05 were considered to be significant, and all

P values were two-sided. To assess whether the combination of

AFU and AFP was better than either of them alone, a new varia-

ble predicted probability (P) for HCC was created on the basis of

an equation obtained by binary logistic regression:

(a). all-stage HBV-HCC and HCV-HCC vs. CH and LC in the test cohort: (P): 0.007668*AFP + 0.033718*AFU-1.347426

(b). all-stage HBV-HCC and HCV-HCC vs. CH and LC in the validation cohort(P): 0.001227*AFP + 0.017566*AFU-0.957458

(c). early-stage HBV-HCC and HCV-HCC vs. CH and LC in the test cohort(P): 0.005890*AFP + 0.018753*AFU-1.557863

(d). early-stage HBV-HCC and HCV-HCC vs. CH and LC in the validation cohort(P): 0.000921*AFP + 0.011742*AFU-1.166897

(e). NBNC-HCC vs. HC in the test cohort(P): 0.059672*AFP + 0.403175*AFU-8.669705

(f). NBNC-HCC vs. HC in the validation cohort(P): 0.047177*AFP + 0.211019*AFU-5.707287

Nomogram for the hepatitis-related HCC and NBNC-HCC populations

A nomogram was formulated based on the results of logistic

regression analyses and by using the rms package of R, ver-

sion 3.0 (http://www.r-project.org/). The nomogram was

based on proportionally converting each regression coefficient

in multivariate logistic regression to a total points scale. For

the diagnosis of HCC based on the model, the total score for

each participant was calculated with the nomogram. We could

preliminarily predict the likelihood of a participant suffering

from HCC based on the probability.

Blood samples

Blood samples were obtained by peripheral venous puncture

before any surgical or chemotherapeutic treatment. After clot-

ting and within 1 h of collection, the blood samples were cen-

trifuged at 3,000 × g for 5 min, and serum aliquots were stored

at –80 °C until analysis.

Page 4: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 259

Serum tumor marker detection

The AFP, AFU, GGT-II, GPC3, and HGF serum levels were

analyzed according to the manufacturer’s instructions using

ELISA kits (Cusabio, Wuhan, China and eBioscience, San

Diego, CA, USA). All assays were performed in duplicate.

Immunohistochemistry (IHC) staining

IHC staining was used to examine the expression levels of

AFU in paraffin-embedded samples of HCC tissues accord-

ing to previously described methods31. An anti-AFU (FUCA2)

antibody was purchased from Bioss (bs-16192R, 1:200; Bioss,

Woburn, MA, USA). The IHC score was used to evaluate the

correlation between AFU expression and overall survival (OS)

and disease-free survival (DFS) of HCC patients.

Bioinformatic analysis

Correlation between AFU or AFP/AFU combination expres-

sion and overall/DFS in HCC patients was based on the

Kaplan-Meier method (http://kmplot.com/analysis/). The

threshold of significance was set at P < 0.05.

Results

The serum levels of AFP, AFU, GPC3, GGT-II, and HGF in the test group

In the test cohort, all 463 patients were tested for serum

levels of AFP, AFU, GPC3, GGT-II, and HGF. The median

plasma levels of all 5 tumor markers were found to be sig-

nificantly higher in the NBNC-HCC subgroup than in the

healthy controls (Figure 1A–1E). In the HBV-HCC and

HCV-HCC subgroups, the levels of AFU, GPC3, and GGT-II

were significantly higher in the LC group than in the CH

group (Figure 1B–1D), suggesting that elevated levels of

these three biomarkers may be associated with the progres-

sion of hepatitis to liver cirrhosis. The HBV-HCC and HCV-

HCC patient median plasma levels of AFP, AFU, and HGF

were found to be significantly higher than those of the CH

and LC patients (Figure 1A, 1B, and 1E), indicating that a

high expression of these biomarkers was associated with the

progression of liver disease. Generally, a high level of these

3 candidate markers was associated with the onset of HBV-

HCC and HCV-HCC.

The combination of AFP and AFU had high accuracy in the detection of NBNC-HCC

The area under the curve (AUC) values of AFP, AFU, GPC3,

GGT-II, and HGF were 0.792, 0.967, 0.825, 0.824, and 0.759,

respectively (Figure 2A–2E). Each serum biomarker could

be a candidate serum biomarker combined with AFP in

diagnosing NBNC-HCC. Thus, we determined the different

values of the receiver operating characteristic (ROC) curve

with various combinations of serum biomarkers (AFP, AFU,

GPC3, GGT-II, and HGF). The 5 biomarker combinations

performed well (AUC: 0.989, sensitivity: 92.6%, specificity:

98.9%) (Figure 2F). The best 4/3/2 biomarker combinations

had a similar AUC, sensitivity, and specificity compared with

the 5 biomarker combination (AUC: 0.989, sensitivity: 92.6%,

specificity: 99.4%; AUC: 0.989, sensitivity: 92.6%, specific-

ity: 99.4%; AUC: 0.986, sensitivity: 92.6%, specificity: 98.9%,

respectively) (Figure 2G–2I). The combination results of the

remaining serum indicators are shown in Supplementary

Figure S2–S4. After combining various factors (such as AUC,

sensitivity, and specificity), we chose the combination of AFP

and AFU as the diagnostic combination for NBNC-HCC. The

predictive values and likelihood ratios for AFU and AFP in the

diagnosis of NBNC-HCC are shown in Table 1. The combi-

nation improved the sensitivity of AFP in diagnosing NBNC-

HCC, while the specificity was relatively unchanged.

According to the stable cutoff value of AFP and AFU in

detecting NBNC-HCC, we verified the results of the test

cohort in the validation cohort. First, the trends of AFP and

AFU concentrations in healthy controls and NBNC-HCC

patients were consistent with those in the test cohort (Figure

1F and 1G). Furthermore, the AUC, sensitivity, specificity, PPV

(positive predictive value), NPV (negative predictive value),

positive LR (likelihood ratio), and negative LR of AFP, AFU,

and their combinations were similar to those in the test cohort

at the optimum cut-off value (Supplementary Figure S5 and

Table 1). The AUC of the combination was better than any

other single biomarker (only AFP or AFU) of NBNC-HCC in

the test and validation groups (Figure 3A and 3B). We used a

nomogram model for the clinical application of these 2 serum

markers (Figure 3C). For example, if the AFP and AFU values

of a “healthy person” (including individuals with a history of

alcohol, aflatoxin exposure, or nonalcoholic steatohepatitis)

were 50 ng/mL and 20 mU/mL, respectively, then based on the

nomogram model, the probability of this participant develop-

ing NBNC-HCC was nearly 90%.

Page 5: Diagnostic value of 5 serum biomarkers for hepatocellular

260 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

0

200

400

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CH LC HC

NBNC-HCC

HBV- and HCV-HCC

CH LC HC

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*****

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Figure 1 The median plasma levels of AFP (A), AFU (B), GPC3 (C), GGT-II (D), and HGF (E) in the test cohort and AFP (F) and AFU (G) in the validation cohort. HC, healthy controls; CH, chronic hepatitis; LC, liver cirrhosis; HCC, hepatocellular carcinoma. *P < 0.05; **P < 0.01; ***P < 0.001; P > 0.05 means no significance (NS).

Page 6: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 261

The combined AFP/AFU panel showed an improvement in the diagnostic sensitivity for the detection of all-stage and early-stage hepatitis-related HCC

The AUC values of AFP, AFU, GPC3, GGT-II, and HGF in the

all-stage HBV-HCC and HCV-HCC groups were 0.780, 0.752,

0.520, 0.547, and 0.735, respectively (Figure 4A–4E). Because

there was no significance between GGT-II and GPC3 in

detecting all-stage HBV-HCC and HCV-HCC, we chose AFP,

AFU, and HGF in a combination model (Figure 4F–4I). The

diagnostic performance of the serum biomarkers in different

subgroups was further evaluated. Among these combinations,

the AFP/AFU panel outperformed the others and exhibited a

0 0.2 0.4

AUC = 0.79295% CI (0.729–0.845)

AUC = 0.82495% CI (0.764–0.874)

AUC = 0.98995% CI (0.963–0.998)

AUC = 0.98995% CI (0.963–0.998)

AUC = 0.98695% CI (0.958–0.997)

AUC = 0.75995% CI (0.694–0.817)

AUC = 0.98995% CI (0.963–0.998)

AUC = 0.96795% CI (0.932–0.987)

AUC = 0.82595% CI (0.766–0.875)

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1.0

AFP + AFU + HGF AFP + AFU + GPC3 + HGF

Figure 2 The receiver operating characteristic curve of AFP (A), AFU (B), GPC3 (C), GGT-II (D), HGF (E), AFP + AFU + GGT-II + GPC3 + HGF (F), AFP + AFU + GPC3 + HGF (G), AFP + AFU + HGF (H), and AFP + AFU (I) in the detection of the NBNC-HCC test group. The sensitivity and specificity represented by the red dots are shown in detail (lower). (A). AFP sensitivity: 59.3% and specificity: 98.9%; (B). AFU sensitivity: 85.2% and specificity: 98.9%; (C). GPC3 sensitivity: 100.0% and specificity: 72.6%; (D). GGT-II sensitivity: 92.6% and specificity: 58.3%; (E). HGF sensi-tivity: 51.9% and specificity: 88.6%; (F). AFP + AFU + GPC3 + GGT-II + HGF sensitivity: 92.6% and specificity: 98.9%; (G). AFP + AFU + GPC3 + HGF sensitivity: 92.6% and specificity: 99.4%; (H). AFP + AFU + HGF sensitivity: 92.6% and specificity: 99.4%; (I). AFP + AFU sensitivity: 92.6% and specificity: 98.9%.

Page 7: Diagnostic value of 5 serum biomarkers for hepatocellular

262 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

greater diagnostic sensitivity and specificity for the differen-

tiation of all-stage HBV-HCC and HCV-HCC patients from

CH and LC patients [AUC: 0.835 (0.784–0.877), sensitivity:

69.1%, specificity: 87.4%] (Figure 4G). The diagnostic values

of serum AFP and AFU were 42.34 ng/mL and 13.94 mU/mL,

respectively. Regarding early stage HBV-HCC and HCV-HCC,

the AUC values of AFP, AFU, GPC3, GGT-II, and HGF were

0.741, 0.666, 0.517, 0.510, and 0.665, respectively (Figure

5A–5E). We observed similar results in this test cohort with

the all-stage HBV-HCC and HCV-HCC groups. AFP, AFU, and

HGF were selected for the combination model (Figure 5F–5I).

The AFP/AFU combination was also notable for early-stage

HBV-HCC and HCV-HCC [AUC: 0.776 (0.712–0.831), sen-

sitivity: 52.5%, specificity: 91.6%] in the test cohort (Figure

5G). In summary, the AFP/AFU panel improved the diagnos-

tic sensitivity without a loss of specificity in the detection of

all-stage HBV-HCC and HCV-HCC (Table 2: AFP vs. AFP +

AFU: sensitivity 52.8% vs. 69.1%, specificity 93.7% vs. 87.4%)

and early-stage HBV-HCC and HCV-HCC (Table 2: AFP vs.

AFP + AFU, sensitivity: 44.3% vs. 52.5%, specificity: 93.7% vs.

91.6%) among at-risk patients.

In the validation cohort, the concentrations of AFP and

AFU in CH-, LC-, and hepatitis-related HCC patients are

shown in Figure 1F and 1G. The results were similar to those

in the test cohort. The ROC curves of single serum markers

and combined serum markers in the validation group are

shown in Supplementary Figure S6 (the results for all-stage

HBV-HCC and HCV-HCC are shown in A, B, and E; the

results for early-stage HBV-HCC and HCV-HCC are shown

in C, D, and F). Compared with the optimum diagnostic cut-

off values of AFP and AFU for HBV-HCC and HCV-HCC in

the test group, the parameter values in the validation group

for all-stage and early-stage hepatitis-related HCC are sum-

marized in Table 2 [AUC: 0.841 (0.790–0.884), sensitivity:

71.9%, specificity: 86.5% in the validation cohort for all-stage

HBV-HCC and HCV-HCC; AUC: 0.791 (0.728–0.845), sensi-

tivity: 75.4%, specificity: 73.7% in the validation cohort for

early-stage HBV-HCC and HCV-HCC]. The AUC of the AFP/

AFU combination was better than any other single biomarker

(only AFP or AFU) of all-stage (Figure 6A and 6B) and

early-stage (Figure 6C and 6D) hepatitis-related HCC in the

test and validation groups. We also constructed a nomogram

model for the clinical application of these 2 serum markers in

HBV-HCC and HCV-HCC (Figure 6E). For example, if the

AFP and AFU values of an “at-risk person” (such as an indi-

vidual with HBV or HCV) were 60 ng/mL and 25 mU/mL, Tabl

e 1

Resu

lts fo

r the

mea

sure

men

t of s

erum

AFU

, AFP

, or b

oth,

in th

e di

agno

sis

of N

BNC-

HCC

     Test

     Valid

atio

n

AUC

 Sen

sitiv

ity S

peci

ficity

 PPV

 NPV

 Pos

itive

 Neg

ativ

e P

AUC

 Sen

sitiv

ity S

peci

ficity

 PPV

 NPV

 Pos

itive

 Neg

ativ

e P

(95%

CI)

 (%

) (

%)

 (%

) (

%)

 LR

  LR

 val

ue(9

5% C

I) (

%)

 (%

) (

%)

 (%

) L

R 

LR v

alue

NBN

C-H

CC v

s. H

C (re

sults

for m

easu

rem

ent o

f AFU

, AFP

, or b

oth

in th

e di

agno

sis

of N

BNC-

HCC

)

AFP

 0.7

92 (0

.729

–0.8

45) 

59.3

% 9

8.9%

 88.

9% 9

4.0%

 51.

85 0

.41

 <0.

001

 0.7

07 (0

.639

–0.7

69) 

51.9

% 9

7.7%

 77.

8% 9

2.8%

 22.

25 0

.49

 0.0

02

AFU

 0.9

67 (0

.932

–0.9

87) 

85.2

% 9

8.9%

 92.

0% 9

7.7%

 74.

54 0

.15

 <0.

