PMID- 33973677 OWN - NLM STAT- MEDLINE DCOM- 20210831 LR - 20240403 IS - 1531-8257 (Electronic) IS - 0885-3185 (Print) IS - 0885-3185 (Linking) VI - 36 IP - 8 DP - 2021 Aug TI - Trans-Ethnic Fine-Mapping of the Major Histocompatibility Complex Region Linked to Parkinson's Disease. PG - 1805-1814 LID - 10.1002/mds.28583 [doi] AB - BACKGROUND: Despite evidence for the role of human leukocyte antigen (HLA) in the genetic predisposition to Parkinson's disease (PD), the complex haplotype structure and highly polymorphic feature of the major histocompatibility complex (MHC) region has hampered a unified insight on the genetic risk of PD. In addition, a majority of the reports focused on Europeans, lacking evidence on other populations. OBJECTIVES: The aim of this study is to elucidate the genetic features of the MHC region associated with PD risk in trans-ethnic cohorts. METHODS: We conducted trans-ethnic fine-mapping of the MHC region for European populations (14,650 cases and 1,288,625 controls) and East Asian populations (7712 cases and 27,372 controls). We adopted a hybrid fine-mapping approach including both HLA genotype imputation of genome-wide association study (GWAS) data and direct imputation of HLA variant risk from the GWAS summary statistics. RESULTS: Through trans-ethnic MHC fine-mapping, we identified the strongest associations at amino acid position 13 of HLA-DRbeta1 (P = 6.0 x 10(-15) ), which explains the majority of the risk in HLA-DRB1. In silico prediction revealed that HLA-DRB1 alleles with histidine at amino acid position 13 (His13) had significantly weaker binding affinity to an alpha-synuclein epitope than other alleles (P = 9.6 x 10(-4) ). Stepwise conditional analysis suggested additional independent associations at Ala69 in HLA-B (P = 1.0 x 10(-7) ). A subanalysis in Europeans suggested additional independent associations at non-HLA genes in the class III MHC region (EHMT2; P = 2.5 x 10(-7) ). CONCLUSIONS: Our study highlights the shared and distinct genetic features of the MHC region in patients with PD across ethnicities. (c) 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society. CI - (c) 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society. FAU - Naito, Tatsuhiko AU - Naito T AUID- ORCID: 0000-0002-2779-4600 AD - Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan. AD - Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. FAU - Satake, Wataru AU - Satake W AD - Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. FAU - Ogawa, Kotaro AU - Ogawa K AD - Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan. AD - Department of Neurology, Osaka University Graduate School of Medicine, Suita, Japan. FAU - Suzuki, Ken AU - Suzuki K AUID- ORCID: 0000-0003-1065-3593 AD - Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan. FAU - Hirata, Jun AU - Hirata J AD - Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan. AD - Pharmaceutical Discovery Research Laboratories, Teijin Pharma Limited, Hino, Japan. FAU - Foo, Jia Nee AU - Foo JN AUID- ORCID: 0000-0001-9899-2308 AD - Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, Singapore. AD - Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore. FAU - Tan, Eng-King AU - Tan EK AD - Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Singapore, Singapore. AD - Duke-National University of Singapore Medical School, Singapore, Singapore. FAU - Toda, Tatsushi AU - Toda T AD - Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. FAU - Okada, Yukinori AU - Okada Y AUID- ORCID: 0000-0002-0311-8472 AD - Department of Statistical Genetics, Osaka University Graduate School of Medicine, Suita, Japan. AD - Laboratory of Statistical Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan. AD - Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210511 PL - United States TA - Mov Disord JT - Movement disorders : official journal of the Movement Disorder Society JID - 8610688 RN - 0 (Histocompatibility Antigens) RN - EC 2.1.1.43 (EHMT2 protein, human) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) SB - IM MH - Alleles MH - Genetic Predisposition to Disease/genetics MH - Genome-Wide Association Study MH - Haplotypes MH - Histocompatibility Antigens MH - Histone-Lysine N-Methyltransferase MH - Humans MH - Major Histocompatibility Complex MH - *Parkinson Disease/genetics MH - Polymorphism, Single Nucleotide PMC - PMC8453830 OTO - NOTNLM OT - Parkinson's disease; HLA; MHC; fine-mapping; trans-ethnic analysis EDAT- 2021/05/12 06:00 MHDA- 2021/09/01 06:00 PMCR- 2021/09/21 CRDT- 2021/05/11 09:34 PHST- 2021/02/25 00:00 [revised] PHST- 2020/12/21 00:00 [received] PHST- 2021/03/02 00:00 [accepted] PHST- 2021/05/12 06:00 [pubmed] PHST- 2021/09/01 06:00 [medline] PHST- 2021/05/11 09:34 [entrez] PHST- 2021/09/21 00:00 [pmc-release] AID - MDS28583 [pii] AID - 10.1002/mds.28583 [doi] PST - ppublish SO - Mov Disord. 2021 Aug;36(8):1805-1814. doi: 10.1002/mds.28583. Epub 2021 May 11.