PMID- 33514426 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20210621 IS - 1478-6362 (Electronic) IS - 1478-6354 (Print) IS - 1478-6354 (Linking) VI - 23 IP - 1 DP - 2021 Jan 30 TI - The spectrum of association in HLA region with rheumatoid arthritis in a diverse Asian population: evidence from the MyEIRA case-control study. PG - 46 LID - 10.1186/s13075-021-02431-z [doi] LID - 46 AB - BACKGROUND: Fine-mapping of human leukocyte antigen (HLA) region for rheumatoid arthritis (RA) risk factors has identified several HLA alleles and its corresponding amino acid residues as independent signals (i.e., HLA-A, HLA-B, HLA-DPB1, and HLA-DQA1 genes), in addition to the well-established genetic factor in HLA-DRB1 gene. However, this was mainly performed in the Caucasian and East Asian populations, and data from different Asian regions is less represented. We aimed to evaluate whether there are independent RA risk variants in both anti-citrullinated protein antibody (ACPA)-positive and ACPA-negative RA patients from the multi-ethnic Malaysian population, using the fine-mapping of HLA region strategy. METHODS: We imputed the classical HLA alleles, amino acids, and haplotypes using the Immunochip genotyping data of 1260 RA cases (i.e., 530 Malays, 259 Chinese, 412 Indians, and 59 mixed ethnicities) and 1571 controls (i.e., 981 Malays, 205 Chinese, 297 Indians, and 87 mixed ethnicities) from the Malaysian Epidemiological Investigation of Rheumatoid Arthritis (MyEIRA) population-based case-control study. Stepwise logistic regression was performed to identify the independent genetic risk factors for RA within the HLA region. RESULTS: We confirmed that the HLA-DRB1 amino acid at position 11 with valine residue conferred the strongest risk effect for ACPA-positive RA (OR = 4.26, 95% CI = 3.30-5.49, P(GWAS) = 7.22 x 10(-29)) in the Malays. Our study also revealed that HLA-DRB1 amino acid at position 96 with histidine residue was negatively associated with the risk of developing ACPA-positive RA in the Indians (OR = 0.48, 95% CI = 0.37-0.62, P(GWAS) = 2.58 x 10(-08)). Interestingly, we observed that HLA-DQB1*03:02 allele was inversely related to the risk of developing ACPA-positive RA in the Malays (OR = 0.17, 95% CI = 0.09-0.30, P(GWAS) = 1.60 x 10(-09)). No association was observed between the HLA variants and risk of developing ACPA-negative RA in any of the three major ethnic groups in Malaysia. CONCLUSIONS: Our results demonstrate that the RA-associated genetic factors in the multi-ethnic Malaysian population are similar to those in the Caucasian population, despite significant differences in the genetic architecture of HLA region across populations. A novel and distinct independent association between the HLA-DQB1*03:02 allele and ACPA-positive RA was observed in the Malays. In common with the Caucasian population, there is little risk from HLA region for ACPA-negative RA. FAU - Tan, Lay Kim AU - Tan LK AUID- ORCID: 0000-0001-5846-2783 AD - Immunogenetic Unit, Allergy and Immunology Research Center, Ministry of Health Malaysia, Institute for Medical Research, National Institutes of Health Complex, Shah Alam, Selangor, Malaysia. tanlk@moh.gov.my. AD - Faculty of Medicine, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia. tanlk@moh.gov.my. AD - Department of Medicine, Division of Rheumatology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. tanlk@moh.gov.my. FAU - Too, Chun Lai AU - Too CL AD - Immunogenetic Unit, Allergy and Immunology Research Center, Ministry of Health Malaysia, Institute for Medical Research, National