PMID- 37781395 OWN - NLM STAT- MEDLINE DCOM- 20231003 LR - 20231003 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 14 DP - 2023 TI - Human leukocyte antigen association in systemic sclerosis patients: our experience at a tertiary care center in North India. PG - 1179514 LID - 10.3389/fimmu.2023.1179514 [doi] LID - 1179514 AB - INTRODUCTION: Systemic sclerosis (SSc) is a chronic multisystem autoimmune rheumatic disease of unknown etiology. Several studies have established that SSc is triggered by a dynamic interplay between genetic factors and environmental stimuli. In the present study, we aimed to study the association of human leukocyte antigen (HLA) with familial and non-familial SSc patients [limited cutaneous SSc (lcSSc) and diffuse cutaneous SSc (dcSSc)] from North India. METHODS: The HLA-A, B, DRB1, and DQB1 genotyping of 150 (70 lcSSc and 80 dcSSc) adult-onset SSc patients and 150 age-gender-matched healthy controls were performed with sequence-specific oligonucleotide (SSO) typing kits using the luminex platform. HLA typing for HLA class I (A, B, and C) and II (DRB1, DQB1, and DPB1) in five North Indian families consisting of parent-child/sibling pairs affected with SSc or overlap syndrome was performed by Next Generation Sequencing (NGS) with Illumina MiniSeq. RSEULTS: Among the non-familial SSc patients, HLA- DRB1*11 (P = 0.001, OR: 2.38, P (c) = 0.01) was identified as a risk allele, and DRB1*12 (P = .0001, OR: 0.00, P (c) = 0.001) as a protective allele. There was no statistical association found with HLA-DQB1*. Also, no significant association was observed between HLA antigens and different clinical subsets (lcSSc and dcSSc) of SSc. Two cases of familial SSc patients had the DRB1*11 allele. The DRB1*12 allele was absent in all the familial SSc patients. DISCUSSION: HLA DRB1*11 (risk allele) and DRB1*12 (protective allele) were found to be strongly associated with non-familial SSc patients and partially explain the disease's familial clustering, supporting the susceptible genetic background theory for SSc development. The study also indicates the HLA allele as a common genetic risk factor in distinct autoimmune diseases contributing to overlap syndrome or polyautoimmunity. CI - Copyright (c) 2023 Machhua, Sharma, Kumar, Singh, Aggarwal, Anand, Kumar, Singh and Minz. FAU - Machhua, Sanghamitra AU - Machhua S AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Sharma, Shefali Khanna AU - Sharma SK AD - Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India. FAU - Kumar, Yashwant AU - Kumar Y AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Singh, Surjit AU - Singh S AD - Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Aggarwal, Ritu AU - Aggarwal R AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Anand, Shashi AU - Anand S AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Kumar, Manoj AU - Kumar M AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Singh, Heera AU - Singh H AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Minz, Ranjana Walker AU - Minz RW AD - Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230913 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Histocompatibility Antigens Class I) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adult MH - Humans MH - Tertiary Care Centers MH - *Scleroderma, Systemic/genetics MH - Histocompatibility Antigens Class I MH - *Scleroderma, Diffuse MH - HLA-DRB1 Chains/genetics PMC - PMC10533912 OTO - NOTNLM OT - HLA OT - SSc OT - dcSSc OT - lcSSc OT - phenotype 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- 2023/10/02 06:42 MHDA- 2023/10/03 06:47 PMCR- 2023/01/01 CRDT- 2023/10/02 04:44 PHST- 2023/03/04 00:00 [received] PHST- 2023/06/26 00:00 [accepted] PHST- 2023/10/03 06:47 [medline] PHST- 2023/10/02 06:42 [pubmed] PHST- 2023/10/02 04:44 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2023.1179514 [doi] PST - epublish SO - Front Immunol. 2023 Sep 13;14:1179514. doi: 10.3389/fimmu.2023.1179514. eCollection 2023.