PMID- 38167405 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240105 IS - 2731-6068 (Electronic) IS - 2731-6068 (Linking) VI - 10 IP - 1 DP - 2024 Jan 2 TI - The HLA-DRB1*09:01-DQB1*03:03 haplotype is associated with the risk for late-onset Alzheimer's disease in APOE [Formula: see text]4-negative Japanese adults. PG - 3 LID - 10.1038/s41514-023-00131-3 [doi] LID - 3 AB - Late-onset Alzheimer's disease (LOAD) is the most common cause of dementia among those older than 65 years. The onset of LOAD is influenced by neuroinflammation. The human leukocyte antigen (HLA) system is involved in regulating inflammatory responses. Numerous HLA alleles and their haplotypes have shown varying associations with LOAD in diverse populations, yet their impact on the Japanese population remains to be elucidated. Here, we conducted a comprehensive investigation into the associations between LOAD and HLA alleles within the Japanese population. Using whole-genome sequencing (WGS) data from 303 LOAD patients and 1717 cognitively normal (CN) controls, we identified four-digit HLA class I alleles (A, B, and C) and class II alleles (DRB1, DQB1, and DPB1). We found a significant association between the HLA-DRB1*09:01-DQB1*03:03 haplotype and LOAD risk in APOE [Formula: see text]4-negative samples (odds ratio = 1.81, 95% confidence interval = 1.38-2.38, P = 2.03[Formula: see text]). These alleles not only showed distinctive frequencies specific to East Asians but demonstrated a high degree of linkage disequilibrium in APOE [Formula: see text]4-negative samples (r(2) = 0.88). Because HLA class II molecules interact with T-cell receptors (TCRs), we explored potential disparities in the diversities of TCR alpha chain (TRA) and beta chain (TRB) repertoires between APOE [Formula: see text]4-negative LOAD and CN samples. Lower diversity of TRA repertoires was associated with LOAD in APOE [Formula: see text]4-negative samples, irrespective of the HLA DRB1*09:01-DQB1*03:03 haplotype. Our study enhances the understanding of the etiology of LOAD in the Japanese population and provides new insights into the underlying mechanisms of its pathogenesis. CI - (c) 2024. The Author(s). FAU - Shigemizu, Daichi AU - Shigemizu D AUID- ORCID: 0000-0002-4412-0552 AD - Medical Genome Center, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. daichi@ncgg.go.jp. AD - RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, 230-0045, Japan. daichi@ncgg.go.jp. AD - Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8551, Japan. daichi@ncgg.go.jp. FAU - Fukunaga, Koya AU - Fukunaga K AUID- ORCID: 0000-0002-5241-6062 AD - RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, 230-0045, Japan. FAU - Yamakawa, Akiko AU - Yamakawa A AUID- ORCID: 0009-0003-2255-4418 AD - Medical Genome Center, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. FAU - Suganuma, Mutsumi AU - Suganuma M AD - Medical Genome Center, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. FAU - Fujita, Kosuke AU - Fujita K AD - Department of Prevention and Care Science, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. AD - Japan Society for the Promotion of Science, Tokyo, 102-0083, Japan. FAU - Kimura, Tetsuaki AU - Kimura T AUID- ORCID: 0000-0002-2010-104X AD - Medical Genome Center, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. FAU - Watanabe, Ken AU - Watanabe K AD - NCGG Biobank, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. FAU - Mushiroda, Taisei AU - Mushiroda T AD - RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, 230-0045, Japan. FAU - Sakurai, Takashi AU - Sakurai T AD - Department of Prevention and Care Science, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. FAU - Niida, Shumpei AU - Niida S AD - Core Facility Administration, Research Institute, National Center for Geriatrics and Gerontology, Aichi, 474-8511, Japan. FAU - Ozaki, Kouichi AU - Ozaki K AUID- ORCID: 0000-0003-0028-1570 AD - Medical Genome Center, Research Institute, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. ozakikk@ncgg.go.jp. AD - RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, 230-0045, Japan. ozakikk@ncgg.go.jp. AD - Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8551, Japan. ozakikk@ncgg.go.jp. LA - eng GR - JP21H02470/MEXT | Japan Society for the Promotion of Science (JSPS)/ GR - JP21de0107002/Japan Agency for Medical Research and Development (AMED)/ GR - JP21dk0207052/Japan Agency for Medical Research and Development (AMED)/ GR - JP21dk0207045/Japan Agency for Medical Research and Development (AMED)/ GR - JP22dk0207060/Japan Agency for Medical Research and Development (AMED)/ GR - JP21de0107002/Japan Agency for Medical Research and Development (AMED)/ GR - JP21dk0207052/Japan Agency for Medical Research and Development (AMED)/ GR - JP18kk0205009/Japan Agency for Medical Research and Development (AMED)/ GR - JP18kk0205012/Japan Agency for Medical Research and Development (AMED)/ GR - JP21km0405501/Japan Agency for Medical Research and Development (AMED)/ GR - JP21dk0207045/Japan Agency for Medical Research and Development (AMED)/ GR - JP22dk0207060/Japan Agency for Medical Research and Development (AMED)/ PT - Journal Article DEP - 20240102 PL - England TA - NPJ Aging JT - npj aging JID - 9918402285106676 PMC - PMC10761915 COIS- The authors declare no competing interests. EDAT- 2024/01/04 01:18 MHDA- 2024/01/04 01:19 PMCR- 2024/01/02 CRDT- 2024/01/03 09:48 PHST- 2023/09/27 00:00 [received] PHST- 2023/11/22 00:00 [accepted] PHST- 2024/01/04 01:19 [medline] PHST- 2024/01/04 01:18 [pubmed] PHST- 2024/01/03 09:48 [entrez] PHST- 2024/01/02 00:00 [pmc-release] AID - 10.1038/s41514-023-00131-3 [pii] AID - 131 [pii] AID - 10.1038/s41514-023-00131-3 [doi] PST - epublish SO - NPJ Aging. 2024 Jan 2;10(1):3. doi: 10.1038/s41514-023-00131-3.