001

 0.9

48 (0

.907

–0.9

74) 

74.1

% 9

6.5%

 76.

9% 9

6.0%

 21.

23 0

.27

 <0.

001

AFP

+ A

FU 0

.986

(0.9

58–0

.997

) 92

.6%

 98.

9% 9

2.6%

 98.

9% 8

1.02

 0.0

75 <

0.00

1 0.

969

(0.9

34–0

.988

) 88

.9%

 94.

8% 7

2.7%

 98.

2% 1

6.99

 0.1

2 <

0.00

1

The

diag

nost

ic c

utof

f val

ues

of s

erum

AFP

and

AFU

wer

e 43

.23

ng/m

L an

d 16

.75

mU

/mL,

resp

ectiv

ely.

Page 8: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 263

respectively, then based on the nomogram model, the prob-

ability of this individual developing HBV-HCC and HCV-

HCC was nearly 75%.

Overall, the AFP/AFU panel improved the accuracy for

diagnosing all-stage and early-stage hepatitis-related HCC

compared to any other single marker. Moreover, the inclusion

of demographic characteristics assisted in the detection of

disease.

The AFP/AFU combination was effective in predicting the survival of HCC patients

We evaluated the AFU levels in predicting HCC patient prog-

noses based on a KM plotter database. The results showed that

patients with low expression of AFU might have better prog-

noses (Supplementary Figure S7A and B). Thus, we assessed

the value of the AFP/AFU combination in forecasting survival

of HCC patients. The 5-year overall/DFS of HCC patients

with low expression of the AFP/AFU combination was almost

60% and 40%, respectively, while the survival of patients with

high expression was approximately 40% and 25%, respec-

tively (Supplementary Figure S7C and D). Overall, the results

showed that the AFP/AFU combination was effective in pre-

dicting HCC prognosis.

We also verified the results of the KM plotter based on our

IHC data. First, we found that patients with high AFU levels

had worse prognoses (Supplementary Figure S7E and F). In

addition, the IHC results of the AFP/AFU combination in pre-

dicting HCC prognoses were consistent with those in the KM

plotter database (Supplementary Figure S7G and H). Thus,

the AFP and AFU panel was effective in predicting the survival

of HCC patients.

00

Points

AFP (ng/mL)

AFU (mU/mL)

Total points

Probability of HCC

0.2 0.4 0.6

1-specificity

0.001

0

0

0

0 10 20 30 40 50 60 70 80 90 100

20 40 60 80 100 120 140 160 180

5 10 15 20 25 30 ≥35

≥200

20 40 60 80 100 120 140 160 180 200

0.01 0.1 0.4 0.8 0.95 0.999

Nomogram-NBNC-HCC vs. HC

Sens

itivi

ty

Sens

itivi

ty

NBNC-HCC vs. HC (test) NBNC-HCC vs. HC (validation)

0.8 1.0 0 0.2 0.4 0.6

1-specificity

0.8 1.0

AFP + AFU

AFP

AFU

AFP + AFU

AFP

AFU

0.2

0.4

0.6

0.8

1.0

A

C

B

0

0.2

0.4

0.6

0.8

1.0

Figure 3 Diagnostic outcomes and nomograms for the combination of serum AFP and AFU in the diagnosis of NBNC-HCC. (A). Receiver operating characteristic curves (ROCs) for AFU, AFP, or both for all patients with NBNC-HCC vs. HC in the test cohort. (B). ROC curves for AFU, AFP, or both for all patients with NBNC-HCC vs. HC in the validation cohort. (C). Nomogram of the combined AFP/AFU in diagnosing NBNC-HCC.

Page 9: Diagnostic value of 5 serum biomarkers for hepatocellular

264 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Discussion

There is a consensus that early diagnosis is the key to improv-

ing the survival of HCC patients4. Several preliminary studies

have suggested that serum biomarkers, including AFP, AFU,

GGT-II, HGF, and GPC3, may be used for the diagnosis of

HCC19-22. However, these markers are not currently included

in routine clinical assessments because of the lack of large-

scale, multicenter clinical investigations.

Over the past 2 decades, infection with hepatitis B virus

(HBV) or hepatitis C virus (HCV) has been associated with

approximately 85% of worldwide HCC32. Due to the promotion

of antiviral therapy, the number of patients with other causes of

HCC (hepatitis B virus surface antigen-negative and hepatitis

0 0.2 0.4

AUC = 0.78095% CI (0.725–0.828)

AUC = 0.54795% CI (0.485–0.608)

AUC = 0.83595% CI (0.784–0.877)

AUC = 0.83695% CI (0.786–0.878)

AUC = 0.76195% CI (0.705–0.811)

AUC = 0.73595% CI (0.678–0.787)

AUC = 0.83695% CI (0.786–0.879)

AUC = 0.75295% CI (0.696–0.803)

AUC = 0.52095% CI (0.458–0.581)

1-speci�city

1-speci�city

1-speci�city 1-speci�city

Sens

itivi

ty

Sens

itivi

ty

AFP

GGT-II HGF AFP + AFU + HGF

AFU + HGF

AFU GPC3

0.6 0.8 1.0

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0Se

nsiti

vity

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0Se

nsiti

vity

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

A

D

G

E

H I

B C

F

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

AFP + HGF AFP + AFU

Figure 4 The receiver operating characteristic curves of AFP (A), AFU (B), GPC3 (C), GGT-II (D), and HGF (E), AFP + AFU + HGF (F), AFP + AFU (G), AFP + HGF (H), AFU + HGF (I) in the detection of all-stage HBV-HCC and HCV-HCC of the test group. The sensitivity and specificity repre-sented by the red dots are shown in detail (lower). (A). AFP sensitivity: 52.8% and specificity: 93.7%; (B). AFU sensitivity: 71.5% and specificity: 67.1%; (C). GPC3 sensitivity: 91.1% and specificity: 25.9%; (D). GGT-II sensitivity: 73.2% and specificity: 38.5%; (E). HGF sensitivity: 61.8% and specificity: 75.5%; (F). AFP + AFU + HGF sensitivity: 65.9% and specificity: 89.5%; (G). AFP + AFU sensitivity: 69.1% and specificity: 87.4%; (H). AFP + HGF sensitivity: 74.8% and specificity: 79.0%; (I). AFU + HGF sensitivity: 63.4% and specificity: 76.9%.

Page 10: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 265

C virus antibody-negative or NBNC-HCC) is increasing8,11. In

our study of 401 subjects (202 in the test cohort and 199 in

the validation cohort), the levels of all 5 markers were signifi-

cantly higher in NBNC-HCC patients than in healthy controls.

We therefore further studied the diagnostic capabilities of these

5 markers for NBNC-HCC. It is worth mentioning that the

healthy controls in this study only referred to individuals who

had not been infected with HBV or HCV. The healthy controls

may have suffered from alcohol-related liver disease, nonalco-

holic steatohepatitis, or aflatoxin exposure33. The combination

of AFP and AFU was uniquely associated with the progres-

sion of NBNC-HCC (HC to NBNC-HCC). This combination

showed promising characteristics as a diagnostic marker for

NBNC-HCC. Their diagnostic capability outperformed that of

AUC = 0.74195% CI (0.675–0.800)

AUC = 0.51095% CI (0.440–0.581)

AUC = 0.77695% CI (0.712–0.831)

AUC = 0.77495% CI (0.710–0.829) AUC = 0.666

95% CI (0.597–0.730)

AUC = 0.66595% CI (0.596–0.730)

AUC = 0.77095% CI (0.706–0.826)

AUC = 0.66695% CI (0.597–0.730)

AUC = 0.51795% CI (0.447–0.588)

1-speci�city

1-speci�city

1-speci�city 1-speci�city

Sens

itivi

ty

Sens

itivi

ty

AFP

GGT-II HGF AFP + AFU + HGF

AFU + HGF

AFU GPC3

0 0.2 0.4 0.6 0.8 1.0

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

1-speci�city

0 0.2 0.4 0.6 0.8 1.0

0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0Se

nsiti

vity

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

A

D

G

E

H I

B C

F

0.2

0

0.4

0.6

0.8

1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

AFP + HGF AFP + AFU

Figure 5 The receiver operating characteristic curves of AFP (A), AFU (B), GPC3 (C), GGT-II (D), and HGF (E), AFP + AFU + HGF (F), AFP + AFU (G), AFP + HGF (H), and AFU + HGF (I) in the detection of early-stage HBV-HCC and HCV-HCC of the test group. The sensitivity and specificity represented by the red dots are shown in detail (lower). (A). AFP sensitivity: 44.3% and specificity: 93.7%; (B). AFU sensitivity: 63.9% and spec-ificity: 67.1%; (C). GPC3 sensitivity: 86.9% and specificity: 28.0%; (D). GGT-II sensitivity: 96.7% and specificity: 11.9%; (E). HGF sensitivity: 50.8% and specificity: 75.5%; (F). AFP + AFU + HGF sensitivity: 52.5% and specificity: 90.2%; (G). AFP + AFU sensitivity: 52.5% and specificity: 91.6%; (H). AFP + HGF sensitivity: 50.8% and specificity: 90.9%; (I). AFU + HGF sensitivity: 34.4% and specificity: 93.0%.

Page 11: Diagnostic value of 5 serum biomarkers for hepatocellular

266 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

any other serum marker in this study (AUC: 0.986, 95% CI:

0.958–0.997, sensitivity: 92.6%, specificity: 98.9% in the test

cohort; AUC: 0.969, 95% CI: 0.934–0.988, sensitivity: 88.9%,

specificity: 94.8% in the validation cohort). Considering vari-

ous factors, such as the incidence of NBNC-HCC, our study is

the first large-scale, retrospective analysis of serum biomarkers

in NBNC-HCC patients.

In China, the incidence and mortality of hepatitis-related

HCC is still high34. The HBV-HCC and HCV-HCC patient

median plasma levels of AFP, AFU, and HGF were found to

be significantly higher than those of CH and LC patients.

We showed that the rise of these 3 serum biomarkers may be

related to the occurrence of HBV-HCC and HCV-HCC. Thus,

we paid particular attention to these 3 serum markers for dif-

ferentiating HBV-HCC and HCV-HCC patients from at-risk

(CH and LC) patients. This differentiation has also been the

focus of current research worldwide35. In our study, AFU

showed promising accuracy in identifying HBV-HCC and

HCV-HCC patients from the at-risk population. We found

that the combination of AFP and AFU uniquely reflected the

progression of HBV-HCC and HCV-HCC (CH to LC to HBV-

HCC and HCV-HCC). For all-stage hepatitis-related HCC

vs. CH and LC, the ROC curves showed that the AFP/AFU

combination had an AUC of 0.835 (95% CI: 0.784–0.877), a

sensitivity of 69.1%, and a specificity of 87.4%. Our results

are comparable with other promising markers, especially in

terms of diagnostic sensitivity (e.g., DKK1: 74.8% vs. 69.1%

in all-stage detection)12. Similar results were also shown in

early-stage HBV-HCC and HCV-HCC (AUC: 0.776, 95%

CI: 0.712–0.831, sensitivity: 52.5%, specificity: 91.6%). Most

importantly, the AFP/AFU panel improved the diagnostic sen-

sitivity in the absence of a loss of specificity in the detection

of HBV-HCC and HCV-HCC. Notably, this strategy showed

an advantage for using an AFP/AFU panel. Our findings

are consistent with the results of basic and clinical research

studies23,36,37. AFU was also considered to be a prognostic and

disease recurrence marker and has been shown to be associ-

ated with metastasis and reduced overall survival38.

Zhang et al.39 assessed the diagnostic value for HCC in com-

bination with AFU, AFP, and TK1. They enrolled participants

including 116 patients with HCC, 109 patients with benign

hepatic diseases (such as hepatitis and liver cirrhosis), and 104

normal subjects. The results showed that the AUC was 0.718

for AFU, 0.832 for AFP, 0.773 for TK1, and 0.900 for the com-

bination of these markers. The results were similar to our data

in the detection of HBV-HCC and HCV-HCC (0.780 for AFP, Tabl

e 2

Resu

lts fo

r mea

sure

men

t of s

erum

AFU

, AFP

, or b

oth,

in th

e di

agno

sis

of H

BV-H

CC a

nd H

CV-H

CC

     Test

 Val

idat

ion

AUC

 Sen

sitiv

ity S

peci

ficity

 PPV

 NPV

 Pos

itive

 Neg

ativ

e P

   AUC

 Sen

sitiv

ity S

peci

ficity

 PPV

 NPV

 Pos

itive

 Neg

ativ

e P

(95%

CI)

 (%

) (

%)

 (%

) (

%)

 LR

  LR

 val

ue(9

5% C

I) (

%)

 (%

) (

%)

 (%

) L

R 

LR v

alue

Hep

atiti

s-H

CC v

s. CH

and

LC

(resu

lts fo

r the

mea

sure

men

t of A

FU, A

FP, o

r bot

h in

dia

gnos

is o

f hep

atiti

s-H

CC)

AFP

 0.7

80 (0

.725

–0.8

28) 

52.8

% 9

3.7%

 87.

8% 6

9.8%

 8.4

0 0

.50

 <0.

001 

0.80

9 (0

.755

–0.8

55) 

62.8

% 9

0.2%

 85.

4% 7

2.7%

 6.4

1 0

.41

 <0.

001

AFU

 0.7

52 (0

.696

–0.8

03) 

71.5

% 6

7.1%

 65.

2% 7

3.3%

 2.1

8 0

.42

 <0.

001 

0.72

7 (0

.668

–0.7

81) 

69.4

% 6

5.4%

 64.

6% 7

0.2%

 2.0

0 0

.47

 <0.

001

AFP

+ A

FU 0

.835

(0.7

84–0

.877

) 69

.1%

 87.

4% 8

2.5%

 76.

7% 5

.49

 0.3

5 <

0.00

1 0.

841

(0.7

90–0

.884

) 71

.9%

 86.

5% 8

2.9%

 77.

2% 5

.31

 0.3

2 <

0.00

1

Early

hep

atiti

s-H

CC v

s. CH

and

LC

(resu

lts fo

r mea

sure

men

t of A

FU, A

FP, o

r bot

h in

dia

gnos

is o

f ear

ly h

epat

itis-

HCC

)

AFP

 0.7

41 (0

.675

–0.8

00) 

44.3

% 9

3.7%

 75.

