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Nonstandard Exception Requests Impact Outcomes for Pediatric Liver Transplant Candidates
H J Braun1, E R Perito2,3, J L Dodge4
1School of Medicine, University of California, San Francisco, San Francisco, CA.
Summary
Nonstandard exceptions requests (NSERs) for pediatric liver transplants significantly impact waitlist mortality for children aged 2-18. NSER denial increases mortality risk, highlighting the need for optimized organ allocation strategies.
Area of Science:
- Transplantation Medicine
- Pediatric Hepatology
- Organ Allocation
Background:
- Nonstandard exceptions requests (NSERs) are frequently used for pediatric liver transplant candidates.
- These requests allow transplant centers to appeal for additional points for candidates on the waitlist.
- The impact of NSER outcomes on patient survival and graft success requires thorough investigation.
Purpose of the Study:
- To evaluate the association between NSER outcomes and waitlist mortality in pediatric liver transplant candidates.
- To assess the impact of NSERs on post-transplant outcomes, including graft loss and mortality.
- To determine if NSER approval or denial influences the survival of pediatric liver transplant recipients.
Main Methods:
- Analysis of data from the United Network for Organ Sharing (UNOS) Scientific Registry of Transplant Recipients.
- Inclusion of pediatric liver transplant candidates listed between 2009 and 2014.
- Exclusion of candidates who received automatic UNOS exceptions, focusing on NSERs.
Main Results:
- NSER denial increased waitlist mortality or removal risk by 2.99 times in children aged 2-18 years.
- NSER denial was associated with a higher risk of post-transplant death (hazard ratio 2.43).
- NSER approval showed a trend towards reduced graft loss in univariate analysis, but this was not significant in multivariable analysis.
Conclusions:
- NSER denial significantly elevates waitlist mortality risk for older pediatric liver transplant candidates.
- The findings suggest NSERs play a critical role in organ allocation for pediatric liver transplantation.
- Further research is essential to refine NSER utilization for optimizing outcomes in pediatric liver transplant recipients.
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