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INMUNOTERAPIA EN CANCER DE PULMON Tratamiento de Primera Línea
Noemí Reguart, MD, PhDH. Clínic de Barcelona
Desafio Oncologico: mas alla del genoma
X Desafío Oncológico (Valencia, 03 y 04 diciembre)
Disclosure Information
❑ Consultant or Advisory Role: Merck Sharp and Dohme, Roche, Boehringer Ingelheim, Pfizer, Takeda, Novartis, Astra-Zeneca, Lilly
❑ Research Funding: Pfizer, Novartis
❑ Speaking: Merck Sharp and Dohme, Roche, Boehringer Ingelheim, Pfizer, Takeda, Novartis, Astra-Zeneca
❑ Other: Institutional financial interests: those related to clinical trials and patient recruitment
FIGURE 2. Stage IV NSCLC (no targetable alterations)
PS 0-1 PS 2 PS 3-4
1st
line
PD-L1< 50%PD-L1≥ 50%
SCC and non-SCC
Pembrolizumab (I,A)(*)
CT, chemotherapy; SCC, squamous; BSC, best supportive care(*) combination of immunotherapy + CT may be considered#
# Not EMA approved
non-SCC
Platinum+Pemetrexed (II,A)Taxol+CBDCA+Bevacizumab (I,A)Paclitaxel+CBDCA+Bev+Atezolizumab# (I,A)Platinum+Pemetrexed+Pembrolizumab (I,A)Platinum+Pemetrexed+Atezolizumab# (I,B)
Platinum based-CT (I,A)Platinum+Taxane+Pembrolizumab# (I,A)Platinum+Taxane+Atezolizumab# (I,B)
SCCSingle agent CT (I,B)Carboplatin-based
CT (II,A)
BSC (II,B)
SEOM: Current linical Practice Guidelines
Magem M, CTO 2018
Chemo/I-O Chemo/I-O I-O
IO (alone/combination) is a new standard of care in 1L
Martínez et al. Clin Cancer Res January 14 2019
Nonsquamous, Ch alone vs Ch-IO
Squamous, Ch alone vs Ch-IO
Sq and nonsq, Ch alone vs IO alone
First Line IO, IO-IO, NO chemo
1. KN-024, Reck M WCLC 2019, NEJM 2016; 2. IMpower110 Spigel D et al. Oral presentation at ESMO 2019; 3. KN 042, Mok ELCC 2019, Lancet 2019; 4. CM 227,
Peters, ESMO 2019, NEJM 2019
CM-2274
KN-042 (≥1%)
KN-024 (≥50%) IMpower 110 (TC3 & IC3)
Median follow-up 29 months
Median follow-up 43 months
Median follow-up 12.8 months
First Line IO plus Chemo: by histology, PD-L1 all comer
1. KN-189: Gadgeel S.M, ASCO 2019. Gandhi NEJM 2018 ; 2. IMPower 150 Socinski. MA. ASCO 2018, NEJM 2018; 3. KN-407 Paz Ares ESMO 2019, NEJM 2018;
4. IMpower 132 Papadimitrakopoulou V.A., WCLC 2018; 5. IMpower 130, Capuzzo ESMO 2018, West H. Lancet 2019; 6. IMpower 131 Jotte R, WCLC 2019
IMpower 131* (arm B, C)
KN-407
Non-Sq NSCLC Sq NSCLC
platinum (cis/carbo)-pemetrex CBCDA-taxol-beva
platinum (cis/carbo)-pemetrex CBCDA-nabpac CBCDA-nabpac
CBCDA-taxol/nabpac
The ‘quatriplets’ come into play: I-O plus I-O plus Chemo
Press Release 28 Oct 2019
Press Release 22 Oct 2019
PD-L1 expression enriches for IO responses
Hellmann, Lancet Oncol 2017
TPS < 1% TPS 1-49% TPS ≥50%
IHC Images from Teixidó C, Reguart N
CM 057 KN-010 CM 012
H. Borghaei, NEJM 2015 Roy S Herbst , Lancet 2016
OS by PD-L1 status difficult to interpret across trials
TC or TC & IC?
Defining subgroups based on Predictive BiomarkersDriver oncogenes and PD-L1 TPS expression
Camidge R, Nat Rev Clin Oncol 2019
Categorical versus continuous variables No PD-L1 level either guarantees or excludesI-O benefit!!
