PMID- 32695830 OWN - NLM STAT- MEDLINE DCOM- 20210609 LR - 20220415 IS - 2314-6753 (Electronic) IS - 2314-6745 (Print) VI - 2020 DP - 2020 TI - Associations of KCNQ1 Polymorphisms with the Risk of Type 2 Diabetes Mellitus: An Updated Meta-Analysis with Trial Sequential Analysis. PG - 7145139 LID - 10.1155/2020/7145139 [doi] LID - 7145139 AB - BACKGROUND: Previous studies have examined the role of the KQT-like subfamily Q member1 (KCNQ1) gene polymorphisms on the risk of type 2 diabetes mellitus (T2DM), but the findings are inconclusive. OBJECTIVE: To examine the association between the KCNQ1 gene polymorphisms and the risk of T2DM using an updated meta-analysis with an almost tripled number of studies. METHODS: Five electronic databases, such as PubMed and Embase, were searched thoroughly for relevant studies on the associations between seven most studied KCNQ1 gene polymorphisms, including rs2237892, rs2237897, rs2237895, rs2283228, rs231362, rs151290, and rs2074196, and T2DM risk up to September 14, 2019. The summary odds ratios (ORs) with their 95% confidence intervals (CIs) were applied to assess the strength of associations in the random-effects models. We used the trial sequential analysis (TSA) to measure the robustness of the evidence. RESULTS: 49 publications including 55 case-control studies (68,378 cases and 66,673 controls) were finally enrolled. In overall analyses, generally, increased T2DM risk was detected for rs2237892, rs2237895, rs2283228, rs151290, and rs2074196, but not for rs231362 under all genetic models. The ORs and 95% CIs for allelic comparison were 1.23 (1.14-1.33) for rs2237892, 1.21 (1.16-1.27) for rs2237895, 1.27 (1.11-1.46) for rs2237897, 1.25 (1.09-1.42) for rs2283228, 1.14 (1.03-1.27) for rs151290, 1.31 (1.23-1.39) for rs2074196, and 1.16 (0.83, 1.61) for rs231362. Stratified analyses showed that associations for rs2237892, rs2237895, rs2283228, and rs151290 were more evident among Asians than Caucasians. TSA demonstrated that the evidence was sufficient for all polymorphisms in this study. The genotypes of the three SNPs (rs2237892, rs2283228, and rs231362) were significantly correlated with altered KCNQ1 gene expression. CONCLUSION: This meta-analysis suggested that KCNQ1 gene polymorphisms (rs2237892, rs2283228, rs2237895, rs151290, and rs2074196) might be the susceptible factors for T2DM, especially among Asian population. CI - Copyright (c) 2020 Xiao-xuan Yu et al. FAU - Yu, Xiao-Xuan AU - Yu XX AUID- ORCID: 0000-0002-6730-0935 AD - Department of Epidemiology, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632 Guangdong, China. FAU - Liao, Min-Qi AU - Liao MQ AUID- ORCID: 0000-0003-4382-191X AD - Department of Epidemiology, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632 Guangdong, China. FAU - Zeng, Yu-Fei AU - Zeng YF AD - Department of Obstetrics and Gynecology, Shangrao Fifth People's Hospital, Shangrao, Jiangxi 334000, China. FAU - Gao, Xu-Ping AU - Gao XP AUID- ORCID: 0000-0003-3813-2036 AD - Department of Epidemiology, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632 Guangdong, China. FAU - Liu, Yan-Hua AU - Liu YH AD - The First Affiliated Hospital of Zhengzhou University, No. 1 East Jianshe Road, Zhengzhou, 450052 Henan, China. FAU - Sun, Wei AU - Sun W AD - Customs Comprehensive Laboratory, Baiyun International Airport Customs, Hengyi Road, Guangzhou, 510080 Guangdong, China. FAU - Zhu, Sui AU - Zhu S AD - Department of Medical Statistics, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632 Guangdong, China. FAU - Zeng, Fang-Fang AU - Zeng FF AUID- ORCID: 0000-0001-8650-0927 AD - Department of Epidemiology, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632 Guangdong, China. FAU - Ye, Yan-Bin AU - Ye YB AUID- ORCID: 0000-0002-1325-1517 AD - Department of Nutrition, The First Affiliated Hospital of Sun Yat-sen University, 58# Zhongshan Road 2, Guangzhou, 510080 Guangdong, China. LA - eng PT - Journal Article PT - Meta-Analysis PT - Review DEP - 20200703 PL - England TA - J Diabetes Res JT - Journal of diabetes research JID - 101605237 RN - 0 (KCNQ1 Potassium Channel) SB - IM MH - Alleles MH - Diabetes Mellitus, Type 2/*genetics MH - Gene Frequency MH - Genetic Association Studies MH - *Genetic Predisposition to Disease MH - Genotype MH - Humans MH - KCNQ1 Potassium Channel/*genetics MH - *Polymorphism, Single Nucleotide PMC - PMC7362295 COIS- The authors state that the study was conducted without any commercial or financial relationship. EDAT- 2020/07/23 06:00 MHDA- 2021/06/10 06:00 PMCR- 2020/07/03 CRDT- 2020/07/23 06:00 PHST- 2019/11/30 00:00 [received] PHST- 2020/04/10 00:00 [revised] PHST- 2020/04/28 00:00 [accepted] PHST- 2020/07/23 06:00 [entrez] PHST- 2020/07/23 06:00 [pubmed] PHST- 2021/06/10 06:00 [medline] PHST- 2020/07/03 00:00 [pmc-release] AID - 10.1155/2020/7145139 [doi] PST - epublish SO - J Diabetes Res. 2020 Jul 3;2020:7145139. doi: 10.1155/2020/7145139. eCollection 2020.