0% 7

9.8%

 7.0

3 0

.59

 <0.

001 

0.75

8 (0

.693

–0.8

16) 

52.2

% 9

0.2%

 73.

5% 7

8.4%

 5.3

3 0

.53

 <0.

001

AFU

 0.6

66 (0

.597

–0.7

30) 

63.9

% 6

7.1%

 45.

3% 8

1.4%

 1.9

4 0

.54

 <0.

001 

0.67

1 (0

.602

–0.7

36) 

56.5

% 6

5.4%

 45.

9% 7

4.4%

 1.6

3 0

.67

 <0.

001

AFP

+ A

FU 0

.776

(0.7

12–0

.831

) 52

.5%

 91.

6% 7

2.7%

 81.

9% 6

.25

 0.5

2 <

0.00

1 0.

791

(0.7

28–0

.845

) 75

.4%

 73.

7% 5

9.8%

 85.

2% 2

.86

 0.3

3 <

0.00

1

The

diag

nost

ic c

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f val

ues

of s

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AFP

and

AFU

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e 42

.34

ng/m

L an

d 13

.94

mU

/mL,

resp

ectiv

ely.

Page 12: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 267

00 0.2

HBV- and HCV-HCC vs. CH + LC (test) HBV- and HCV-HCC vs. CH + LC (validation)

Early HBV- and HCV-HCC vs. CH + LC (test)

Nomogram HBV- and HCV-HCC vs. CH and LC

Early HBV- and HCV-HCC vs. CH + LC (validation)

AFP + AFU

AFP

AFU

AFP + AFU

AFP

AFU

AFP + AFU

AFP

AFU

AFP + AFU

AFP

AFU

0.4 0.6

1-specificity

Sens

itivi

ty

Sens

itivi

ty

0.8 1.0

0 0.2 0.4 0.6

1-specificity

0.8 1.0 0 0.2 0.4 0.6

1-specificity

0.8 1.0

0 0.2 0.4 0.6

1-specificity

0.8 1.0

0.2

0.4

0.6

0.8

1.0

A

C

E

D

B

0

Sens

itivi

ty

0.2

0.4

Points

AFP (ng/mL)

AFU (mU/mL)

Total points

Probability of HCC0.1

0 20 40 60 80 100 120 140 160 180

0 10 20 30 40 50 60 70 80 90 100

0 20 40 60 80 100 120 140 160 180

0 5 10 15 20 25 30 ≥.35

≥200

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95

0.6

0.8

1.0

0

Sens

itivi

ty

0.2

0.4

0.6

0.8

1.0

0

0.2

0.4

0.6

0.8

1.0

Figure 6 Diagnostic outcomes and nomogram for the combination of serum AFP and AFU of all-stage and early stage hepatitis-related hepatocellular carcinoma (HCC). (A). Receiver operating characteristic curves (ROCs) for AFU, AFP, or both for all patients with all-stage HBV-HCC and HCV-HCC vs. CH and LC in the test cohort. (B). ROC curves for AFU, AFP, or both for all patients with all-stage HBV-HCC and HCV-HCC vs. CH and LC in the validation cohort. (C). ROC curves for AFU, AFP, or both for all patients with early-stage HBV-HCC and HCV-HCC vs. CH and LC in the test cohort. (D). ROC curves for AFU, AFP, or both for all patients with early-stage HBV-HCC and HCV-HCC vs. CH and LC in the validation cohort. (E). Nomogram of the combined AFP/AFU in diagnosing HBV-HCC and HCV-HCC.

Page 13: Diagnostic value of 5 serum biomarkers for hepatocellular

268 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

0.752 for AFU, and 0.835 for the combination). In addition,

we showed that the AFP/AFU combination was effective in

detecting NBNC-HCC patients. Zhu et al.40 found that the

AUCs were 0.80, 0.80, and 0.87 for serum AFU, 5′-NT, and

AFP, respectively. The correlation of AFU and AFP was sig-

nificant. However, they did not identify the combination of

these markers. In addition, the number of participants was too

low (36 for HCC and 36 for healthy controls). Xing et al.24

reported that a combination of AFU and AFP (AUC: 0.582)

did not improve the diagnostic efficacy compared with AFP

(AUC: 0.764) alone for HCC patients. They showed that the

majority of HCC patients (85.5%) had chronic HBV and

only 13 patients (6.9%) had chronic HCV, so there were some

NBNC-HCC patients (7.6%) who were enrolled in the HCC

cohort. Based on the etiology of HCC, patients with hepati-

tis do not progress to NBNC-HCC. This part of NBNC-HCC

patients might therefore cause bias in the results. However,

patients with benign disease would not evolve to HBV or

HCV-related HCC. This phenomenon might lead to a low

AUC of AFU and its combination. We enrolled patients with

hepatitis or liver cirrhosis as controls of hepatitis-related HCC

patients. In addition, healthy controls were used for compari-

son with NBNC-HCC patients. Thus, the results regarding the

AUC of the AFP/AFU combination in our study were more

convincing.

Conclusions

To the best of our knowledge, this is the first report show-

ing the potential of AFU in diagnosing NBNC-HCC and

hepatitis-related HCC, based on a study with a large sample

size and independent validation. Wang et al.21 reported that

preoperative serum AFU is a prognostic predictor of HCC

based on survival prognosis data. We showed that AFU was

a promising diagnostic marker for NBNC-HCC and hepa-

titis-related HCC, with a high degree of accuracy and clini-

cally applicable cut-off concentrations; AFU could also serve

as a reliable second-line marker for the detection of HCC.

The AFP/AFU panel had a high degree of accuracy for dif-

ferentiating NBNC-HCC from healthy controls and hepati-

tis-related HCC in patients at risk for developing HCC. The

assays, which are easy to perform and cost effective, can be

translated into a standard protocol for the clinical diagnosis

of HCC, which may identify asymptomatic patients early for

curative treatments. We are currently conducting a prospec-

tive study to confirm the present findings and to determine

the potential utility of measuring AFP/AFU levels to moni-

tor therapeutic responses, and for the prognostic diagnosis

of HCC.

Grant support

This work was supported by the National Natural Science

Foundation of China (Grant Nos. 81972656 and 31671421),

the Key Project of Tianjin Natural Science Foundation (Grant

No. 18JCZDJC35200), the State Key Project on Infectious

Diseases of China (Grant No. 2018ZX10723204), and the

National 135 Major Project of China (2018ZX10302205).

Conflict of interest statement

No potential conflicts of interest are disclosed.

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Cancer Biol Med Vol 18, No 1 February 2021 1

Supplementary materials

Table S1a The information of 347 healthy controls (test group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

2   0.000   6.127   515.942   0.285   0.390   Female   43

4   0.000   8.380   425.294   0.000   0.338   Female   37

5   0.000   6.177   504.611   0.000   0.292   Male   33

6   0.000   11.423   512.364   0.000   0.334   Female   31

8   0.000   3.335   470.021   0.000   0.253   Female   27

9   5.057   7.472   175.415   0.000   0.395   Female   45

14   0.000   10.465   345.976   1.373   0.296   Female   31

18   1.253   9.153   315.562   0.000   0.364   Female   24

19   0.000   3.201   394.879   0.000   0.235   Female   30

20   0.000   10.633   721.689   0.000   0.372   Male   68

24   0.000   13.592   501.033   0.000   0.500   Male   45

25   10.323   4.950   337.031   0.000   0.429   Female   25

27   25.244   11.171   437.221   0.000   0.271   Female   25

28   0.000   5.151   438.414   0.000   0.262   Female   34

30   11.786   5.017   353.133   0.000   0.346   Female   27

33   0.000   5.026   573.241   0.000   0.454   Male   40

34   0.000   1.719   531.221   0.000   0.307   Female   24

38   0.000   3.587   869.350   0.000   0.245   Female   26

39   8.157   3.548   888.569   0.000   0.280   Female   48

41   4.650   5.551   611.978   0.000   0.571   Female   25

43   0.000   8.255   737.381   0.000   0.417   Female   24

44   0.000   8.877   947.723   0.000   0.394   Female   25

46   0.000   6.757   1,483.200   0.000   0.351   Male   43

47   0.000   8.138   704.553   0.000   0.330   Female   29

48   0.000   8.955   826.017   0.000   0.635   Female   28

51   3.375   7.360   741.732   0.000   0.153   Male   28

52   0.000   8.177   857.532   0.000   0.209   Female   35

54   0.000   4.929   1,234.749   12.793   0.173   Female   23

55   0.000   6.504   1,814.282   0.000   0.130   Male   32

56   0.000   7.127   855.562   0.000   0.234   Female   29

60   2.418   5.882   867.380   0.000   0.212   Female   26

61   0.000   8.994   833.239   0.000   0.184   Female   28

63   21.864   9.675   1,582.157   0.000   0.199   Male   37

64   0.000   3.606   1,368.139   0.000   0.240   Female   26

Page 17: Diagnostic value of 5 serum biomarkers for hepatocellular

2 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

68   0.000   4.326   824.047   0.000   0.229   Female   41

71   0.000   4.442   711.119   0.000   0.210   Female   30

72   0.825   5.609   827.330   0.000   0.193   Female   27

73   13.275   8.540   548.900   0.558   0.211   Male   26

78   19.292   2.717   530.420   0.000   0.222   Female   29

80   6.829   0.000   290.177   0.000   0.232   Female   31

81   24.449   9.319   397.664   0.156   0.220   Male   48

83   12.416   15.598   513.448   1.906   0.368   Male   54

84   3.391   4.349   407.093   0.558   0.172   Female   24

85   4.680   13.466   350.144   0.582   0.383   Female   33

86   39.062   16.186   372.018   0.000   0.316   Male   42

87   10.267   7.614   263.400   0.000   0.275   Female   29

88   20.581   4.143   443.299   1.078   0.164   Male   33

92   2.961   9.510   579.072   0.440   0.191   Female   25

93   13.705   6.026   434.248   0.000   0.155   Female   33

95   16.284   15.406   642.433   0.535   0.270   Male   32

96   30.466   6.746   568.889   0.000   0.186   Female   28

98   8.978   2.908   457.631   0.000   0.598   Female   26

101   4.250   3.879   235.491   0.000   0.412   Female   48

103   18.862   4.746   543.997   0.000   0.477   Male   26

105   8.548   1.100   491.197   0.000   0.384   Female   69

106   12.846   4.820   422.556   0.000   0.405   Male   83

111   4.250   2.776   375.790   0.416   0.416   Female   58

112   11.127   2.306   257.743   2.426   0.472   Female   63

116   0.000   3.031   1,194.775   0.000   0.414   Female   56

118   11.324   12.467   502.778   0.000   0.538   Male   68

119   0.000   3.672   415.533   0.000   0.357   Male   51

121   0.000   2.454   681.926   0.000   0.594   Female   66

122   0.000   1.589   601.881   0.000   0.441   Female   56

124   0.000   3.367   831.427   0.000   0.471   Female   64

125   3.074   3.928   760.276   0.000   0.379   Male   64

128   16.365   2.021   1,183.854   0.000   0.519   Female   59

129   0.000   3.095   567.576   0.000   0.741   Male   62

131   18.657   2.822   615.010   0.000   0.371   Female   65

132   0.000   4.697   738.253   0.133   0.450   Female   57

Table S1a (continued)

Page 18: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 3

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

135   1.241   3.127   456.614   0.000   0.386   Female   42

138   0.000   5.081   742.912   0.000   0.565   Female   63

141   0.000   2.614   744.183   0.000   0.385   Female   59

142   0.000   4.489   895.802   0.000   0.496   Female   58

145   0.000   5.081   902.313   0.000   0.167   Male   75

146   0.000   0.515   842.015   0.000   0.162   Female   62

147   20.032   3.287   602.728   0.000   0.236   Male   63

151   5.824   2.117   534.965   0.000   0.119   Female   25

155   0.000   1.486   412.283   0.000   0.222   Female   68

158   0.000   1.612   361.943   0.000   0.105   Male   19

159   0.000   1.517   331.942   0.000   0.137   Female   59

161   0.000   1.722   417.368   0.000   0.171   Female   63

162   0.000   5.505   490.590   0.000   0.179   Male   72

163   0.000   4.307   643.645   0.000   0.206   Female   73

164   0.000   5.378   621.780   0.000   0.178   Female   51

165   0.000   2.825   497.709   0.000   0.172   Female   61

166   0.000   6.387   460.589   0.000   0.188   Female   63

170   0.000   2.132   327.366   0.000   0.203   Male   67

173   0.000   5.410   440.758   0.000   0.169   Male   79

174   0.000   5.142   360.926   0.000   0.227   Female   69

182   0.000   0.000   250.075   0.000   0.149   Male   79

183   0.000   4.795   178.887   0.000   0.159   Female   61

184   0.000   3.172   329.399   0.421   0.166   Male   62

185   0.000   0.000   485.505   0.000   0.151   Female   58

186   0.000   5.898   345.671   0.000   0.192   Female   65

191   0.000   1.990   276.517   0.356   0.259   Female   69

193   0.000   7.058   733.206   0.000   0.511   Female   60

196   0.000   5.215   1,042.845   0.000   0.763   Female   70

200   5.258   9.515   458.420   0.000   0.650   Female   60

201   0.000   6.414   703.338   0.000   0.681   Male   68

202   0.000   5.858   624.828   0.000   0.581   Male   72

203   0.000   9.691   641.042   0.000   0.654   Female   77

207   0.000   6.999   6,310.173   0.184   0.489   Female   64

209   0.000   5.420   984.543   0.000   0.853   Female   61

212   0.000   6.034   910.708   0.000   0.506   Male   75

214   0.000   9.164   767.341   0.000   0.534   Male   85

Table S1a (continued)