70%PD-L1
positive
30%PD-L1
negative 3% responders PD-L1 negative
17% responders PD-L1 positive
Treatment-naïve NSCLC
SquamousNon-squamous
No Targetable
Alterations
PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49% PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49%
KEYNOTE-4077
KEYNOTE-0423
IMpower1102 IMpower1102
IMpower 150*/1304/1325
*In patients with EGFR-mutant or ALK-positive NSCLC, atezolizumab, in combination with bevacizumab, paclitaxel, and carboplatin, is indicated in the EU after failure of appropriatetargeted therapies.1 1. Reck et al. WCLC 2019. 2. Spigel D et al. ESMO 2019. 3. Mok et al. ELCC 2019. 4. Roche [press release]. September 6, 2019. 5. Barlesi F et al. Oralpresentation at ESMO 2018. LBA54. 6 Gadgeel S et al. Oral presentation at ASCO 2019. 7 Paz-Ares L et al. Oral presentation at ASCO 2018. 8 BMS [press release]. October 22, 2019.9. Peters S et al. ESMO 2019; 10 Cappuzzo F et al. WCLC 2019, Socinsky et al ESMO 2019
CheckMate 2279 CheckMate 2279
KEYNOTE-0241
KEYNOTE-1896
KEYNOTE-0241
KEYNOTE-0423
First Line Phase III I-O trials design based on PD-L1 TPS
IMpower13110
I-O
Mono
I-O I-O
I-O
Chemo
First-Line Therapy in PD-L1≥50%
Pembrolizumab monotherapy
undisputed first choice?
1
Treatment-naïve NSCLC
SquamousNon-squamous
No Targetable
Alterations
PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49% PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49%
KEYNOTE-4077
KEYNOTE-0423
IMpower1102 IMpower1102
IMpower 150*/1304/1325
*In patients with EGFR-mutant or ALK-positive NSCLC, atezolizumab, in combination with bevacizumab, paclitaxel, and carboplatin, is indicated in the EU after failure of appropriatetargeted therapies.1 1. Reck et al. WCLC 2019. 2. Spigel D et al. ESMO 2019. 3. Mok et al. ELCC 2019. 4. Roche [press release]. September 6, 2019. 5. Barlesi F et al. Oralpresentation at ESMO 2018. LBA54. 6 Gadgeel S et al. Oral presentation at ASCO 2019. 7 Paz-Ares L et al. Oral presentation at ASCO 2018. 8 BMS [press release]. October 22,2019. 9. Peters S et al. ESMO 2019; 10 Cappuzzo F et al. WCLC 2019, Socinsky et al ESMO 2019
CheckMate 2279 CheckMate 2279
KEYNOTE-0241
KEYNOTE-1896
KEYNOTE-0241
KEYNOTE-0423
First Line Phase III I-O trials design based on PD-L1 TPS
IMpower13110
I-O
Mono
I-O I-O
I-O
Chemo
I-O monotherapy in PD-L1≥50%
KEYNOTE-024
OS in PD-L1≥50%,WT NSQ-SQ1
KEYNOTE-042
OS in PD-L1≥50%, WT NSQ-SQ2
1- Reck et al. WCLC 2019; OA 14.012. Mok TSK et al. Oral presentation at ELCC 2019. 102O.
3. Spigel D et al. Oral presentation at ESMO 2019. LBA78. .
IMpower110
OS in TC3/IC3, WT NSQ-SQ3
20
Overall Survival
26.3 mo14.2 mo 20.0 mo12.2 mo 20.2 mo13.1 mo
Outcomes to 1st L pembrolizumab in patients with very high PD-L1 expression
Aguilar, Annals of Oncology 2019
n= 187
Edward B. Garon; ASCO 2019 (suppl; abstr LBA9015)
TPS ≥ 50% mOS 35.4 mo
5y 29.6%
Among Patients Who Received
≥2y of Pembrolizumab (11%)
5y OS 78.6%
Long Term Outcomes (5y)
Treatment Naive Patients
PD-L1 ≥50% and 1%–49%
I-O MONOTHERAPY IN PD-L1≥50%
Reck M, WCLC 2019
38/154 (24%) completed 35 cycles
ORR 82%
DoR ≥24 mo 25/38 (81%)
Long-Term responders and durable benefit with
pembrolizumab
1. Kurata T et al. JSMO Annual Meeting 2019. Kyoto, Japan. 2. Paz-Ares L et al. Oral presentation at ASCO 2018. 105.
3. Socinski MA et al. Oral presentation at ASCO 2018. 90024. Jotte, Oral presentation at WCLC 2019
.
