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Tabassum, R.* ; Chauhan, G.* ; Dwivedi, O.P.* ; Mahajan, A.* ; Jaiswal, A.* ; Kaur, I.* ; Bandesh, K.* ; Singh, T.* ; Mathai, B.J.* ; Pandey, Y.* ; Chidambaram, M.* ; Sharma, A.* ; Chavali, S.* ; Sengupta, S.* ; Ramakrishnan, L.* ; Venkatesh, P.* ; Aggarwal, S.K.* ; Ghosh, S.* ; Prabhakaran, D.* ; Srinath, R.K.* ; Saxena, M.* ; Banerjee, M.* ; Mathur, S.* ; Bhansali, A.* ; Shah, V.N.* ; Madhu, S.V.* ; Marwaha, R.K.* ; Basu, A.* ; Scaria, V.* ; McCarthy, M.I.* ; DIAGRAM Consortium (Gieger, C. ; Grallert, H. ; Huth, C. ; Illig, T. ; Klopp, N. ; Meitinger, T. ; Petersen, A.-K. ; Thorand, B. ; Wichmann, H.-E.) ; INDICO Consortium (*) ; Venkatesan, R.* ; Mohan, V.* ; Tandon, N.* ; Bharadwaj, D.*

Genome-wide association study for type 2 diabetes in Indians identifies a new susceptibility locus at 2q21.

Diabetes 62, 977-986 (2013)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Indians undergoing socioeconomic and lifestyle transitions will be maximally affected by epidemic of type 2 diabetes (T2D). We conducted a two-stage genome-wide association study of T2D in 12,535 Indians, a less explored but high-risk group. We identified a new type 2 diabetes-associated locus at 2q21, with the lead signal being rs6723108 (odds ratio 1.31; P = 3.32 × 10(-9)). Imputation analysis refined the signal to rs998451 (odds ratio 1.56; P = 6.3 × 10(-12)) within TMEM163 that encodes a probable vesicular transporter in nerve terminals. TMEM163 variants also showed association with decreased fasting plasma insulin and homeostatic model assessment of insulin resistance, indicating a plausible effect through impaired insulin secretion. The 2q21 region also harbors RAB3GAP1 and ACMSD; those are involved in neurologic disorders. Forty-nine of 56 previously reported signals showed consistency in direction with similar effect sizes in Indians and previous studies, and 25 of them were also associated (P < 0.05). Known loci and the newly identified 2q21 locus altogether explained 7.65% variance in the risk of T2D in Indians. Our study suggests that common susceptibility variants for T2D are largely the same across populations, but also reveals a population-specific locus and provides further insights into genetic architecture and etiology of T2D.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
ISSN (print) / ISBN 0012-1797
e-ISSN 1939-327X
Zeitschrift Diabetes
Quellenangaben Band: 62, Heft: 3, Seiten: 977-986 Artikelnummer: , Supplement: ,
Verlag American Diabetes Association
Verlagsort Alexandria, VA.
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Molecular Epidemiology (AME)
Institute of Genetic Epidemiology (IGE)
German Center for Diabetes Reseach (DZD)
Institute of Epidemiology II (EPI2)
Institute of Epidemiology (EPI)