Page 19: Diagnostic value of 5 serum biomarkers for hepatocellular

4 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

216   0.000   9.077   940.576   0.000   0.421   Male   74

217   31.529   4.366   2,609.853   0.000   0.782   Female   68

218   3.798   4.922   709.312   0.000   0.591   Female   64

220   0.000   3.284   633.361   0.000   0.458   Female   64

221   0.000   5.039   699.071   0.000   0.451   Female   50

222   0.000   5.478   839.024   0.000   0.471   Female   76

223   0.000   10.686   840.731   0.000   0.484   Male   40

224   7.204   6.882   751.980   0.000   0.433   Male   71

225   17.907   2.845   593.253   0.000   0.719   Male   70

228   9.150   8.608   752.834   0.000   0.601   Female   67

229   0.393   8.433   623.974   0.000   0.487   Male   68

234   0.000   8.158   373.547   0.000   0.499   Male   55

236   7.064   7.813   352.357   0.000   0.546   Female   57

237   0.000   11.062   563.081   0.000   0.787   Female   58

238   7.972   5.209   406.510   0.000   0.477   Female   63

239   0.707   8.366   703.171   0.000   0.671   Female   62

240   7.518   1.844   332.344   0.000   0.536   Male   66

241   12.059   10.785   591.334   0.000   0.757   Female   74

243   22.502   16.753   525.410   0.000   0.576   Male   75

246   4.340   12.744   697.285   0.000   0.791   Female   62

248   8.880   4.633   592.512   0.000   0.587   Female   65

249   9.789   12.905   467.726   0.000   0.936   Female   66

250   3.886   16.247   860.920   0.000   0.974   Male   55

251   12.513   7.767   531.296   0.000   0.688   Male   52

257   1.162   17.952   840.907   9.686   0.892   Male   50

258   1.162   15.325   651.373   15.446   0.951   Male   45

259   7.972   13.043   770.273   4.281   0.857   Male   59

261   0.000   14.080   767.919   5.973   0.711   Male   52

263   0.000   12.537   943.528   5.673   0.798   Male   58

265   26.588   17.952   544.245   14.354   1.176   Male   52

266   7.518   10.209   716.121   9.823   0.819   Male   47

267   7.064   14.380   777.447   29.521   0.707   Male   41

270   0.000   14.703   707.880   15.638   0.489   Male   50

274   26.315   9.557   394.531   0.000   0.855   Male   45

275   0.000   1.454   570.850   0.000   0.747   Female   41

277   5.034   0.968   431.558   0.000   0.527   Male   60

Table S1a (continued)

Page 20: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 5

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

278   20.313   3.443   406.874   40.221   0.689   Female   30

279   8.308   4.226   376.018   152.273   0.504   Female   30

285   7.217   5.939   1,741.841   58.902   0.617   Male   44

287   5.580   1.750   491.506   61.529   0.627   Male   28

289   6.671   1.708   577.902   55.979   0.221   Female   39

291   13.765   8.245   596.416   8.754   0.287   Female   44

292   8.308   7.209   469.467   32.677   0.376   Female   31

293   5.580   9.218   560.271   16.261   0.377   Male   26

298   31.772   4.204   515.309   42.915   0.443   Male   62

302   2.306   9.642   555.863   17.633   0.490   Male   56

303   14.856   8.076   372.492   2.366   0.457   Female   35

304   14.311   10.297   228.792   24.291   0.482   Male   51

306   4.489   7.272   632.561   27.777   0.465   Male   27

308   8.308   7.949   423.624   2.727   0.408   Male   30

310   0.000   12.455   507.375   6.372   0.451   Male   33

312   43.231   4.310   207.634   32.631   0.348   Male   54

314   0.000   2.864   352.573   25.491   0.302   Male   27

317   0.000   7.899   2,416.889   23.458   0.438   Male   31

320   0.000   7.899   674.299   23.967   0.650   Female   31

323   67.991   9.235   761.287   18.944   0.313   Female   62

324   0.000   7.248   773.440   10.672   0.305   Female   65

326   0.000   2.916   474.100   69.076   0.517   Female   30

330   0.000   2.881   797.745   14.659   0.307   Male   68

331   0.000   7.847   1,419.580   51.709   0.288   Male   40

332   0.000   6.974   827.807   22.966   0.459   Female   40

334   0.000   4.851   731.865   51.983   0.458   Female   33

335   0.000   3.875   764.485   36.921   0.471   Female   57

337   56.645   5.621   495.847   23.091   0.343   Female   70

339   0.000   6.152   702.602   23.722   0.319   Female   62

340   0.000   5.981   511.198   53.962   0.379   Female   43

341   0.000   3.977   564.286   1.438   0.258   Female   38

342   0.000   12.968   739.540   169.094   0.338   Male   41

343   0.000   3.412   685.173   49.386   0.359   Male   38

345   0.000   7.625   473.461   24.516   0.314   Male   58

Table S1a (continued)

Page 21: Diagnostic value of 5 serum biomarkers for hepatocellular

6 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S1b The information of 347 healthy controls (validation group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

1   0.000   2.209   322.718   0.000   0.358   Female   24

3   0.000   6.362   502.822   0.000   0.263   Female   27

7   10.323   11.305   423.504   0.000   0.302   Female   42

10   0.000   7.001   512.960   0.000   0.424   Female   27

11   0.000   9.304   442.588   0.000   0.457   Male   52

12   0.000   10.196   523.695   0.000   0.347   Female   30

13   0.000   9.019   337.627   0.984   0.261   Female   24

15   0.000   5.219   567.230   0.000   0.310   Female   28

16   0.000   4.058   552.917   0.000   0.242   Female   26

17   36.947   2.579   279.779   0.000   0.307   Female   31

21   7.105   15.711   738.984   0.000   0.472   Male   54

22   12.956   3.100   246.383   0.000   0.236   Female   28

23   0.000   7.690   569.019   0.285   0.404   Female   55

26   12.371   5.958   384.144   0.000   0.314   Male   57

29   0.000   5.605   224.913   0.000   0.258   Female   31

31   55.964   10.212   383.548   0.000   0.222   Female   31

32   12.078   4.428   319.736   0.000   0.296   Female   48

35   0.000   5.357   494.454   0.000   0.353   Female   23

36   0.000   7.379   837.835   0.000   0.341   Female   24

37   35.572   8.099   622.483   0.000   0.382   Female   28

40   0.000   2.322   728.189   0.000   0.194   Female   26

42   0.000   5.357   1,445.981   0.000   0.459   Female   32

45   0.000   6.932   834.552   0.000   0.363   Female   35

49   34.616   4.870   803.037   0.000   0.189   Male   37

50   14.851   5.240   1,399.506   0.000   0.232   Male   28

53   0.000   9.519   726.689   0.000   0.256   Male   50

57   11.663   8.410   847.027   0.000   0.349   Male   45

58   0.000   3.840   742.634   0.000   0.166   Female   31

59   4.331   10.919   785.967   0.000   0.229   Female   27

62   0.000   5.901   1,380.162   0.000   0.228   Male   54

65   18.995   3.275   606.069   0.000   0.167   Female   35

66   9.750   2.206   795.158   0.000   0.211   Male   40

67   0.000   5.473   828.643   0.000   0.188   Male   43

69   0.000   6.115   908.743   0.000   0.223   Female   27

Page 22: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 7

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

70   0.000   11.950   857.532   0.000   0.271   Female   41

74   27.458   13.348   402.567   0.464   0.305   Female   43

75   4.250   4.937   451.973   0.000   0.117   Female   25

76   8.978   1.350   501.380   0.000   0.163   Female   42

77   19.292   1.247   411.619   0.000   0.129   Female   25

79   14.565   2.379   329.401   0.298   0.211   Male   31

82   5.110   8.996   618.295   0.133   0.200   Female   27

89   5.110   5.908   467.436   1.409   0.168   Female   56

90   0.000   7.863   364.852   0.298   0.221   Male   51

91   3.820   12.451   308.658   0.000   0.288   Female   30

94   4.680   19.200   454.613   0.606   0.389   Female   29

97   5.539   9.510   387.104   0.984   0.599   Male   27

99   5.969   11.745   387.858   0.653   0.746   Male   80

100   3.391   7.319   455.745   0.000   0.538   Female   41

102   5.539   3.291   516.088   0.000   0.479   Male   67

104   22.301   2.320   387.481   0.000   0.406   Female   62

107   6.829   6.820   469.322   0.000   0.501   Female   69

108   9.407   2.453   535.323   0.000   0.441   Female   77

109   16.284   2.350   597.929   0.000   0.413   Male   77

110   11.127   0.615   424.442   0.000   0.440   Male   63

113   0.000   2.406   407.063   0.000   0.471   Female   47

114   0.000   4.425   692.090   0.000   0.575   Female   68

115   0.000   2.854   586.211   0.000   0.371   Female   58

117   0.000   5.514   565.458   0.000   0.429   Female   75

120   7.657   1.525   509.977   0.000   0.435   Female   70

123   0.000   3.415   526.918   0.000   0.488   Female   80

126   3.532   5.049   533.694   0.000   0.498   Female   55

127   3.532   4.681   598.493   0.000   0.379   Male   63

130   0.000   1.044   731.901   0.000   0.449   Female   64

133   0.000   3.736   690.819   0.000   0.376   Female   59

134   0.000   7.292   529.459   0.000   0.384   Female   74

136   36.990   4.761   483.719   0.026   0.386   Male   43

137   3.991   4.809   745.030   0.000   0.626   Female   84

139   0.000   6.027   621.363   0.000   0.456   Female   63

140   0.000   3.015   576.470   0.000   0.487   Female   71

Table S1b (continued)

Page 23: Diagnostic value of 5 serum biomarkers for hepatocellular

8 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

143   0.000   5.658   537.930   0.000   0.462   Female   58

144   0.000   2.983   644.656   0.000   0.522   Female   80

148   0.000   0.000   566.305   0.000   0.171   Female   63

149   1.699   4.232   3,051.854   0.000   0.332   Female   75

150   0.000   2.630   472.284   0.000   0.203   Male   68

152   24.157   2.390   582.822   0.000   0.316   Female   62

153   8.780   1.722   442.792   0.000   0.153   Female   58

154   0.000   1.439   309.568   0.000   0.172   Male   48

156   47.907   5.962   457.030   0.726   0.178   Female   63

157   0.000   2.037   456.521   0.639   0.159   Female   61

160   0.000   2.274   486.014   0.000   0.170   Female   69

167   0.000   10.280   643.137   0.000   0.192   Female   51

168   0.000   12.108   516.523   0.465   0.208   Male   58

169   0.000   4.055   626.356   0.000   0.276   Male   80

171   0.000   2.967   467.200   0.000   0.150   Male   73

172   0.000   4.086   736.698   0.182   0.135   Female   59

175   0.000   19.168   222.109   0.508   0.366   Male   77

176   0.000   3.078   316.179   0.030   0.147   Male   56

177   33.392   3.802   482.454   0.008   0.222   Male   66

178   0.000   2.211   377.197   0.000   0.300   Female   60

179   0.000   5.126   529.235   0.008   0.237   Male   78

180   0.000   3.566   362.451   0.000   0.178   Female   74

181   0.000   2.164   629.407   0.000   0.154   Female   77

187   0.000   0.588   359.400   0.000   0.172   Female   52

188   0.000   0.000   408.724   0.000   0.157   Female   57

189   0.000   4.196   474.827   0.000   0.180   Female   61

190   0.000   3.755   319.230   0.000   0.186   Female   60

192   1.838   4.228   296.856   0.247   0.192   Female   56

194   0.000   7.906   612.027   0.000   0.782   Male   53

195   0.000   9.106   657.256   0.000   0.761   Male   46

197   0.000   9.984   637.628   0.499   0.688   Female   82

198   11.582   1.616   658.963   0.000   0.477   Female   62

199   0.000   6.005   616.294   0.000   0.595   Female   56

204   0.000   6.209   516.449   0.000   0.499   Female   63

205   2.825   6.092   806.596   0.000   0.452   Male   68

Table S1b (continued)

Page 24: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 9

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

206   5.744   9.106   760.514   0.355   0.489   Female   61

208   0.000   3.986   577.892   0.000   0.458   Female   73

210   0.393   5.215   1,589.362   0.000   0.589   Female   59

211   2.825   9.925   850.971   0.000   0.534   Female   67

213   0.000   8.550   842.438   0.000   0.506   Female   66

215   3.312   6.970   829.637   0.000   0.416   Female   61

219   7.204   7.204   677.737   0.000   0.494   Male   62

226   1.366   7.848   733.206   0.000   0.638   Female   56

227   58.774   2.845   749.420   0.000   0.484   Female   63

230   12.069   9.749   810.010   0.000   0.518   Female   61

231   11.096   1.616   891.080   0.000   0.451   Male   66

232   2.339   3.723   651.282   0.000   0.471   Female   73

233   17.053   8.757   520.701   0.000   0.959   Female   55

235   4.340   6.822   460.662   0.000   0.749   Female   57

242   5.248   11.799   1,428.173   0.000   0.870   Male   49

244   5.248   7.467   690.222   0.000   0.515   Male   70

245   0.000   8.435   530.119   0.000   0.586   Female   61

247   7.972   12.583   620.765   0.377   0.790   Female   70

252   1.162   24.018   714.943   0.000   0.763   Male   52

253   10.697   16.477   458.308   0.000   0.854   Male   53

254   0.000   12.191   606.638   0.000   0.841   Female   74

255   5.702   13.182   790.286   9.195   0.801   Male   58

256   7.972   10.324   786.754   0.000   0.592   Male   51

260   24.772   14.587   692.576   2.779   0.604   Male   51

262   0.000   9.449   664.323   4.881   0.532   Male   45

264   0.000   3.411   344.117   1.551   0.451   Male   51

268   12.967   20.486   742.020   52.528   0.729   Male   51

269   0.000   13.251   701.994   14.873   0.566   Male   52

271   0.000   8.343   586.626   23.363   0.688   Male   43

272   0.000   12.168   672.563   68.580   0.716   Male   46

273   0.000   5.664   361.031   23.083   0.995   Male   46

276   2.306   7.991   470.348   1.464   0.663   Male   46

280   15.948   8.457   351.333   7.924   0.548   Male   71

281   0.123   6.532   517.073   15.106   0.938   Female   20

282   7.763   2.893   506.493   37.261   0.793   Female   23

Table S1b (continued)