I-O plus Chemo in PD-L1≥50%
23.6%
14.1%
67%
52%
23.4 mo10.2 mo22.0 mo10.7 mo
PFS2 after first line with Pembro mono or chemo-combo in PD-L1≥50%
KEYNOTE-189:
PFS2 in TPS≥ 50%platinum (cis/carbo)-pemetrexed (x4) +/- pembro
Gadgeel S et al. Oral presentation at ASCO 2019
KEYNOTE-024:
PFS2 in TPS≥ 50%platinum (cis/carbo)-pemetrexed (x4) +/- pembro
Brahmer JR, ASCO 2017
crossover64%
crossover50%
CheckMate 227 Part 1 Study Designa
N = 1189
PD-L1expression
< 1%
N = 550
NIVO + (low-dose) IPIb
n = 396
Chemoc
n = 397
NIVOd
n = 396
NIVO + (low-dose) IPIb
n = 187
Chemoc
n = 186
NIVOe + chemoc
n = 177
R1:1:1Key Eligibility Criteria
• Stage IV or recurrent NSCLC• No prior systemic therapy• No sensitizing EGFR mutations or
known ALK alterations• No untreated CNS metastases • ECOG PS 0–1
Stratified by SQ vs NSQR
1:1:1
Database lock: July 2, 2019; minimum follow-up for primary endpoint: 29.3 monthsaNCT02477826; bNIVO (3 mg/kg Q2W) + IPI (1 mg/kg Q6W); cNSQ: pemetrexed + cisplatin or carboplatin, Q3W for ≤ 4 cycles, with optional pemetrexed maintenance following chemo or NIVO + pemetrexedmaintenance following NIVO + chemo; SQ: gemcitabine + cisplatin, or gemcitabine + carboplatin, Q3W for ≤ 4 cycles; dNIVO (240 mg Q2W); eNIVO (360 mg Q3W); fTMB primary endpoint analysis conducted at January 24, 2018 database lock in subset of patients randomized to NIVO + IPI or chemo; alpha allocated was 0.025; gAlpha allocated was 0.025 overall (0.023 for final analysis)
PD-L1expression
≥ 1%
Part 1b
Part 1a
Treatment until disease progression, unacceptable toxicity, or for 2 years
for immunotherapy
Secondary endpoints (PD-L1 hierarchy):• PFS: NIVO + chemo vs chemo in PD-L1 < 1%
• OS: NIVO + chemo vs chemo in PD-L1 < 1%
• OS: NIVO vs chemo in PD-L1 ≥ 50%
Independent co-primary endpoints: NIVO + IPI vs chemo
• PFS in high TMB (≥10 mut/Mb) populationf
• OS in PD-L1 ≥ 1% populationg
I-O + I-O in PD-L1≥50%
CM227 Peters et al. ESMO 2019
Efficacy With NIVO + IPI and NIVO vs Chemo in Patients With Tumor PD-L1 Expression ≥ 50%
22
NIVO + IPI
Chemo
NIVO
Part 1a
PFS by BICR ORR by BICR OS
Dosages were NIVO (3 mg/kg Q2W) plus IPI (1 mg/kg Q6W), and NIVO (360 mg Q3W) plus chemo.
