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Evidence for the Thr79Met polymorphism of the ileal fatty acid binding protein (FABP6) to be associated with type 2 diabetes in obese individuals.
Mol. Genet. Metab. 98, 400-405 (2009)
The ileal fatty acid binding protein (FABP6) is known to be involved in enterohepatic bile acid metabolism. We have previously found a significant association between the rare allele of the FABP6 Thr79Met polymorphism and lower type 2 diabetes risk in a small case-control study (192 cases and 384 controls) embedded in the large EPIC-Potsdam cohort. A priori functional implication of the amino acid change was gained from in-silico analysis. In this study, we analysed an independent nested case-cohort including 543 incident type 2 diabetes cases from the EPIC-Potsdam cohort and a case-control study including 939 type 2 diabetes cases from KORA to confirm the association with type 2 diabetes and performed association analyses with quantitative disease-related measures in 2112 non-diabetic individuals. Homozygosity for the Met-allele was associated with lower risk of type 2 diabetes (EPIC-Potsdam: 0.70, P=0.04; KORA: 0.79, P=0.06) if adjusted for age, sex, body mass index (BMI), and waist circumference. The homozygous rare variant showed a significant interaction (P=0.006) with BMI. Relative risks in different categories (BMI <25, 25-30, and >30 kg/m(2)) showed an association exclusively in obese (BMI >30 kg/m(2)) individuals (combined risk ratio: 0.62, 95% CI 0.45-0.86). In non-diabetic individuals from the general adult population, no significant associations were observed with plasma total cholesterol, LDL-, and HDL-cholesterol, triglyceride, insulin and glucose concentration. In summary, we found evidence that the-putative functional-Thr79Met substitution of FABP6 confers a protective effect on type 2 diabetes in obese individuals.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Ileal fatty acid binding protein; Non-synonymous single nucleotide; polymorphism; Type 2 diabetes; Body mass index; Population-based cohort studyc
ISSN (print) / ISBN
1096-7192
e-ISSN
1096-7192
Quellenangaben
Volume: 98,
Issue: 4,
Pages: 400-405
Publisher
Elsevier
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Epidemiology (EPI)