Page 25: Diagnostic value of 5 serum biomarkers for hepatocellular

10 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

283   1.215   3.189   305.491   54.828   0.711   Female   26

284   12.674   5.030   805.353   52.333   0.509   Male   40

286   5.034   2.639   592.008   267.161   0.627   Female   28

288   6.126   3.041   153.857   39.622   0.653   Female   22

290   10.491   34.149   1,097.318   335.264   0.897   Male   27

294   18.676   10.234   851.196   9.909   0.467   Male   30

295   23.041   8.901   354.860   13.446   0.411   Male   34

296   21.950   2.173   223.503   4.207   0.235   Male   33

297   7.217   1.095   606.995   10.054   0.218   Male   42

299   25.769   8.266   536.468   16.586   0.338   Male   25

300   14.856   7.314   356.623   22.649   0.373   Female   37

301   9.945   5.156   420.979   13.410   0.252   Male   33

305   0.000   8.922   500.322   15.539   0.675   Male   62

307   6.671   14.782   366.320   23.263   0.418   Male   41

309   0.000   8.372   466.822   15.828   0.489   Male   28

311   14.856   9.070   199.700   21.603   0.699   Male   51

313   0.000   11.170   576.439   44.420   0.391   Male   47

315   0.000   2.590   865.776   38.233   0.395   Male   30

316   0.000   4.868   898.607   12.528   0.318   Female   35

318   0.000   5.621   742.099   16.973   0.415   Female   66

319   0.000   13.995   532.305   40.362   0.379   Male   60

321   0.000   2.642   570.682   1.094   0.475   Female   47

322   0.000   5.056   513.756   23.366   0.540   Female   41

325   57.185   0.000   878.336   4.806   0.344   Female   40

327   0.000   3.121   634.004   0.063   0.578   Female   46

328   0.000   1.871   680.056   7.487   0.369   Female   31

329   0.000   6.032   738.901   22.679   0.291   Male   31

333   0.000   5.227   576.439   106.452   0.337   Female   42

336   0.000   12.933   641.040   176.700   0.283   Female   33

338   0.000   1.152   593.708   66.447   0.271   Female   47

344   0.000   17.249   843.158   110.541   0.384   Male   35

346   0.000   2.196   478.578   12.528   0.209   Male   61

347   0.000   8.156   728.027   20.090   0.323   Male   69

Table S1b (continued)

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Cancer Biol Med Vol 18, No 1 February 2021 11

Table S2a The information of 54 NBNC-HCC patients (test group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender  Age

9   1,895.072   479.602   14,431.953   38.260   4.291   Female   68

620   103.799   8.725   711.468   4.045   0.238   Female   49

545   88.895   9.277   7,278.588   3.062   0.508   Female   65

395   1,303.483   174.560   12,793.993   16.906   2.034   Female   77

590   1,245.818   36.586   4,023.670   30.478   0.311   Male   54

586   427.605   16.869   1,507.894   51.215   0.570   Male   60

574   435.096   17.330   9,471.676   13.364   0.346   Male   73

543   893.821   32.685   1,643.010   26.444   1.053   Male   69

132   55.332   32.535   702.669   22.067   0.525   Male   62

94   0.000   33.453   291.770   5.691   1.195   Male   40

72   5,887.511   49.575   921.998   21.104   0.733   Male   56

45   9,630.275   192.102   5,128.398   5.418   1.461   Male   61

19   0.000   253.009   7,026.921   31.044   1.578   Male   72

18   0.000   43.676   762.983   6.796   1.029   Male   49

65   3,208.245   29.461   1,296.319   0.720   0.848   Male   57

589   9.957   7.497   724.291   10.818   0.223   Male   47

473   11.526   78.777   1,401.820   6.096   0.392   Male   49

459   367.386   30.063   9,080.726   8.021   0.441   Male   79

367   14.006   26.425   538.084   1.084   0.371   Male   66

195   5,966.582   384.668   13,014.503   15.682   1.325   Male   73

193   0.000   202.639   634.542   7.732   1.137   Male   64

157   7.859   14.117   671.018   22.448   0.616   Male   67

129   2.584   21.124   842.257   19.302   0.703   Male   52

115   0.000   21.124   711.596   1.007   0.475   Male   57

8   0.000   26.625   638.297   18.225   0.936   Male   61

598   6,626.332   28.049   15,256.585   18.983   0.299   Male   58

87   7,673.842   71.793   1,768.286   12.708   1.100   Male   58

Page 27: Diagnostic value of 5 serum biomarkers for hepatocellular

12 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S2b The information of 54 NBNC-HCC patients (validation group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

636   7,357.865   8.035   599.087   19.989   0.218   Female   62

628   0.000   8.280   451.785   1.467   0.208   Female   39

542   3.727   17.651   687.167   5.365   0.398   Female   62

393   182.199   18.098   977.582   5.289   0.474   Female   52

294   0.000   487.276   5,452.020   10.940   2.870   Female   55

231   7.795   321.586   625.718   129.202   1.794   Female   76

229   0.000   80.686   584.808   17.504   1.036   Female   72

80   44.989   47.079   1,860.445   12.291   0.631   Female   50

646   64.684   10.706   729.246   2.868   0.236   Male   40

616   0.000   76.231   2,331.890   236.046   1.306   Male   70

603   0.000   12.614   811.063   6.311   0.321   Male   21

572   3,304.545   8.781   6,867.373   20.216   0.297   Male   65

556   0.000   17.386   906.014   4.151   0.374   Male   77

524   892.291   14.432   8,949.422   139.367   0.605   Male   63

523   5,804.144   66.970   2,510.479   16.133   1.118   Male   60

486   33.048   19.702   618.687   2.651   0.538   Male   47

463   0.000   13.065   636.543   55.485   0.302   Male   54

422   65.080   18.596   765.263   6.572   0.350   Male   66

373   735.086   59.020   805.772   3.048   0.519   Male   63

203   375.112   625.725   5,492.826   13.993   0.983   Male   72

185   0.000   169.128   1,489.102   13.794   0.749   Male   52

138   0.000   69.744   784.637   18.358   1.418   Male   59

73   72.010   21.360   248.074   1.597   0.479   Male   66

57   2.921   32.959   294.995   0.000   0.920   Male   58

23   9,294.590   36.968   743.033   58.214   0.705   Male   70

11   6,119.195   76.334   2,671.297   37.285   1.083   Male   62

5   10,817.572   121.048   1,639.530   10.541   1.482   Male   77

Page 28: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 13

Table S3a The information of 154 hepatitis patients (test group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

4   0.000   33.712   2,296.099   6.708   0.930   Female   56

91   0.000   15.270   771.755   47.542   0.826   Female   62

148   0.000   13.256   370.937   0.000   0.802   Female   75

80   0.000   19.843   258.479   0.288   0.722   Female   55

149   0.000   8.476   436.495   14.507   0.612   Female   73

6   0.000   3.930   360.443   0.193   0.601   Female   81

55   0.000   20.249   503.238   24.519   0.591   Female   27

30   19.281   4.121   2,852.941   1.052   0.588   Female   55

28   0.000   10.349   2,130.785   8.013   0.548   Female   62

43   448.103   18.947   330.408   16.005   0.510   Female   63

10   0.000   0.834   4,419.132   14.608   0.506   Female   58

111   0.000   11.457   192.518   2.551   0.476   Female   30

12   1.934   6.681   630.131   10.183   0.451   Female   60

64   0.000   3.870   1,340.159   21.521   0.441   Female   58

74   0.000   5.246   812.586   0.000   0.415   Female   33

152   0.000   5.107   79.650   124.536   0.406   Female   49

103   0.000   14.961   575.769   249.865   0.387   Female   88

21   0.000   0.624   924.221   0.537   0.374   Female   34

75   0.000   6.984   475.170   0.354   0.365   Female   63

145   0.000   9.730   1,012.364   16.331   0.360   Female   67

31   8.892   7.483   525.635   15.489   0.352   Female   66

41   0.000   0.000   528.137   0.000   0.342   Female   66

127   0.000   12.848   266.911   11.830   0.331   Female   53

63   0.000   8.924   593.415   6.157   0.308   Female   55

46   0.000   3.261   525.635   4.189   0.295   Female   57

132   15.551   5.629   238.331   8.599   0.275   Female   56

51   0.000   4.254   457.254   0.000   0.274   Female   62

123   0.000   12.719   260.241   12.164   0.270   Female   82

113   0.000   16.945   295.642   6.144   0.267   Female   36

118   0.000   7.721   329.504   43.163   0.254   Female   36

102   0.000   14.652   426.471   15.304   0.246   Female   71

146   0.000   5.420   296.439   33.829   0.211   Female   68

88   0.000   2.593   396.200   0.029   0.193   Female   54

47   0.000   6.961   620.288   0.000   0.188   Female   58

119   0.000   3.160   144.804   2.979   0.159   Female   43

84   0.000   0.509   5,386.430   0.000   0.070   Female   50

Page 29: Diagnostic value of 5 serum biomarkers for hepatocellular

14 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

8   0.000   10.598   712.101   28.676   0.988   Male   22

20   9.691   17.820   661.417   0.665   0.987   Male   63

7   0.000   12.145   2,690.393   89.557   0.966   Male   80

83   0.000   13.052   742.714   0.000   0.865   Male   40

33   0.000   12.413   2,794.616   1.675   0.782   Male   38

106   0.000   26.504   657.857   58.107   0.739   Male   62

141   0.000   18.559   445.435   29.456   0.703   Male   60

77   0.000   16.730   1,547.571   81.292   0.665   Male   37

16   11.689   12.566   3,408.180   91.712   0.568   Male   66

99   0.000   25.978   674.788   14.424   0.537   Male   43

67   0.000   10.413   2,306.657   9.036   0.523   Male   33

62   0.000   30.063   426.199   0.442   0.519   Male   44

85   0.000   12.353   690.758   13.191   0.515   Male   53

128   0.232   9.234   569.101   2.665   0.492   Male   77

44   49.250   7.713   4,151.063   1.632   0.447   Male   43

130   0.000   12.891   1,631.498   63.595   0.428   Male   40

140   0.000   19.264   814.944   12.041   0.426   Male   30

32   0.000   13.846   3,416.174   8.550   0.418   Male   49

122   0.000   15.296   864.618   14.781   0.417   Male   69

14   0.901   3.605   830.363   10.612   0.404   Male   29

155   20.338   6.805   228.646   24.076   0.396   Male   54

95   0.000   7.206   328.477   3.289   0.389   Male   56

36   0.000   8.133   2,345.740   0.601   0.369   Male   27

109   0.000   16.172   392.096   8.928   0.348   Male   64

164   5.328   0.000   768.046   29.778   0.343   Male   63

169   0.000   0.124   1,351.050   19.362   0.337   Male   49

79   0.000   18.895   2,140.239   9.806   0.330   Male   25

150   0.000   13.256   877.523   199.148   0.322   Male   44

86   0.000   4.863   332.440   0.794   0.317   Male   55

171   401.717   7.307   2,615.363   39.726   0.314   Male   41

131   0.000   6.387   510.993   24.850   0.302   Male   62

161   0.000   2.981   1,060.837   23.174   0.297   Male   49

69   0.000   6.036   1,064.152   17.147   0.283   Male   25

135   0.000   3.488   328.473   0.918   0.277   Male   57

129   0.000   6.700   420.851   0.000   0.271   Male   20

Table S3a (continued)

Page 30: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 15

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

170   0.000   4.629   2,065.907   10.217   0.250   Male   52

66   0.000   4.096   1,257.576   4.706   0.243   Male   29

37   0.000   3.968   1,944.007   3.437   0.240   Male   30

163   0.000   2.582   820.856   21.575   0.237   Male   66

138   0.000   4.349   486.409   0.000   0.222   Male   61

162   0.000   2.417   850.125   7.125   0.210   Male   42

120   0.000   6.046   266.911   0.243   0.202   Male   31

42   0.000   1.255   4,137.875   0.687   0.202   Male   61

53   13.169   2.765   5,400.203   0.000   0.156   Male   30

90   63.563   17.795   1,243.409   21.300   0.513   Male   40

100   42.340   84.894   4,935.180   5.597   0.876   Male   46

Table S3a (continued)

Page 31: Diagnostic value of 5 serum biomarkers for hepatocellular

16 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S3b The information of 154 hepatitis patients (validation group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