0
10
20
30
40
50
NIVO + IPI NIVO Chemo
OR
R (
%)
n / N:
44.4
36.98.8
35.6
2.1
33.3
4.7
32.2
35.4
PR
CR
6 12 18 24 30 36 423 9 15 21 27 33 39
OS
(%
)
00 45
100
80
60
40
20
Months
54%
67%
61%P
FS
(%
)
00 39
100
80
60
40
20
Months
6 12 18 24 30 363 9 15 21 27 33
15%
41%34%
NIVO + IPI
NIVO + IPI
NIVO
NIVO
Chemo
Chemo
NIVO + IPI(n = 205)
NIVO(n = 214)
Chemo(n = 192)
Median OS, mo95% CI
21.2 15.5–38.2
18.114.4–22.1
14.0 10.0–18.6
HR (vs chemo)95% CI
0.700.55–0.90
0.790.63–1.01
NIVO + IPI(n = 205)
NIVO(n = 214)
Chemo(n = 192)
Median PFS, mo95% CI
6.74.5–11.0
5.64.2–8.3
5.6 4.6–6.6
HR (vs chemo)95% CI
0.620.49–0.79
0.750.59–0.95
36%
48%
42 %
5%
31%20%
NIVO + IPI NIVO Chemo
79 / 214 68 / 19291 / 205
• Median DOR with NIVO + IPI, NIVO and chemo was 31.8, 17.5 and 5.8 months, respectively
CM227 Peters et al. ESMO 2019
CheckMate 227 Part 1: NIVO + IPI in 1L NSCLC
Most Frequent TRAEs (≥ 15%) With NIVO + IPI and NIVO + Chemo in Patients With Tumor PD-L1 Expression < 1%a
Dosages were NIVO (3 mg/kg Q2W) plus IPI (1 mg/kg Q6W), and NIVO (360 mg Q3W) plus chemo.aIncludes events reported between first dose and 30 days after last dose of study drug.
Vomiting
Neutropenia
Decreased appetite
Rash
Decreased neutrophil count
50%50%Patients (%)
NIVO + IPI (n = 185) NIVO + chemo (n = 172)
40% 30% 20% 10% 0 10% 20% 30% 40%
Grade 1–2
Grade 3–4
Grade 1–2
Grade 3–4
Nausea
Anemia
Fatigue
Diarrhea
Constipation
23
CheckMate 227 Part 1: NIVO + IPI in 1L NSCLC
Rek M, arassino MC, AACR 2019
Outcomes by histology
KEYNOTE-024
CM227 Peters et al. ESMO 2019
CM 227
Do we need to Boost I-O in PD-L1–high expressors?
advantage
7. Paz-Ares L et al. N Engl J Med. 2018;379:2040-2051 [supplementary appendix].
*Treatment-related adverse events. †ITT population. ‡All CRs are from the PD-L1 TPS 1–49% population. §All-cause adverse events. ∥Any-cause adverse events.1. Brahmer JR et al. Oral presentation at WCLC 2017. OA17.06. 2. Mok TSK et al. Oral presentation at ELCC 2019. 102O. 3. Gadgeel S et al. Oral presentation at ASCO 2019.336. 4. Gandhi L et al. Oral presentation at AACR 2018. CT075. 5. Paz-Ares L et al. N Engl J Med. 2018;379:2040-2051. 6. Paz-Ares L et al. Oral presentation at ASCO 2018.105.
22
First-Line Therapy in PD-L1 <1%
Is there an optimum I-O
combination?
2
Treatment-naïve NSCLC
SquamousNon-squamous
No Targetable
Alterations
PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49% PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49%
KEYNOTE-4077
KEYNOTE-0423
IMpower1102 IMpower1102
IMpower 150*/1304/1325
*In patients with EGFR-mutant or ALK-positive NSCLC, atezolizumab, in combination with bevacizumab, paclitaxel, and carboplatin, is indicated in the EU after failure of appropriatetargeted therapies.1 1. Reck et al. WCLC 2019. 2. Spigel D et al. ESMO 2019. 3. Mok et al. ELCC 2019. 4. Roche [press release]. September 6, 2019. 5. Barlesi F et al. Oralpresentation at ESMO 2018. LBA54. 6 Gadgeel S et al. Oral presentation at ASCO 2019. 7 Paz-Ares L et al. Oral presentation at ASCO 2018. 8 BMS [press release]. October 22, 2019.9. Peters S et al. ESMO 2019; 10 Cappuzzo F et al. WCLC 2019, Socinsky et al ESMO 2019
CheckMate 2279 CheckMate 2279
KEYNOTE-0241
KEYNOTE-1896
KEYNOTE-0241
KEYNOTE-0423
First Line Phase III I-O trials design based on PD-L1 TPS
IMpower13110
I-O
Mono
I-O I-O
I-O
Chemo
I-O + Chemo in PD-L1–negative
1. Kurata T et al. JSMO Annual Meeting 2019. Kyoto, Japan; 2. Socinski MA et al. Oral presentation at ASCO 2018. 9002; 3. Paz-Ares L et al. Oral presentation at ASCO 2018. 105. 4 Jotte R, WCLC 2019.
