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Evidence for Association of the E23K Variant of KCNJ11 Gene with Type 2 Diabetes in Tunisian Population: Population-Based Study and Meta-Analysis.

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Lasram, Khaled | Ben Halim, Nizar | Hsouna, Sana | Kefi, Rym | Arfa, Imen | Ghazouani, Welid | Jamoussi, Henda | Benrahma, Houda | Kharrat, Najla | Rebai, Ahmed-Riadh | Ben Ammar, Slim | Bahri, Sonia | Barakat, Abdelhamid | Abid, Abdelmajid | Abdelhak, Sonia

Edité par CCSD ; Hindawi Publishing Corporation -

International audience. Aims. Genetic association studies have reported the E23K variant of KCNJ11 gene to be associated with Type 2 diabetes. In Arab populations, only four studies have investigated the role of this variant. We aimed to replicate and validate the association between the E23K variant and Type 2 diabetes in Tunisian and Arab populations. Methods. We have performed a case-control association study including 250 Tunisian patients with Type 2 diabetes and 267 controls. Allelic association has also been evaluated by 2 meta-analyses including all population-based studies among Tunisians and Arabs (2 and 5 populations, resp.). Results. A significant association between the E23K variant and Type 2 diabetes was found (OR = 1.6, 95% CI = 1.14-2.27, and P = 0.007). Furthermore, our meta-analysis has confirmed the significant role of the E23K variant in susceptibility of Type 2 diabetes in Tunisian and Arab populations (OR = 1.29, 95% CI = 1.15-1.46, and P < 10(-3) and OR = 1.33, 95% CI = 1.13-1.56, and P = 0.001, resp.). Conclusion. Both case-control and meta-analyses results revealed the significant association between the E23K variant of KCNJ11 and Type 2 diabetes among Tunisians and Arabs.

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