PMID- 37637234 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230829 IS - 2590-017X (Electronic) IS - 2666-2345 (Print) IS - 2590-017X (Linking) VI - 6 IP - 3 DP - 2023 Aug TI - Autoimmune HLA Alleles and Neoepitope Presentation Predict Post-Allogenic Transplant Relapse. PG - 127-132 LID - 10.36401/JIPO-22-19 [doi] AB - INTRODUCTION: Allogeneic hematopoietic stem cell transplantation (allo-HSCT) can cure patients with high-risk myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML). However, many patients relapse or develop debilitating graft-versus-host disease. Transplant restores T-cell reactivity against tumor cells, implicating patient human leukocyte antigen (HLA)-dependent antigen presentation via the major histocompatibility complex as a determinant of response. We sought to identify characteristics of the HLA genotype that influence response in allo-HSCT patients. METHODS: We collected HLA genotype and panel-based somatic mutation profiles for 55 patients with AML and MDS and available data treated at the University of California San Diego Moores Cancer Center between May 2012 and January 2019. We evaluated characteristics of the HLA genotype relative to relapse-free time and overall survival (OS) post-allo-HSCT using univariable and multivariable regression. RESULTS: In multivariable regression, the presence of an autoimmune allele was significantly associated with relapse-free time (hazard ratio [HR], 0.25; p = 0.01) and OS (HR, 0.16; p < 0.005). The better potential of the donor HLA type to present peptides harboring driver mutations trended toward better relapse-free survival (HR, 0.45; p = 0.07) and significantly correlated with longer OS (HR, 0.33; p = 0.01) though only a minority of cases had an HLA mismatch. CONCLUSION: In this single institution retrospective study of patients receiving allo-HSCT for relapsed AML/MDS, characteristics of an individual's HLA genotype (presence of an autoimmune allele and potential of the donor HLA to better present peptides representing driver mutations) were significantly associated with better outcomes. These findings suggest that HLA type may guide the optimal application of allo-HSCT and merit evaluation in larger cohorts. ClinicalTrials.gov Identifier: NCT02478931. FAU - Castro, Andrea AU - Castro A AUID- ORCID: 0000-0002-5873-2496 AD - Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, USA. AD - Division of Medical Genetics, Department of Medicine, University of California San Diego, La Jolla, CA, USA. FAU - Goodman, Aaron M AU - Goodman AM AD - Division of Blood and Marrow Transplantation, Department of Medicine, University of California San Diego, La Jolla, CA, USA. FAU - Rane, Zachary AU - Rane Z AD - School of Medicine, University of California San Diego, La Jolla, CA, USA. FAU - Talwar, James V AU - Talwar JV AD - Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, USA. AD - Division of Medical Genetics, Department of Medicine, University of California San Diego, La Jolla, CA, USA. FAU - Frampton, Garrett M AU - Frampton GM AD - Foundation Medicine, Cambridge, MA, USA. FAU - Morris, Gerald P AU - Morris GP AD - Department of Pathology, University of California San Diego, La Jolla, CA, USA. FAU - Lippman, Scott M AU - Lippman SM AD - School of Medicine, University of California San Diego, La Jolla, CA, USA. AD - Moores Cancer Center, University of California San Diego, La Jolla, CA, USA. FAU - Zhang, Xinlian AU - Zhang X AD - Division of Biostatistics and Bioinformatics, Herbert Wertheim School of Public Health, University of California San Diego, La Jolla, CA, USA. FAU - Kurzrock, Razelle AU - Kurzrock R AD - Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA. FAU - Carter, Hannah AU - Carter H AUID- ORCID: 0000-0002-1729-2463 AD - Division of Medical Genetics, Department of Medicine, University of California San Diego, La Jolla, CA, USA. AD - Moores Cancer Center, University of California San Diego, La Jolla, CA, USA. LA - eng SI - ClinicalTrials.gov/NCT02478931 PT - Journal Article DEP - 20230515 PL - United States TA - J Immunother Precis Oncol JT - Journal of immunotherapy and precision oncology JID - 101768397 PMC - PMC10448732 OTO - NOTNLM OT - HLA genotype OT - acute myeloid leukemia OT - allo-HSCT OT - neoantigen OT - relapse COIS- Conflict of Interest: Dr. Goodman is a consultant for Seattle Genetics. Garret Frampton is an employee of Foundation Medicine and a shareholder of Roche. Dr. Kurzrock has an equity interest in CureMatch Inc. and IDbyDNA; serves on the Board of CureMatch and CureMetrix, and is a co-founder of CureMatch. EDAT- 2023/08/28 06:43 MHDA- 2023/08/28 06:44 PMCR- 2023/05/15 CRDT- 2023/08/28 04:46 PHST- 2022/08/01 00:00 [received] PHST- 2022/12/20 00:00 [revised] PHST- 2023/03/20 00:00 [accepted] PHST- 2023/08/28 06:44 [medline] PHST- 2023/08/28 06:43 [pubmed] PHST- 2023/08/28 04:46 [entrez] PHST- 2023/05/15 00:00 [pmc-release] AID - 10.36401/JIPO-22-19 [doi] PST - epublish SO - J Immunother Precis Oncol. 2023 May 15;6(3):127-132. doi: 10.36401/JIPO-22-19. eCollection 2023 Aug.