PMID- 35833513 OWN - NLM STAT- MEDLINE DCOM- 20230913 LR - 20231006 IS - 1541-0420 (Electronic) IS - 0006-341X (Print) IS - 0006-341X (Linking) VI - 79 IP - 3 DP - 2023 Sep TI - Prioritizing candidate peptides for cancer vaccines through predicting peptide presentation by HLA-I proteins. PG - 2664-2676 LID - 10.1111/biom.13717 [doi] AB - Cancer (treatment) vaccines that are made of neoantigens, or peptides unique to tumor cells due to somatic mutations, have emerged as a promising method to reinvigorate the immune response against cancer. A key step to prioritizing neoantigens for cancer vaccines is computationally predicting which neoantigens are presented on the cell surface by a human leukocyte antigen (HLA). We propose to address this challenge by training a neural network using mass spectrometry (MS) data composed of peptides presented by at least one of several HLAs of a subject. We embed the neural network within a mixture model and train the neural network by maximizing the likelihood of the mixture model. After evaluating our method using data sets where the peptide presentation status was known, we applied it to analyze somatic mutations of 60 melanoma patients and identified a group of neoantigens more immunogenic in tumor cells than in normal cells. Moreover, neoantigen burden estimated by our method was significantly associated with a measurement of the immune system activity, suggesting these neoantigens could induce an immune response. CI - (c) 2022 The International Biometric Society. FAU - Zhou, Laura Y AU - Zhou LY AD - Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. FAU - Zou, Fei AU - Zou F AD - Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. FAU - Sun, Wei AU - Sun W AUID- ORCID: 0000-0002-6350-1107 AD - Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. AD - Biostatistics Program, Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, Washington. AD - Department of Biostatistics, University of Washington, Seattle, Washington. LA - eng GR - R01 GM105785/GM/NIGMS NIH HHS/United States GR - R56 LM013784/LM/NLM NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20220729 PL - England TA - Biometrics JT - Biometrics JID - 0370625 RN - 0 (Cancer Vaccines) RN - 0 (Antigens, Neoplasm) RN - 0 (Peptides) RN - 0 (HLA Antigens) SB - IM MH - Humans MH - *Cancer Vaccines/chemistry MH - Antigens, Neoplasm/genetics MH - *Neoplasms/genetics MH - Peptides/chemistry/genetics MH - HLA Antigens/genetics MH - *Melanoma/genetics PMC - PMC10548401 MID - NIHMS1908078 OTO - NOTNLM OT - cancer vaccine OT - melanoma OT - mixture model OT - neoantigens OT - neural network OT - peptide-HLA association EDAT- 2022/07/15 06:00 MHDA- 2023/09/13 06:41 PMCR- 2023/10/04 CRDT- 2022/07/14 06:32 PHST- 2021/10/29 00:00 [received] PHST- 2022/07/01 00:00 [accepted] PHST- 2023/09/13 06:41 [medline] PHST- 2022/07/15 06:00 [pubmed] PHST- 2022/07/14 06:32 [entrez] PHST- 2023/10/04 00:00 [pmc-release] AID - 10.1111/biom.13717 [doi] PST - ppublish SO - Biometrics. 2023 Sep;79(3):2664-2676. doi: 10.1111/biom.13717. Epub 2022 Jul 29.