PMID- 37415598 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 1664-8021 (Print) IS - 1664-8021 (Electronic) IS - 1664-8021 (Linking) VI - 14 DP - 2023 TI - Race/ethnicity-stratified fine-mapping of the MHC locus reveals genetic variants associated with late-onset asthma. PG - 1173676 LID - 10.3389/fgene.2023.1173676 [doi] LID - 1173676 AB - Introduction: Asthma is a chronic disease of the airways that impairs normal breathing. The etiology of asthma is complex and involves multiple factors, including the environment and genetics, especially the distinct genetic architecture associated with ancestry. Compared to early-onset asthma, little is known about genetic predisposition to late-onset asthma. We investigated the race/ethnicity-specific relationship among genetic variants within the major histocompatibility complex (MHC) region and late-onset asthma in a North Carolina-based multiracial cohort of adults. Methods: We stratified all analyses by self-reported race (i.e., White and Black) and adjusted all regression models for age, sex, and ancestry. We conducted association tests within the MHC region and performed fine-mapping analyses conditioned on the race/ethnicity-specific lead variant using whole-genome sequencing (WGS) data. We applied computational methods to infer human leukocyte antigen (HLA) alleles and residues at amino acid positions. We replicated findings in the UK Biobank. Results: The lead signals, rs9265901 on the 5' end of HLA-B, rs55888430 on HLA-DOB, and rs117953947 on HCG17, were significantly associated with late-onset asthma in all, White, and Black participants, respectively (OR = 1.73, 95%CI: 1.31 to 2.14, p = 3.62 x 10(-5); OR = 3.05, 95%CI: 1.86 to 4.98, p = 8.85 x 10(-6); OR = 19.5, 95%CI: 4.37 to 87.2, p = 9.97 x 10(-5), respectively). For the HLA analysis, HLA-B*40:02 and HLA-DRB1*04:05, HLA-B*40:02, HLA-C*04:01, and HLA-DRB1*04:05, and HLA-DRB1*03:01 and HLA-DQB1 were significantly associated with late-onset asthma in all, White, and Black participants. Conclusion: Multiple genetic variants within the MHC region were significantly associated with late-onset asthma, and the associations were significantly different by race/ethnicity group. CI - Copyright (c) 2023 Lee, Choi, Burkholder, Perera, Mack, Miller, Fessler, Cook, Karmaus, Nakano, Garantziotis, Madenspacher, House, Akhtari, Schmitt, Fargo, Hall and Motsinger-Reif. FAU - Lee, Eunice Y AU - Lee EY AD - Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Choi, Wonson AU - Choi W AD - Genomics and Bioinformatics Laboratory, Seoul National University, Seoul, Republic of Korea. FAU - Burkholder, Adam B AU - Burkholder AB AD - National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Perera, Lalith AU - Perera L AD - Genomic Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Mack, Jasmine A AU - Mack JA AD - Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. AD - Department of Obstetrics and Gynecology, University of Cambridge, Cambridge, United Kingdom. FAU - Miller, Frederick W AU - Miller FW AD - Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Fessler, Michael B AU - Fessler MB AD - Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Cook, Donald N AU - Cook DN AD - Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States. AD - Immunogenetics Group, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Karmaus, Peer W F AU - Karmaus PWF AD - Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Nakano, Hideki AU - Nakano H AD - Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Garantziotis, Stavros AU - Garantziotis S AD - Clinical Research Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Madenspacher, Jennifer H AU - Madenspacher JH AD - Clinical Research Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - House, John S AU - House JS AD - Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Akhtari, Farida S AU - Akhtari FS AD - Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. AD - Clinical Research Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Schmitt, Charles S AU - Schmitt CS AD - Division of Translational Toxicology, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Fargo, David C AU - Fargo DC AD - National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Hall, Janet E AU - Hall JE AD - Clinical Research Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. FAU - Motsinger-Reif, Alison A AU - Motsinger-Reif AA AD - Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Durham, NC, United States. LA - eng PT - Journal Article DEP - 20230621 PL - Switzerland TA - Front Genet JT - Frontiers in genetics JID - 101560621 PMC - PMC10321602 OTO - NOTNLM OT - HLA allele OT - MHC OT - ethnicity OT - immune function OT - late-onset asthma OT - race COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/07/07 06:42 MHDA- 2023/07/07 06:43 PMCR- 2023/06/21 CRDT- 2023/07/07 03:54 PHST- 2023/02/24 00:00 [received] PHST- 2023/06/09 00:00 [accepted] PHST- 2023/07/07 06:43 [medline] PHST- 2023/07/07 06:42 [pubmed] PHST- 2023/07/07 03:54 [entrez] PHST- 2023/06/21 00:00 [pmc-release] AID - 1173676 [pii] AID - 10.3389/fgene.2023.1173676 [doi] PST - epublish SO - Front Genet. 2023 Jun 21;14:1173676. doi: 10.3389/fgene.2023.1173676. eCollection 2023.