98   474.436   25.202   486.498   23.513   0.600   Female   32

48   27.915   7.660   3,236.716   6.245   0.437   Female   46

15   25.275   7.866   1,239.505   11.859   0.843   Female   26

78   9.072   10.458   686.577   11.894   0.731   Female   60

17   2.499   4.445   785.310   7.927   0.421   Female   48

73   0.000   7.277   3,029.426   3.607   0.987   Female   27

19   0.000   22.024   790.942   0.000   0.970   Female   43

2   0.000   8.036   722.910   34.394   0.791   Female   64

26   0.000   23.017   5,820.360   5.972   0.763   Female   29

49   0.000   13.052   620.886   12.443   0.715   Female   38

114   0.000   24.031   950.297   15.399   0.611   Female   66

96   0.000   12.307   543.960   83.425   0.572   Female   35

13   0.000   6.089   561.301   7.261   0.549   Female   30

112   0.000   11.869   285.894   0.434   0.485   Female   27

168   0.000   10.081   830.400   14.776   0.464   Female   46

156   0.000   8.738   843.999   31.749   0.388   Female   47

158   0.000   2.129   1,126.420   3.099   0.371   Female   57

157   0.000   13.283   1,495.704   0.071   0.366   Female   81

68   0.000   7.954   948.309   5.871   0.350   Female   57

94   0.000   9.937   343.869   9.070   0.333   Female   27

154   0.000   5.499   382.112   0.000   0.315   Female   32

151   0.000   11.167   596.666   7.597   0.277   Female   47

167   0.000   2.802   902.299   4.379   0.274   Female   67

52   0.000   1.140   554.597   0.000   0.253   Female   20

133   0.000   4.167   373.172   49.701   0.250   Female   30

124   0.000   6.278   385.939   24.917   0.238   Female   55

72   0.000   1.637   607.747   0.000   0.221   Female   25

45   0.000   1.350   1,093.725   2.406   0.204   Female   44

153   0.000   10.279   408.186   0.000   0.190   Female   68

101   219.763   17.589   518.307   100.118   0.535   Male   28

136   17.466   14.745   2,471.872   59.010   0.397   Male   49

11   13.288   0.000   718.417   14.403   0.312   Male   30

38   8.493   6.413   787.188   21.891   0.346   Male   17

142   5.019   7.327   471.509   27.539   0.321   Male   57

87   4.976   0.000   388.576   0.000   0.180   Male   28

39   0.101   3.968   2,220.762   3.910   0.198   Male   36

Page 32: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 17

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

104   0.000   16.610   222.275   294.007   0.963   Male   20

22   0.000   6.394   825.357   0.000   0.632   Male   28

126   0.000   20.295   288.459   71.460   0.542   Male   71

60   0.000   12.646   3,580.859   18.686   0.519   Male   42

125   0.000   11.818   2,476.641   0.291   0.518   Male   45

58   0.000   2.898   15,138.761   91.864   0.510   Male   38

82   0.000   6.374   722.409   236.751   0.502   Male   63

59   0.000   14.947   1,801.335   0.000   0.449   Male   44

35   0.000   7.694   851.637   1.353   0.443   Male   40

166   0.000   5.357   1,247.496   1.260   0.427   Male   51

108   0.000   17.331   502.402   22.689   0.417   Male   29

144   0.000   10.775   315.064   102.886   0.416   Male   51

5   0.000   4.217   502.243   64.780   0.414   Male   24

137   0.000   16.939   622.740   38.144   0.404   Male   43

50   0.000   7.164   449.490   0.000   0.390   Male   48

34   0.000   20.075   17,961.375   17.229   0.382   Male   43

81   0.000   5.630   423.811   0.000   0.361   Male   40

143   0.000   18.115   382.857   222.017   0.355   Male   88

40   0.000   7.292   728.369   2.320   0.342   Male   57

56   0.000   29.960   810.948   0.000   0.339   Male   50

70   0.000   9.059   924.720   18.642   0.331   Male   52

93   0.000   8.700   236.128   7.833   0.328   Male   66

165   0.000   0.000   876.848   10.644   0.305   Male   42

147   0.000   10.331   394.031   20.402   0.300   Male   42

27   0.000   15.852   904.824   1.740   0.297   Male   59

139   0.000   8.529   309.849   0.000   0.289   Male   28

76   0.000   5.224   776.754   0.926   0.283   Male   25

116   0.000   14.446   491.115   15.447   0.272   Male   51

134   0.000   6.230   1,461.243   31.083   0.271   Male   23

89   0.000   4.964   308.981   2.051   0.270   Male   54

160   0.000   1.566   754.685   22.801   0.264   Male   60

110   0.000   22.356   597.317   1.671   0.246   Male   32

29   0.000   2.688   1,038.700   1.396   0.234   Male   24

121   0.000   4.912   495.733   0.077   0.211   Male   30

92   0.000   13.209   635.283   18.469   0.128   Male   62

54   46.758   18.805   611.928   6.047   0.812   Male   42

Table S3b (continued)

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18 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S4a The information of 122 liver cirrhosis patients (test group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

66   0.000   25.480   750.370   7.247   0.770   Female   58

132   11.959   16.730   791.360   0.137   0.678   Female   66

88   40.886   17.747   756.035   63.879   0.674   Female   52

64   0.000   18.221   2,808.378   4.731   0.586   Female   60

111   0.000   20.965   806.361   151.712   0.584   Female   58

50   0.000   8.039   517.043   4.731   0.488   Female   68

109   0.000   5.481   1,767.259   113.406   0.470   Female   53

130   38.686   10.771   607.834   5.060   0.446   Female   58

97   0.000   9.132   371.566   66.681   0.439   Female   47

34   0.000   15.931   4,091.807   2.003   0.420   Female   57

113   23.837   5.865   799.924   14.529   0.402   Female   61

12   0.000   20.872   5,950.131   42.933   0.377   Female   56

131   29.390   9.690   2,284.608   2.372   0.374   Female   63

93   0.000   9.996   537.759   27.150   0.353   Female   52

28   0.000   12.159   1,389.649   0.000   0.320   Female   67

39   15.573   11.011   8,781.347   1.249   0.317   Female   58

36   0.000   8.862   687.157   0.000   0.309   Female   55

15   0.000   9.781   9,807.197   52.948   0.307   Female   34

17   0.000   11.154   3,213.889   37.136   0.276   Female   64

134   74.709   22.569   1,444.856   65.761   0.227   Female   44

25   11.067   17.448   6,662.214   33.222   0.730   Female   62

61   0.000   20.843   1,918.679   7.499   0.631   Female   61

44   0.000   11.341   3,559.411   0.000   0.537   Female   43

3   0.000   16.444   2,139.721   109.676   0.425   Female   69

42   0.000   21.064   3,182.935   8.757   0.386   Female   74

2   0.000   14.763   3,843.661   71.194   0.344   Female   55

128   19.319   16.054   10,257.127   0.089   0.330   Female   52

136   20.481   6.928   441.131   96.684   0.157   Female   56

86   0.000   14.928   634.315   148.098   0.736   Male   48

147   86.717   10.276   866.809   30.909   0.697   Male   51

59   0.000   8.972   746.686   0.094   0.566   Male   58

125   26.678   22.857   790.340   30.523   0.550   Male   71

30   18.953   13.942   3,593.142   1.788   0.537   Male   50

96   0.000   10.188   626.708   34.205   0.494   Male   61

92   0.000   12.398   3,653.862   1.139   0.485   Male   53

168   0.000   7.051   730.635   16.419   0.466   Male   57

Page 34: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 19

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

107   31.144   14.736   4,670.679   20.631   0.451   Male   63

90   0.000   23.095   503.818   22.036   0.446   Male   37

77   0.000   3.125   328.540   3.006   0.443   Male   55

149   37.524   4.242   661.872   5.298   0.415   Male   39

20   0.000   153.755   2,824.100   7.284   0.375   Male   81

41   0.000   6.149   536.078   17.563   0.327   Male   51

116   0.000   7.466   686.982   0.000   0.269   Male   60

7   0.000   15.296   1,336.447   13.823   0.195   Male   40

114   0.000   7.098   493.870   61.342   0.165   Male   63

148   58.828   27.544   5,168.250   86.835   1.565   Male   48

68   0.000   19.825   596.252   0.000   0.919   Male   36

85   0.000   38.537   13,256.484   55.564   0.873   Male   83

115   150.484   21.077   3,670.743   19.226   0.711   Male   53

95   0.000   16.882   8,772.287   115.475   0.608   Male   59

45   0.000   8.316   767.562   189.195   0.526   Male   51

89   45.757   12.622   4,459.584   33.976   0.518   Male   49

84   0.000   12.959   695.760   105.751   0.513   Male   64

83   5.977   19.188   2,134.075   7.724   0.484   Male   63

35   1.678   78.515   4,407.081   4.302   0.464   Male   58

80   0.000   11.038   4,075.448   2.790   0.456   Male   69

119   35.203   4.055   926.606   38.065   0.396   Male   52

72   0.000   4.385   537.306   2.287   0.382   Male   53

102   0.000   13.487   857.857   263.322   0.283   Male   64

122   13.896   12.602   1,884.033   0.588   0.259   Male   62

156   35.200   6.013   620.069   9.365   0.461   Male   47

Table S4a (continued)

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20 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S4b The information of 122 liver cirrhosis patients (validation group)

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

144   84.393   14.929   612.932   53.989   0.389   Female   66

31   35.854   22.471   6,648.916   1.895   0.419   Female   56

158   20.093   8.444   843.869   12.719   0.349   Female   41

129   19.319   6.673   665.441   0.000   0.353   Female   57

159   14.670   19.687   401.877   4.870   0.375   Female   69

38   13.696   4.391   4,390.777   0.351   0.532   Female   56

123   12.346   10.261   694.499   23.946   0.314   Female   58

1   8.438   57.606   13,737.133   2.686   0.539   Female   62

127   6.923   12.152   556.345   1.397   0.276   Female   64

10   4.307   55.399   9,944.413   244.758   0.739   Female   67

26   4.307   14.332   12,638.712   2.758   0.503   Female   79

106   2.324   9.100   926.324   168.472   0.429   Female   58

108   1.512   21.174   10,330.802   41.274   0.634   Female   79

33   0.000   95.614   3,015.989   22.481   0.584   Female   64

73   0.000   12.878   732.563   2.898   0.488   Female   62

57   0.000   17.138   789.667   176.297   0.472   Female   56

164   0.000   7.203   910.142   4.170   0.454   Female   57

5   0.000   48.923   1,265.965   13.248   0.448   Female   80

51   0.000   10.887   848.613   115.078   0.440   Female   65

58   0.000   16.886   793.965   2.682   0.412   Female   68

13   0.000   11.544   5,664.016   13.284   0.278   Female   62

69   0.000   15.903   1,466.135   23.710   0.901   Female   77

60   0.000   53.580   1,309.998   15.658   0.842   Female   78

37   0.000   7.649   2,003.123   2.111   0.722   Female   60

65   0.000   6.754   2,124.246   1.927   0.521   Female   38

54   0.000   19.154   2,491.420   6.313   0.516   Female   76

100   0.000   7.786   1,080.498   11.193   0.509   Female   50

43   0.000   9.047   1,619.109   0.777   0.482   Female   56

121   7,087.474   45.786   2,327.570   4.442   0.551   Male   63

56   529.387   17.339   5,001.452   4.300   0.587   Male   55

135   155.277   11.762   791.870   57.486   0.246   Male   52

126   84.005   10.921   7,268.692   0.000   0.249   Male   65

137   63.476   15.769   694.499   55.374   0.733   Male   41

120   46.569   9.420   589.841   0.086   0.318   Male   48

19   33.225   15.193   4,705.558   54.897   0.676   Male   61

32   26.089   56.840   6,366.152   10.410   0.683   Male   59

Page 36: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 21

Number   AFP (ng/mL)   AFU (mU/mL)  GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)  Gender   Age

22   13.320   193.434   4,003.065   281.905   0.599   Male   71

29   9.565   13.409   2,483.094   0.351   0.327   Male   77

11   5.433   12.774   2,646.735   19.858   0.621   Male   49

27   4.682   7.485   701.973   0.000   0.304   Male   58

105   3.947   3.399   1,976.577   1.534   0.174   Male   71

99   1.918   9.820   725.605   0.000   0.384   Male   60

162   0.961   187.848   10,392.088   37.033   1.954   Male   53

82   0.700   18.724   825.087   125.973   1.050   Male   46

87   0.294   9.820   1,356.832   3.773   0.375   Male   31

91   0.000   14.336   533.078   324.506   0.581   Male   60

46   0.000   51.457   645.373   134.265   0.569   Male   59

76   0.000   2.797   366.609   14.867   0.491   Male   56

75   0.000   5.620   291.699   0.274   0.469   Male   24

55   0.000   17.339   739.932   130.167   0.446   Male   65

101   0.000   9.180   755.449   22.519   0.443   Male   63

94   0.000   12.062   845.568   37.708   0.422   Male   29

79   0.000   5.796   1,029.354   2.215   0.400   Male   39

118   0.000   11.646   612.078   4.563   0.326   Male   55

71   0.000   11.895   601.164   35.859   0.309   Male   28

62   0.000   35.971   574.147   7.714   0.397   Male   64

110   0.000   51.260   1,465.170   67.278   0.338   Male   51

48   0.000   7.737   824.666   1.424   0.265   Male   50

98   52.840   39.656   631.885   6.032   0.200   Male   60

141   49.919   13.022   1,056.713   3.704   0.135   Male   58

103   51.440   9.932   1,608.696   17.075   0.572   Male   53

Table S4b (continued)

Page 37: Diagnostic value of 5 serum biomarkers for hepatocellular

22 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S5a The information of 244 hepatitis HCC (test group)

