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Proposal to Delay the HCC Exception Score Assignment. Liver and Intestinal Organ Transplantation Committee Spring 2014. The Problem. Candidates with HCC exceptions receive high priority on the waiting list Scores may increase automatically every three months - PowerPoint PPT Presentation
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Proposal to Delay the HCC Exception Score Assignment
Liver and Intestinal Organ Transplantation Committee Spring 2014
Candidates with HCC exceptions receive high priority on the waiting list Scores may increase automatically every three months Most patients treated (90%), many with stable tumors
HCC: Significantly lower dropout rates than non-HCC Exception: areas of the country with long waiting times These areas also have a built in “test for biology”
How to even out transplant rates for HCC vs non-HCC?
The Problem
Overall Dropout Rates for HCC and Non-HCC Candidates: Listed 4/14/04-12/31/07
0
5
10
15
20
25
0 100 200 300
% D
rop
ou
t
Days after Listing/Initial Application
HCC Non-HCC (MELD < 21) Non-HCC (all)N=14,839N=5002 N=20,923
p < 0.0001
Massie, et al:
Both HCC and other exceptions “were associated with decreased risk of waitlist mortality compared to non-exception patients with equivalent listing priority” p<0.001
The Problem (cont’d)
% Dropout within 12 Months: HCC and Non-HCC Candidates by RegionCandidates Added 7/1/08 – 6/30/11
The proposed solution will address the disparities in transplant/drop-out rates between patients with HCC exceptions and those without by delaying the HCC score assignment
Goal of the Proposal
Current Schedule
Proposed Schedule
Initial Score 22 Calculated MELD Score
First Extension (3 months) 25 Calculated MELD Score
Second Extn. (6 months) 28 28Remainder of schedule the same (29, 31, 33, etc.)
Additional Background
Currently, as long as the candidate meets criteria, the initial score assignment is 22, followed by increases every 3 months
LSAM modeling: delay led to similar transplant rates between HCC and non-HCCAt least in regions with lower waiting times
Study by Halazun, et al: Recipients with HCC exceptions have worse outcomes in regions with shorter waiting times “Biologic test” not met due to rapid transplantation
Supporting Evidence
Transplant Rates by HCC StatusLSAM Modeling Results
Understand changes in the score assignment
For HCC cases submitted as “Other, specify”: will be monitored by the Committee
What Members will Need to Do
David C. Mulligan, MD Committee Chair
Name Region # Representative Email
Committee Liaison
Questions?
