Journal
HUMAN MOLECULAR GENETICS
Volume 17, Issue 12, Pages 1798-1802Publisher
OXFORD UNIV PRESS
DOI: 10.1093/hmg/ddn070
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Funding
- Medical Research Council [G0600331] Funding Source: researchfish
- Medical Research Council [G0600331] Funding Source: Medline
- MRC [G0600331] Funding Source: UKRI
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Stone et al . previously reported an association between the TBC1D1 gene variant R125W (rs35859249) and severe obesity in women from US pedigrees. We attempted to replicate this result in 9714 French Caucasian individuals, combining family-based and general population studies. We confirmed an association with familial obesity (defined as body mass index (BMI) >= 97th percentile) in women from 1109 obesity-selected pedigrees (Z-score = 2.70, P = 0.008). Analysis of 16 microsatellite markers on chromosome 4 restricted to the 42 pedigrees carrying the TBC1D1 R125W variant allele also revealed a suggestive evidence of linkage with obesity (maximum likelihood binomial LOD of 2.73, P = 0.0002) on chromosome 4p14, where resides TBC1D1 . In contrast, R125W variant was neither associated with BMI nor with obesity in a large population-based cohort. These results confirm a putative role of TBC1D1 R125W variant in familial obesity predisposition.
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