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

553   545.774   21.156   770.980   9.449   0.822   Female   61

625   0.000   34.861   2,334.766   7.940   0.764   Female   66

215   5,139.339   20.564   738.022   9.984   0.729   Female   61

205   0.000   252.200   282.390   13.529   0.695   Female   60

641   1,353.368   10.239   482.896   8.193   0.656   Female   60

166   0.000   15.244   341.524   7.952   0.621   Female   60

549   0.000   19.994   1,715.524   9.524   0.619   Female   62

548   11.712   12.761   1,783.750   2.914   0.605   Female   62

219   781.657   14.984   187.734   9.951   0.470   Female   59

158   57.593   18.964   2,396.014   20.125   0.446   Female   51

405   2,430.981   16.024   552.622   14.863   0.386   Female   35

660   12.794   2.033   2,245.969   27.692   0.363   Female   54

624   129.614   6.922   1,094.828   4.886   0.304   Female   67

645   4,673.718   9.103   434.008   3.709   0.286   Female   35

189   386.961   14.101   400.309   8.229   0.266   Female   60

571   5,963.545   48.031   12,111.739   70.245   1.571   Female   23

271   9,559.211   49.808   3,695.517   1.829   1.314   Female   51

175   0.000   52.577   526.249   44.585   1.120   Female   53

256   2,560.416   20.516   2,304.106   1.490   1.074   Female   57

28   71.590   18.400   673.209   10.364   0.974   Female   38

51   1,748.145   16.248   467.061   0.000   0.920   Female   52

482   1,151.405   18.790   3,324.837   10.040   0.829   Female   59

183   1,856.493   287.940   618.499   67.007   0.830   Female   56

597   0.000   13.276   1,648.955   9.989   0.521   Female   63

528   6,504.857   12.680   2,383.991   16.876   0.448   Female   53

105   117.866   19.286   360.675   5.440   0.809   Male   52

103   116.709   34.349   668.226   23.360   0.793   Male   50

177   185.529   174.699   770.911   48.421   0.791   Male   59

202   2,908.996   132.040   6,253.708   33.533   0.786   Male   57

591   77.380   12.795   934.489   11.626   0.761   Male   63

452   5,886.027   95.877   9,974.303   13.723   0.740   Male   41

551   5,035.737   18.670   596.368   34.794   0.721   Male   61

38   68.843   19.788   357.338   1.072   0.710   Male   56

223   0.000   15.126   358.596   11.541   0.681   Male   51

377   2,110.446   92.937   6,199.594   2.438   0.677   Male   58

638   15.399   15.270   842.041   54.896   0.664   Male   56

Page 38: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 23

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

477   5,622.440   16.328   1,590.350   13.794   0.663   Male   45

442   278.796   34.689   1,690.819   9.185   0.655   Male   57

3   6,457.829   22.518   748.647   30.870   0.634   Male   35

99   3,577.713   14.260   482.519   13.418   0.623   Male   54

27   22.148   21.332   759.658   15.382   0.588   Male   49

557   476.144   12.537   10,369.306   10.588   0.582   Male   65

131   0.000   14.380   601.223   19.254   0.574   Male   59

479   21.536   6.344   499.056   12.582   0.568   Male   47

252   2,644.511   21.016   1,610.891   2.811   0.556   Male   53

208   0.000   8.976   655.398   15.748   0.551   Male   48

540   37.661   18.364   12,459.634   2.740   0.545   Male   60

303   0.000   20.168   1,204.981   0.169   0.542   Male   62

14   63.350   28.140   672.378   3.580   0.538   Male   58

275   6,387.175   61.427   8,111.757   10.195   0.522   Male   60

633   0.000   16.740   827.658   6.679   0.512   Male   45

546   6,887.685   11.580   1,643.010   2.864   0.504   Male   49

554   27.681   16.958   9,656.203   9.226   0.499   Male   70

110   47.043   17.555   1,416.192   0.837   0.491   Male   54

159   0.000   17.724   814.162   9.598   0.480   Male   48

140   108.080   21.816   4,109.390   7.904   0.475   Male   60

413   5,416.129   49.280   3,943.944   1.226   0.464   Male   53

651   25.691   7.664   3,760.865   12.804   0.462   Male   57

560   1.731   9.114   612.083   36.287   0.455   Male   61

55   5.668   11.730   349.025   0.000   0.445   Male   60

500   5.520   6.842   773.137   24.284   0.432   Male   54

511   0.000   2.527   828.489   14.507   0.430   Male   47

601   10.893   6.794   722.047   12.738   0.426   Male   58

555   17.700   15.064   1,704.274   19.228   0.421   Male   67

460   427.446   8.722   1,043.711   3.459   0.416   Male   55

567   60.284   16.571   697.061   123.702   0.414   Male   52

649   0.000   7.224   2,963.970   27.836   0.410   Male   51

647   0.000   8.012   1,154.634   18.336   0.404   Male   44

541   0.000   14.045   548.059   11.355   0.395   Male   44

588   12.766   10.989   667.584   8.292   0.363   Male   82

609   67.813   15.849   788.293   5.727   0.362   Male   56

Table S5a (continued)

Page 39: Diagnostic value of 5 serum biomarkers for hepatocellular

24 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

527   0.000   8.462   894.955   33.432   0.354   Male   46

509   54.069   0.867   479.415   23.321   0.347   Male   63

612   0.000   9.460   845.436   13.573   0.338   Male   59

372   567.464   48.923   706.861   2.201   0.317   Male   39

592   194.434   23.411   4,312.584   10.272   0.307   Male   57

584   10.893   15.404   2,227.369   49.970   0.301   Male   59

596   110.155   96.378   20,084.400   19.205   0.299   Male   59

648   373.209   6.661   2,776.921   0.000   0.298   Male   66

613   0.000   7.990   823.849   5.783   0.289   Male   44

659   0.000   11.894   876.212   6.672   0.274   Male   52

582   0.000   9.303   847.717   16.436   0.265   Male   69

583   0.000   8.099   677.165   70.670   0.263   Male   50

570   428.541   5.951   700.031   13.021   0.258   Male   53

278   0.000   21.713   1,840.606   2.642   3.730   Male   45

21   9,797.067   195.955   1,708.972   355.697   2.633   Male   44

7   2.921   60.984   3,854.782   49.639   2.309   Male   50

190   9.770   135.316   678.661   20.088   2.238   Male   62

283   138.925   75.798   14,314.019   19.238   1.842   Male   40

59   7.972   129.682   4,795.568   18.890   1.725   Male   52

32   0.000   38.262   1,235.579   0.047   1.511   Male   55

136   0.000   51.914   453.519   137.894   1.495   Male   52

191   215.151   434.019   742.033   8.891   1.444   Male   55

58   6,094.917   97.200   5,485.909   9.234   1.398   Male   66

70   6,531.637   105.350   2,163.427   22.357   1.346   Male   60

197   6,102.796   156.701   1,691.291   6.805   1.231   Male   43

79   0.000   22.205   456.470   73.586   1.217   Male   61

181   3,087.239   343.843   406.726   16.245   1.197   Male   72

34   9,823.263   115.061   1,487.400   20.222   1.176   Male   38

139   102.806   0.000   576.877   3.160   1.141   Male   53

301   120.418   76.502   1,234.232   1.998   1.108   Male   56

114   1.077   34.375   1,154.684   2.822   1.024   Male   44

42   16.655   48.972   505.299   2.167   1.008   Male   50

85   71.595   13.032   334.625   2.809   0.968   Male   50

296   42.923   99.391   870.927   64.424   0.954   Male   63

146   254.268   71.919   4,562.507   12.018   0.945   Male   44

Table S5a (continued)

Page 40: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 25

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

212   0.000   34.467   340.948   45.022   0.935   Male   60

68   4,451.586   39.734   4,399.074   18.431   0.926   Male   60

67   0.000   18.376   352.272   0.177   0.903   Male   50

398   0.000   13.756   3,484.362   32.309   0.900   Male   43

124   0.000   46.230   964.002   18.673   0.880   Male   45

259   10.536   57.183   1,214.695   26.935   0.854   Male   58

312   0.000   25.792   727.271   2.540   0.844   Male   57

407   56.071   124.458   3,782.968   18.166   0.837   Male   56

387   7.413   86.047   2,383.693   2.254   1.018   Male   56

563   161.421   70.705   5,493.725   20.317   0.808   Male   84

17   0.000   51.062   3,893.093   42.721   1.033   Male   60

199   0.000   45.361   764.494   15.450   0.800   Male   57

269   17.476   21.930   351.253   2.608   1.285   Male   78

173   858.104   20.280   630.531   16.941   1.299   Male   65

371   4,716.357   17.166   1,172.866   1.795   0.428   Male   73

84   0.000   14.340   183.371   1.430   0.343   Male   67

656   12.794   4.230   3,153.492   4.939   0.266   Male   59

Table S5a (continued)

Page 41: Diagnostic value of 5 serum biomarkers for hepatocellular

26 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Table S5b The information of 244 hepatitis HCC (validation group)

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

650   9,852.325   12.210   4,283.284   10.591   0.514   Female   44

47   9,633.117   18.021   614.191   0.000   0.764   Female   55

46   5,382.944   14.497   1,169.839   0.000   0.974   Female   42

69   4,984.456   16.111   2,242.602   3.769   0.642   Female   59

579   4,560.545   8.460   746.732   5.422   0.270   Female   67

31   903.122   155.249   7,233.668   10.753   1.037   Female   57

537   554.388   8.258   3,400.518   1.948   0.411   Female   63

569   456.925   6.774   713.819   13.728   0.423   Female   62

587   318.043   12.313   11,851.811   13.647   0.680   Female   49

247   184.034   12.468   529.449   3.014   0.446   Female   65

610   129.614   15.537   920.992   10.939   0.352   Female   63

307   126.202   8.814   896.832   3.658   1.439   Female   70

402   58.073   132.238   15,918.837   14.744   1.003   Female   71

606   24.940   6.874   1,219.911   1.542   0.309   Female   57

566   19.031   9.298   1,444.578   23.857   0.426   Female   63

43   16.655   96.260   226.833   1.354   1.146   Female   56

575   9.957   7.336   872.402   7.989   0.285   Female   64

453   9.024   10.769   864.200   0.000   0.420   Female   65

562   0.000   6.629   6,833.949   5.216   0.347   Female   59

62   59.375   60.795   311.097   1.765   2.049   Female   77

167   0.000   13.722   1,802.633   4.007   0.574   Female   34

644   4,831.734   11.063   4,400.320   5.026   0.718   Female   56

654   10,340.953   1.841   657.336   6.432   0.288   Male   54

306   9,504.523   83.511   5,806.052   21.382   1.333   Male   49

615   7,589.057   17.519   5,724.224   76.724   0.468   Male   56

82   6,428.845   32.986   494.283   27.011   0.453   Male   36

64   6,373.376   43.353   1,238.855   15.047   0.924   Male   62

37   6,232.097   104.771   818.198   1.708   1.259   Male   69

16   6,214.831   39.433   875.201   17.254   1.213   Male   45

273   6,209.024   20.951   744.541   19.238   1.223   Male   55

178   6,136.615   159.149   3,136.487   39.649   0.663   Male   45

187   6,071.655   273.419   4,300.544   5.844   0.928   Male   55

397   5,999.737   21.141   5,464.136   2.699   0.302   Male   43

507   5,575.943   66.806   4,566.809   76.817   0.725   Male   48

370   5,285.960   80.587   4,093.100   2.303   0.792   Male   63

Page 42: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 27

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

116   5,149.800   48.661   1,802.633   2.313   0.460   Male   53

385   5,111.872   21.484   2,932.634   7.726   0.788   Male   67

382   5,069.321   13.204   766.521   1.535   0.295   Male   65

180   4,713.706   703.627   2,962.245   116.129   1.832   Male   46

475   4,499.951   6.427   965.083   8.211   0.538   Male   31

169   3,518.442   17.517   857.541   5.701   0.667   Male   59

100   3,446.153   39.274   666.546   15.214   1.119   Male   59

388   2,610.837   19.865   10,162.328   8.240   0.738   Male   56

489   2,296.835   11.958   708.857   1.440   0.619   Male   51

96   2,195.566   26.766   342.188   13.209   0.843   Male   57

639   1,865.760   13.756   674.008   29.225   0.362   Male   27

577   1,837.225   20.401   13,565.523   13.708   0.526   Male   50

78   1,661.705   10.208   259.838   24.279   0.415   Male   53

246   1,553.839   18.211   2,735.734   3.725   0.585   Male   64

446   1,372.806   10.520   478.522   1.986   0.365   Male   57

75   1,063.240   32.939   830.405   4.104   0.710   Male   45

461   733.012   12.567   12,522.107   14.483   0.479   Male   48

147   550.388   36.054   1,346.208   18.044   0.906   Male   57

547   541.150   10.316   855.376   9.672   0.301   Male   34

176   519.243   53.613   569.566   14.721   0.403   Male   53

576   477.239   19.977   1,929.334   31.040   0.701   Male   50

456   454.474   13.065   1,013.741   0.000   0.464   Male   44

519   415.595   12.476   3,443.506   7.593   0.483   Male   51

317   404.954   20.603   767.306   21.466   0.945   Male   46

565   359.038   10.235   839.661   144.788   0.338   Male   58

66   305.264   41.759   1,289.495   2.809   1.075   Male   68

392   267.832   30.417   6,689.392   8.830   1.384   Male   58

201   260.572   185.869   995.518   60.244   0.566   Male   53

12   247.384   11.872   369.806   51.479   0.470   Male   59

89   198.840   50.325   593.439   45.623   2.258   Male   44

184   192.441   551.973   6,795.512   11.740   0.825   Male   56

76   185.720   11.915   144.717   36.082   0.388   Male   58

53   178.714   67.456   499.480   2.450   2.363   Male   45

260   164.371   33.079   881.132   23.490   0.902   Male   57

196   152.945   70.806   0.000   8.925   0.612   Male   65

Table S5a (continued)

Page 43: Diagnostic value of 5 serum biomarkers for hepatocellular

28 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

274   147.021   32.624   4,467.932   3.725   0.570   Male   44

134   136.715   34.583   1,371.196   17.293   1.120   Male   62

573   136.375   7.276   2,349.475   34.995   0.548   Male   48

310   133.141   21.734   737.476   1.321   0.772   Male   48

593   95.172   123.940   2,512.192   48.343   0.575   Male   56

148   80.199   24.664   804.114   11.727   1.180   Male   62

653   67.094   7.128   7,067.529   5.339   0.952   Male   52

360   45.236   23.070   474.499   0.508   0.432   Male   56

261   32.513   22.376   4,726.772   12.362   0.657   Male   53

77   31.877   50.151   256.477   36.130   1.551   Male   55

81   25.188   98.377   827.044   33.375   2.118   Male   44

74   25.188   17.196   356.473   3.477   0.498   Male   51

450   10.025   16.964   610.652   43.078   0.695   Male   45

585   9.957   6.734   673.425   18.518   0.262   Male   52

561   8.385   14.289   645.260   9.350   0.552   Male   52

126   6.352   59.547   6,736.497   48.009   1.509   Male   50

41   5.668   16.019   378.950   4.499   0.894   Male   48

165   4.845   10.904   539.545   14.631   0.761   Male   56

534   4.392   4.815   651.662   4.226   0.298   Male   57

425   4.019   15.056   477.629   0.000   0.359   Male   36

118   2.584   17.254   805.625   10.396   0.820   Male   54

594   0.000   24.314   1,531.477   18.154   3.502   Male   50

617   0.000   316.716   15,108.376   30.733   1.689   Male   72

539   0.000   74.438   2,992.270   144.788   1.471   Male   54

88   0.000   21.376   473.276   8.072   1.009   Male   48

447   0.000   56.567   911.517   4.813   0.963   Male   66

172   0.000   206.436   649.783   62.461   0.864   Male   63

614   0.000   28.599   875.912   10.266   0.844   Male   54

171   0.000   20.598   652.352   37.079   0.795   Male   49

30   0.000   18.778   766.308   0.000   0.655   Male   55

455   0.000   38.916   867.771   0.751   0.624   Male   57

599   0.000   17.391   761.693   8.292   0.623   Male   70

499   0.000   18.458   895.447   65.053   0.601   Male   62

162   0.000   11.712   506.271   8.460   0.544   Male   49

108   0.000   17.686   853.619   2.725   0.506   Male   59

Table S5a (continued)