IMpower 131:
OS in PD-L1 TC0/IC0,SQ4
12.5 mo 14.0 mo
Non-Sq NSCLC Sq NSCLC
Boosting I-O in Patients With Tumor PD-L1–negative
Borghaei H, WCLC 2019
Pooled KN021G, KN189, KN047: I-O plus CHEMO KEYNOTE 227: CHEMO-SPARING
Median 19 months Median 17 months
CM227 Peters et al. ESMO 2019
31
ORR and DOR for NIVO + IPI and NIVO + Chemo vs Chemo in Patients With Tumor PD-L1 Expression < 1%
0
10
20
30
40
Nivo + Ipi Nivo Chemo
ORR by BICR
OR
R (
%)
51 / 187n / N: 67 / 177
27.3
37.9 PR
CR
2.1
25.1
1.1
22.036.2
23.1
NIVO + chemo
43 / 186
ChemoNIVO + IPI
DOR by BICRa
Dosages were NIVO (3 mg/kg Q2W) + IPI (1 mg/kg Q6W), and NIVO (360 mg Q3W) plus chemo.aMedian time to response was 2.8 mo with NIVO + IPI, 1.7 mo with NIVO + chemo, and 1.5 mo with chemo.
NIVO + IPI(n = 51)
NIVO + chemo(n = 67)
Chemo(n = 43)
Median DOR, mo95% CI
18.0 12.4–28.6
8.35.9–9.4
4.8 3.7–5.81.7
NIVO + chemo
100
80
Months
60
40
20
00 3 6 9 12 21 2415 18 27 30 33 36
No. at riskNIVO + IPI 51 45 37 32 28 16 1524 19 12 6 4 0
Chemo 43 29 11 9 9 2 15 3 0 0 0 067 59 40 26 19 10 713 11 7 4 1 0
Pati
en
ts i
n r
esp
on
se (
%)
NIVO + chemo
Chemo
NIVO + IPI
NIVO + IPI
Chemo
NIVO + chemo
Part 1b
25%
71%
32%
5%
40%
16%
CM227 Peters et al. ESMO 2019
median 18 months
First-Line Therapy in PD-L1
low 1-49%
Is there an optimum I-O
combination?
3
Treatment-naïve NSCLC
SquamousNon-squamous
No Targetable
Alterations
PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49% PD-L1 <1% PD-L1 ≥50%PD-L1 1%–49%
KEYNOTE-4077
KEYNOTE-0423
IMpower1102 IMpower1102
IMpower 150*/1304/1325
*In patients with EGFR-mutant or ALK-positive NSCLC, atezolizumab, in combination with bevacizumab, paclitaxel, and carboplatin, is indicated in the EU after failure of appropriatetargeted therapies.1 1. Reck et al. WCLC 2019. 2. Spigel D et al. ESMO 2019. 3. Mok et al. ELCC 2019. 4. Roche [press release]. September 6, 2019. 5. Barlesi F et al. Oralpresentation at ESMO 2018. LBA54. 6 Gadgeel S et al. Oral presentation at ASCO 2019. 7 Paz-Ares L et al. Oral presentation at ASCO 2018. 8 BMS [press release]. October 22, 2019.9. Peters S et al. ESMO 2019; 10 Cappuzzo F et al. WCLC 2019, Socinsky et al ESMO 2019
CheckMate 2279 CheckMate 2279
KEYNOTE-0241
KEYNOTE-1896
KEYNOTE-0241
KEYNOTE-0423
First Line Phase III I-O trials design based on PD-L1 TPS
IMpower13110
I-O
Mono
I-O I-O
I-O
Chemo
Median (95% CI)
16.4 mo (14.0-19.7)
12.1 mo (11.3-13.3)
Median (95% CI)
13.4 mo (10.7-16.9)
12.1 mo (11.0-14.0)
34%
27%
0 6 18 24
Months
36 48423012
100
90
80
70
60
50
40
30
20
10
0
OS
, %
0 6 18 24
Months
36 48423012
39%
28%
100
90
80
70
60
50
40
30
20
10
0
OS
, %
HR (95% CI)
Pembrolizumab 0.82
(0.71-0.93)Chemotherapy
HR (95% CI)
Pembrolizumab 0.91
(0.77-1.09)Chemotherapy
No. at risk No. at risk
Pembro 637 463 368 304 178 91 30 1 0 Pembro 338 239 178 147 84 41 9 0 0
Chemo 637 485 319 236 126 65 20 2 0 Chemo 337 254 168 123 67 34 12 0 0
Mok TSK et al. Oral presentation at ELCC 2019. 102O.