Institutes of Health Complex, Shah Alam, Selangor, Malaysia. toocl@moh.gov.my. AD - Department of Medicine, Division of Rheumatology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. toocl@moh.gov.my. FAU - Diaz-Gallo, Lina Marcela AU - Diaz-Gallo LM AD - Department of Medicine, Division of Rheumatology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. FAU - Wahinuddin, Sulaiman AU - Wahinuddin S AD - Faculty of Medicine, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia. AD - Department of Medicine, Ministry of Health Malaysia, Hospital Raja Perempuan Bainun, Ipoh, Perak, Malaysia. FAU - Lau, Ing Soo AU - Lau IS AD - Department of Medicine, Ministry of Health Malaysia, Selayang Hospital, Selayang, Selangor, Malaysia. FAU - Heselynn, Hussein AU - Heselynn H AD - Department of Medicine, Ministry of Health Malaysia, Putrajaya Hospital, Putrajaya, Malaysia. FAU - Nor-Shuhaila, Shahril AU - Nor-Shuhaila S AD - Department of Medicine, Ministry of Health Malaysia, Putrajaya Hospital, Putrajaya, Malaysia. FAU - Gun, Suk Chyn AU - Gun SC AD - Department of Medicine, Ministry of Health Malaysia, Hospital Tuanku Ja'afar Seremban, Seremban, Negeri Sembilan, Malaysia. FAU - Eashwary, Mageswaran AU - Eashwary M AD - Department of Medicine, Ministry of Health Malaysia, Putrajaya Hospital, Putrajaya, Malaysia. FAU - Mohd-Shahrir, Mohamed Said AU - Mohd-Shahrir MS AD - Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia. FAU - Ainon, Mohd Mokhtar AU - Ainon MM AD - Department of Medicine, Ministry of Health Malaysia, Tengku Ampuan Afzan Hospital, Kuantan, Pahang, Malaysia. FAU - Azmillah, Rosman AU - Azmillah R AD - Department of Medicine, Ministry of Health Malaysia, Selayang Hospital, Selayang, Selangor, Malaysia. FAU - Muhaini, Othman AU - Muhaini O AD - Department of Medicine, Ministry of Health Malaysia, Hospital Raja Perempuan Bainun, Ipoh, Perak, Malaysia. FAU - Shahnaz, Murad AU - Shahnaz M AD - Ministry of Health Malaysia, Federal Government Administrative Center, Putrajaya, Malaysia. FAU - Alfredsson, Lars AU - Alfredsson L AD - Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden. FAU - Klareskog, Lars AU - Klareskog L AD - Faculty of Medicine, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia. FAU - Padyukov, Leonid AU - Padyukov L AD - Department of Medicine, Division of Rheumatology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. leonid.padyukov@ki.se. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210130 PL - England TA - Arthritis Res Ther JT - Arthritis research & therapy JID - 101154438 RN - 0 (Autoantibodies) RN - 0 (HLA Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Alleles MH - *Arthritis, Rheumatoid/diagnosis/epidemiology/genetics MH - Autoantibodies/genetics MH - Case-Control Studies MH - Genetic Predisposition to Disease/genetics MH - HLA Antigens MH - HLA-DRB1 Chains/genetics MH - Humans PMC - PMC7847037 OTO - NOTNLM OT - HLA amino acid residues OT - HLA fine-mapping OT - Multi-ethnic Malaysian population OT - Rheumatoid arthritis OT - Risk variants COIS- The authors declare that they have no competing interests. EDAT- 2021/01/31 06:00 MHDA- 2021/06/22 06:00 PMCR- 2021/01/30 CRDT- 2021/01/30 05:23 PHST- 2020/11/04 00:00 [received] PHST- 2021/01/19 00:00 [accepted] PHST- 2021/01/30 05:23 [entrez] PHST- 2021/01/31 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2021/01/30 00:00 [pmc-release] AID - 10.1186/s13075-021-02431-z [pii] AID - 2431 [pii] AID - 10.1186/s13075-021-02431-z [doi] PST - epublish SO - Arthritis Res Ther. 2021 Jan 30;23(1):46. doi: 10.1186/s13075-021-02431-z.