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Association Analysis of 6,736 U.K. Subjects Provides Replication and Confirms TCF7L2 as a Type 2 Diabetes Susceptibility Gene With a Substantial Effect on Individual Risk

Open access
Groves, Christopher J., Zeggini, Eleftheria, Minton, Jayne, Frayling, Timothy M., Weedon, Michael N., Rayner, Nigel W., Hitman, Graham A., Walker, Mark, Wiltshire, Steven, Hattersley, Andrew T., McCarthy, Mark I.·2006·Diabetes

Abstract

Recent data suggest that common variation in the transcription factor 7-like 2 (TCF7L2) gene is associated with type 2 diabetes. Evaluation of such associations in independent samples provides necessary replication and a robust assessment of effect size. Using four TCF7L2 single nucleotide polymorphisms (SNPs; including the two most associated in the previous study), we conducted a case-control study in 2,158 type 2 diabetic subjects and 2,574 control subjects and a family-based association analysis in 388 parent-offspring trios all from the U.K. All SNPs showed powerful associations with diabetes in the case-control analysis, with strongest effects at rs7903146 (allele-wise relative risk 1.36 [95% CI 1.24–1.48], P = 1.3 × 10−11). Data were consistent with a multiplicative model. The family-based analyses provided independent evidence for association at all loci (e.g., rs4506565, 62% transmission, P = 7 × 10−5) with no parent-of-origin effects. The frequency of diabetes-associated TCF7L2 genotypes was greater in cases ascertained for positive family history and early onset (rs4606565, P = 0.02); the population-attributable risk, estimated from the least-selected cases, is ∼16%. The overall evidence for association for these variants (P = 4.4 × 10−14 combining case-control and family-based analyses for rs4506565) exceeds genome-wide significance criteria and clearly establishes TCF7L2 as a type 2 diabetes susceptibility gene of substantial importance.

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Metadata

Authors
Groves, C. J., Zeggini, E., Minton, J., Frayling, T. M., Weedon, M. N., Rayner, N. W., Hitman, G. A., Walker, M., Wiltshire, S., Hattersley, A. T., & McCarthy, M. I.
Venue
Diabetes
Published
2006-09-01
Volume
55
Issue
9
Pages
2640-2644
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2152326504
Cited by
252
References
6
FWCI
21.38
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Association Analysis of 6,736 U.K. Subjects Provides Replication and Confirms TCF7L2 as a Type 2 Diabetes Susceptibility Gene With a Substantial Effect on Individual Risk. https://app.cochat.ai/papers/10.2337/db06-0355
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Groves, C. J., Zeggini, E., Minton, J., Frayling, T. M., Weedon, M. N., Rayner, N. W., Hitman, G. A., Walker, M., Wiltshire, S., Hattersley, A. T., & McCarthy, M. I. (2006). Association Analysis of 6,736 U.K. Subjects Provides Replication and Confirms TCF7L2 as a Type 2 Diabetes Susceptibility Gene With a Substantial Effect on Individual Risk. Diabetes. https://doi.org/10.2337/db06-0355

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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