PMID- 26095634 OWN - NLM STAT- MEDLINE DCOM- 20160315 LR - 20150623 IS - 1399-0039 (Electronic) IS - 0001-2815 (Linking) VI - 86 IP - 1 DP - 2015 Jul TI - Association of HLA-DQA1 and -DQB1 alleles with type I diabetes in Arabs: a meta-analyses. PG - 21-7 LID - 10.1111/tan.12598 [doi] AB - This study aimed at assessing the nature and significance of associations between various alleles of HLA-DQA1, HLA-DQB1, and type I diabetes (T1D) in Arab populations. Evidence from literature (published before 20 April 2015) was amassed and analysed through multiple meta-analyses, which yielded effect summary odds ratios and 95% confidence intervals for 24 alleles and 4 haplotypes. A total of 1273 cases and 1747 controls from 16 studies were analysed. High levels of significance were obtained to support higher T1D risk when harbouring DQA1*03:01. The alleles DQB1*02:01 and *03:02 and the haplotypes DR3 and DR4 were significant risk factors, albeit with high publication heterogeneity. The protective effects of DQA1*01:01, DQB1*05:03, *06:02, *06:03, and *06:04 were robustly suggested by all indicators of meta-analyses. The haplotypes DR7 and DR11 were strongly suggested to be protective in Arabs. A relatively small number of studies have emerged from Arab countries, mostly with inadequate power on an individual basis. This study fills the gap by providing significant size effect of human leukocyte antigen (HLA) alleles and completes the continuum of global ethnic differences in this context. CI - (c) 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Hamzeh, A R AU - Hamzeh AR AD - Centre for Arab Genomic Studies, Dubai, United Arab Emirates. FAU - Nair, P AU - Nair P AD - Centre for Arab Genomic Studies, Dubai, United Arab Emirates. FAU - Al-Khaja, N AU - Al-Khaja N AD - Centre for Arab Genomic Studies, Dubai, United Arab Emirates. FAU - Al Ali, M T AU - Al Ali MT AD - Centre for Arab Genomic Studies, Dubai, United Arab Emirates. LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (HLA-DQ alpha-Chains) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQA1 antigen) RN - 0 (HLA-DQB1 antigen) SB - IM MH - Alleles MH - Arabs MH - Diabetes Mellitus, Type 1/*ethnology/*genetics/immunology/pathology MH - Gene Frequency MH - Genetic Predisposition to Disease MH - HLA-DQ alpha-Chains/*genetics/immunology MH - HLA-DQ beta-Chains/*genetics/immunology MH - Haplotypes MH - Humans MH - Odds Ratio MH - Risk Factors OTO - NOTNLM OT - Arabs OT - HLA-DQA OT - HLA-DQB OT - genetic susceptibility OT - type 1 diabetes mellitus EDAT- 2015/06/23 06:00 MHDA- 2016/03/16 06:00 CRDT- 2015/06/23 06:00 PHST- 2015/03/08 00:00 [received] PHST- 2015/05/19 00:00 [revised] PHST- 2015/05/31 00:00 [accepted] PHST- 2015/06/23 06:00 [entrez] PHST- 2015/06/23 06:00 [pubmed] PHST- 2016/03/16 06:00 [medline] AID - 10.1111/tan.12598 [doi] PST - ppublish SO - Tissue Antigens. 2015 Jul;86(1):21-7. doi: 10.1111/tan.12598.