Page 44: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 29

Number   AFP (ng/mL)   AFU (mU/mL)   GGT2 (mU/mL)   GPC3 (ng/mL)   HGF (ng/mL)   Gender   Age

163   0.000   11.130   289.584   1.394   0.501   Male   58

538   0.000   6.710   425.248   1.602   0.444   Male   63

396   0.000   18.430   846.344   2.960   0.405   Male   69

383   0.000   3.670   600.391   5.825   0.363   Male   59

564   0.000   6.608   382.759   34.513   0.305   Male   66

658   0.000   4.340   899.117   0.000   0.266   Male   64

605   0.000   8.119   737.756   2.249   0.265   Male   52

20   0.000   274.126   3,216.747   3.439   1.822   Male   69

44   123.779   121.444   300.813   4.146   0.890   Male   76

50   439.658   77.904   633.310   0.153   1.159   Male   55

130   70.403   47.763   4,285.802   12.187   1.028   Male   55

168   0.000   45.117   931.627   4.128   1.389   Male   61

611   0.000   21.927   3,670.746   17.888   0.548   Male   74

151   4,520.299   18.982   2,603.688   15.406   0.475   Male   73

107   0.000   15.188   722.958   5.798   0.528   Male   53

619   7,322.315   12.888   1,191.285   20.746   0.284   Male   61

Table S5a (continued)

Page 45: Diagnostic value of 5 serum biomarkers for hepatocellular

30 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

996 subjects enrolled in Tianjin Medical University CancerInstitute and Hospital, Tianjin Third Central Hospital andTianjin Medical University General Hospital from July 2012to April 2014

75 excludedPrimary liver cancer other than HCC (27): ICC (23)and HCC-CC (4)Metastatic liver cancer (2)Other liver tumor such as sarcoma and adenoma,etc (11)Clinical data not available (35): HCC (34) and HBV(1)

921 subjects enrolled (all with values of AFP, AFU,GGT-II, GPC3 and HGF)

NBNC-HCC group Hepatitis-HCC group

HC NBNC-HCC CH LC Hepatitis-HCC

202 test cohort27 HCC175 HC

199 validation cohort27 HCC172 HC

266 test cohort

• •

• • •

• • • •

• •

• 82 CH61 LC

254 validation cohort121 HCC72 CH61 LC

202 ELISA testing at Tianjin MedicalUniversity Cancer Institute andHospital and the performance of thefive serum markers assessed by ROCanalysis

266 ELISA testing at Tianjin MedicalUniversity Cancer Institute andHospital and the performance of thefive serum markers assessed by ROCanalysis

Diagnostic exploration Diagnostic validation Diagnostic exploration Diagnostic validation

123 HCC

Figure S1 The study design. HC, healthy controls; CH, chronic hepatitis; LC, liver cirrhosis; HCC, hepatocellular carcinoma.

Page 46: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 31

0 0.2 0.4

AUC = 0.98695% CI (0.958–0.997)

AUC = 0.91395% CI (0.866–0.968)

AUC = 0.98895% CI (0.962–0.998)

1-speci�city

Sens

itivi

ty

AFP + AFU + GGT-II + GPC3

AFP + GGT-II + GPC3 + HGF

AFP + AFU + GGT-II + HGF

0.6 0.8 1.0

0 0.2 0.41-speci�city

0.6 0.8 1.0

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0A

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

C

AUC = 0.98395% CI (0.954–0.996)

AFU + GGT-II + GPC3 + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0

D

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0B

Figure S2 The 4 arrangements of serum biomarkers in the combination model. The sensitivity and specificity represented by the red dots were shown in detail below. (A). AFP + AFU + GGT-II + GPC3 sensitivity: 92.6% and specificity: 99.4%; (B). AFP + AFU + GGT-II + HGF sensi-tivity: 92.6% and specificity: 98.3%; (C). AFP + GPC3 + GGT-II + HGF sensitivity, 77.8% and specificity: 94.9%; (D). AFU + GPC3 + GGT-II + HGF sensitivity; 88.9% and specificity: 100.0%.

Page 47: Diagnostic value of 5 serum biomarkers for hepatocellular

32 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

0 0.2 0.4

AUC = 0.98695% CI (0.959–0.997)

AUC = 0.83395% CI (0.774–0.881)

AUC = 0.91595% CI (0.868–0.950)

AUC = 0.98695% CI (0.959–0.997)

1-speci�city

Sens

itivi

ty

AFP + AFU + GGT-II

AFP + GGT-II + GPC3 AFP + GGT-II + HGF

AFP + AFU + GPC3

0.6 0.8 1.0

0 0.2 0.4

1-speci�city

0.6 0.8 1.0 0 0.2 0.4

1-speci�city

0.6 0.8 1.0

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0A

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0D

AUC = 0.97595% CI (0.943–0.992)

AFU + GGT-II + GPC3

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0G

AUC = 0.98395% CI (0.955–0.996)

AFU + GGT-II + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0H

AUC = 0.97495% CI (0.942–0.991)

AFU + GPC3 + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0I

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0E

AUC = 0.91495% CI (0.867–0.949)

AFP + GPC3 + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0F

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0B

AUC = 0.86895% CI (0.814–0.912)

GGT-II + GPC3 + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0C

Figure S3 The 3 arrangements of serum biomarkers in the combination model. The sensitivity and specificity represented by the red dots are shown in detail below. (A). AFP + AFU + GGT-II sensitivity: 92.6% and specificity: 100.0%; (B). AFP + AFU + GPC3 sensitivity: 92.6% and specificity: 98.9%; (C). GGT-II + GPC3 + HGF sensitivity: 74.1% and specificity: 89.1%; (D). AFP + GGT-II + GPC3 sensitivity: 63.0% and specificity: 98.3%; (E). AFP + GGT-II + HGF sensitivity: 77.8% and specificity: 94.9%; (F). AFP + GPC3 + HGF sensitivity: 77.8% and specificity: 95.4%; (G). AFU + GGT-II + GPC3 sensitivity: 88.9% and specificity: 100.0%; (H). AFU + GGT-II + HGF sensitivity: 88.9% and specificity: 98.9%; (I). AFU + GPC3 + HGF sensitivity: 85.2% and specificity: 97.7%.

Page 48: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 33

0 0.2 0.4

AUC = 0.82695% CI (0.767–0.876)

AUC = 0.91695% CI (0.868–0.950)

AUC = 0.97595% CI (0.943–0.992)

AUC = 0.83895% CI (0.780–0.886)

1-speci�city

Sens

itivi

ty

AFP + GGT-II

AFP + HGF AFU + GGT-II

AFP + GPC3

0.6 0.8 1.0

0 0.2 0.4

1-speci�city

0.6 0.8 1.0 0 0.2 0.4

1-speci�city

0.6 0.8 1.0

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0A

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0D

AUC = 0.97495% CI (0.942–0.991)

AFU + HGF

0 0.2 0.41-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0G

AUC = 0.83695% CI (0.777–0.884)

GGT-II + GPC3

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0H

AUC = 0.86895% CI (0.814–0.912)

GGT-II + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0I

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0E

AUC = 0.96695% CI (0.931–0.986)

AFU + GPC3

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0F

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0B

AUC = 0.76595% CI (0.700–0.822)

GPC3 + HGF

0 0.2 0.4

1-speci�city

0.6 0.8 1.0

Sens

itivi

ty

0.2

0

0.4

0.6

0.8

1.0C

Figure S4 The 2 arrangements of serum biomarkers in the combination model. The sensitivity and specificity represented by the red dots are shown in detail below. (A). AFP + GGT-II sensitivity: 63.0% and specificity: 98.3%; (B). AFP + GPC3 sensitivity: 59.3% and specificity: 98.3%; (C). GPC3 + HGF sensitivity: 59.3% and specificity: 83.4%; (D). AFP + HGF sensitivity: 77.8% and specificity: 94.9%; (E). AFU + GGT-II sensitivity: 88.9% and specificity: 100.0%; (F). AFU + GPC3 sensitivity: 85.2% and specificity: 98.9%; (G). AFU + HGF sensitivity: 88.9% and specificity: 94.9%; (H). GGT-II + GPC3 sensitivity: 81.5% and specificity: 72.5%; (I). GGT-II + HGF sensitivity: 74.1% and specificity: 87.4%.

Page 49: Diagnostic value of 5 serum biomarkers for hepatocellular

34 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

0 0.2 0.4

AUC = 0.70795% CI (0.639–0.769)

AUC = 0.96995% CI (0.934–0.988)

1-speci�city

Sens

itivi

ty

AFP

0.6 0.8 1.0

0 0.2 0.41-speci�city

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0A

Sens

itivi

ty

0.2

0

0.4

0.6

AFP + AFU

0.8

1.0C

0 0.2 0.4

AUC = 0.94895% CI (0.907–0.974)

1-speci�city

Sens

itivi

ty

AFU

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0B

Figure S5 The receiver operating characteristic curves of AFP (A) AFU (B) and AFP + AFU (C) in the detection of the NBNC-HCC validation group. The sensitivity and specificity represented by the red dots are shown in detail below. (A). AFP sensitivity: 51.9% and specificity: 97.7%; (B). AFU sensitivity: 74.1% and specificity: 96.5%; (C). AFP + AFU sensitivity: 88.9% and specificity: 94.8%.

Page 50: Diagnostic value of 5 serum biomarkers for hepatocellular

Cancer Biol Med Vol 18, No 1 February 2021 35

0 0.2 0.4

AUC = 0.80995% CI (0.755–0.855)

1-speci�city

Sens

itivi

ty

AFP

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0

A

0 0.2 0.4

AUC = 0.75895% CI (0.693–0.816)

1-speci�city

Sens

itivi

ty

AFP

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0C

0 0.2 0.4

AUC = 0.84195% CI (0.790–0.884)

1-speci�city

Sens

itivi

ty

AFP + AFU

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0E

0 0.2 0.4

AUC = 0.79195% CI (0.728–0.845)

1-speci�city

Sens

itivi

ty

AFP + AFU

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0F

0 0.2 0.4

AUC = 0.67195% CI (0.602–0.736)

1-speci�city

Sens

itivi

ty

AFU

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0D

0 0.2 0.4

AUC = 0.72795% CI (0.668–0.781)

1-speci�city

Sens

itivi

ty

AFU

0.6 0.8 1.0

0.2

0

0.4

0.6

0.8

1.0

B

Figure S6 The serum biomarkers AFP, AFU, and combination model of all-stage and early-stage hepatitis-hepatocellular carcinoma (HCC) in the validation cohort. (A), (B), and (E) show the AFP, AFU, and the combination model of all-stage hepatitis-HCC; (C), (D), and (F) show AFP, AFU, and the combination model of early-stage hepatitis-HCC. The sensitivity and specificity represented by the red dots are shown in detail below. (A). AFP sensitivity: 62.8% and specificity: 90.2%; (B). AFU sensitivity: 69.4% and specificity: 65.4%; (C). AFP sensitivity: 52.2% and speci-ficity: 90.2%; (D). AFU sensitivity: 56.5% and specificity: 65.4%; (E). AFP + AFU sensitivity: 71.9% and specificity: 86.5%; (F). AFP + AFU sensitivity: 75.4% and specificity: 73.7%.

Page 51: Diagnostic value of 5 serum biomarkers for hepatocellular

36 Liu et al. Serum biomarkers for HCC with different epidemiological backgrounds

0.0

0 20 40

AFU expression AFU expression

TCGA datasets-overall survival

IHC data-overall survival IHC data-overall survivalIHC data-diseasefree survival IHC data-diseasefree survival

TCGA datasets-overall survivalA

E F G H

B C DTCGA datasets-diseasefree survival TCGA datasets-diseasefree survival

LowHigh

AFU expressionLowHigh

AFU expression

LowHigh

LowHigh

AFP/AFU expressionLowHigh

AFP/AFU expressionLowHigh

AFP/AFUexpression

LowHigh

AFP/AFU expressionLowHigh

60Time (month)

Surv

ival

rate

Number at risk

Number at risk

Number at risk Number at riskLow 265 208 245142 83 134 58 29 13 4 064 33 37 17 616 5 1

99 108 119 48 26 13 6 2 140 22 10 3 121

1020 9 3 1 0High

Low 78 73 52 35 6104 63

4932

3522

2814

41

7810437 21 5

00High

Number at riskLowHigh

9442

6227

3917

65

00

11270

00

Number at riskLowHigh

5823

4215

3210

41

00

11270

Number at riskLowHigh

LowHigh

LowHigh

80 100

HR = 1.78 (1.24–2.56)

logrank P = 0.0014

HR = 2.319 (1.603–3.355)

logrank P < 0.0001

HR = 2.309 (1.630–3.271)

logrank P < 0.0001

HR = 1.609 (1.131–2.289)

logrank P = 0.007

HR = 1.831 (1.309–2.562)

logrank P < 0.0001

HR = 1.95 (1.40–2.73)

logrank P = 6.6e–05

HR = 1.66 (1.17–2.36)

logrank P = 0.004

HR = 1.55 (1.12–2.16)

logrank P = 0.0083

120

0 20 40 60Time (month)

80 100 0 20 40 60Time (month)

80 100 0 20 40 60Time (month)

80 100 0 20 40 60Time (month)

80 100

0 20 40 60Time (month) Time (month)

80 100 120 0 20 40 60 80 100 120Time (month)

0 20 40 60 80 100 120

0.2

0.4

0.6

0.8

1.0

0.0

Surv

ival

rate

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

Number at risk176 70 31 11 3 1 0140 35 16 9 4 2 1

LowHigh

Figure S7 The AFU and AFP/AFU combination model for predicting hepatocellular carcinoma (HCC) prognosis. (A), (B) The survival curves [overall survival (OS) and disease-free survival (DFS)] of HCC patients with different expressions of AFU based on The Cancer Genome Atlas (TCGA) database. (C), (D) The survival curves (OS and DFS) of HCC patients with different expressions of AFP/AFU based on TCGA database. (E), (F) The survival curves (OS and DFS) of HCC patients with different expressions of AFU based on our immunohistochemistry (IHC) data. (G), (H) The survival curves (OS and DFS) of HCC patients with different expressions of AFP/AFU based on our IHC data.