Pembro mono in PD-L1> 1% & 1-49%: Enough?
KEYNOTE-042
OS in PD-L1≥1%
KEYNOTE-042
OS in PD-L1 1-49%
1. Kurata T et al. JSMO Annual Meeting 2019. Kyoto, Japan.
2. Socinski MA et al. Oral presentation at ASCO 2018. 9002
Pembro plus Chemo in PD-L1 1-49% non-SQ NSCLC
KEYNOTE-189:
OS in TPS 1-49%platinum (cis/carbo)-pemetrexed (x4) +/- pembro
IMpower 150:
OS in PD-L1 Low (TC1/2 or IC1/2) carbo-taxol+/-bevacizumab (x 4-6 cycles) +/- atezo
PD-L1–LowTC1/2 or IC1/2
HRa, 0.80 (95% CI: 0.55, 1.15)
16.4 mo 20.3 mo
HR 0.62 (95% CI 0.42–0.92)HRa, 0.62
(95% CI: 0.42, 0.92)
1. Paz-Ares LG, ASCO 2018; 2. Jotte R, WCLC 2019
Pembro plus Chemo in PD-L1 1-49% SQ-NSCLC
KEYNOTE-4071:
OS in TPS 1-49%carbo-taxol or nabpac (x 4) +/- pembro
IMpower 131 (arm B, C)2:
OS in PD-L1 Low (TC1/2 or IC1/2)
carbo-nabpac (x 4-6) +/- atezo
12.8 mo 15.5 mo14.0 mo11.6 mo
Paz-Ares LG, ASCO 2018
First-Line Therapy in special
subgroups (liver metastases,
driver oncogenes)
4
Atezolizumab + BCP vs BCP Alone
HR: 0.54 (95% CI: 0.29-1.03)
ABCP BCP
Median OS, mos NE 17.5
Mos
OS
(%)
100908070605040302010
0300 2 4 6 8 10 12 14 16 18 20 22 24 26 28
Patients at Risk, nAtezo + Bev + CP
Bev + CP4163
3961
3757
3749
3546
3239
3037
2028
1524
1117
912
511
47
22
Socinski. ASCO 2018. Abstr 9002.
Atezolizumab + CP vs BCP Alone
HR: 0.82(95% CI: 0.49-1.37)
Mos
OS
(%)
100908070605040302010
0300 2 4 6 8 10 12 14 16 18 20 22 24 26 28
Patients at Risk, nAtezo + CP
Bev + CP5363
5161
5057
4849
4646
4139
3737
2428
2224
2017
1612
1311
87
62
17.5 mos 21.2 mos
4
Atezo + CPBev + CP
Special subgroups: EGFR/ALK+ After Prior Targeted Therapy, IMpower150
Socinski MA, ASCO Meeting 2018, abstr 9002.; NEJM 2018
Reck M, The Lancet 2019
Special subgroups: Liver metastasis, IMpower150
Garassino MC, AACR 2019
Special subgroups: Liver metastasis
KEYNOTE-189
CM227 Peters et al. ESMO 2019
CM 227
My decision-making algorithm for I-O
• I-O is a new SoC in first-line advanced NSCLC without drivers
• TPS PD-L1 remains the CORE I-O Biomarker
• WHEN can we spare I-O? ONLY if contraindications (severe autoimmunediseases, steroids, IS) or patients with poor PS ≥ 2
• Do we need to BOOST in PD-L1 ≥50%? Probably NOT
• WHEN do we need to BOOST I-O? if PD-L1< 50%, specially in PD-L1 <1%
• How do we BOOST I-O? Chemo (PD-L1< 50%) or anti-CTLA4 (PD-L1 <1%)
Thank you!! [email protected]