Common variants in HNF-1 alpha and risk of type 2 diabetes

Diabetologia. 2006 Dec;49(12):2882-91. doi: 10.1007/s00125-006-0450-x. Epub 2006 Oct 11.


Aims/hypothesis: Mutations in the hepatocyte nuclear factor 1-alpha gene (HNF-1alpha, now known as the transcription factor 1 gene [TCF1]) cause the most common monogenic form of diabetes, MODY3, but it is not known if common variants in HNF-1a are associated with decreased transcriptional activity or phenotypes related to type 2 diabetes, or whether they predict future type 2 diabetes.

Subjects and methods: We studied the effect of four common polymorphisms (rs1920792, I27L, A98V and S487N) in and upstream of the HNF-1alpha gene on transcriptional activity in vitro, and their possible association with type 2 diabetes and insulin secretion in vivo.

Results: Certain combinations of the I27L and A98V polymorphisms in the HNF-1alpha gene showed decreased transcriptional activity on the target promoters glucose transporter 2 (now known as solute carrier family 2 [facilitated glucose transporter], member 2) and albumin in both HeLa and INS-1 cells. In vivo, these polymorphisms were associated with a modest but significant impairment in insulin secretion in response to oral glucose. Insulin secretion deteriorated over time in individuals carrying the V allele of the A98V polymorphism (n = 2,293; p = 0.003). In a new case-control (n = 1,511 and n = 2,225 respectively) data set, the I27L polymorphism was associated with increased risk of type 2 diabetes, odds ratio (OR) = 1.5 (p = 0.002; multiple logistic regression), particularly in elderly (age > 60 years) and overweight (BMI > 25 kg/m(2)) patients (OR = 2.3, p = 0.002).

Conclusions/interpretation: This study provides in vitro and in vivo evidence that common variants in the MODY3 gene, HNF-1alpha, influence transcriptional activity and insulin secretion in vivo. These variants are associated with a modestly increased risk of late-onset type 2 diabetes in subsets of elderly overweight individuals.

Publication types

  • Multicenter Study

MeSH terms

  • Adult
  • Amino Acid Substitution
  • Arginine / pharmacology
  • Blood Glucose / metabolism
  • Body Weight
  • Case-Control Studies
  • Diabetes Mellitus, Type 2 / epidemiology*
  • Diabetes Mellitus, Type 2 / genetics
  • Female
  • Genetic Variation*
  • Glucose / pharmacology
  • Hepatocyte Nuclear Factor 1-alpha / genetics*
  • Humans
  • Insulin / metabolism
  • Insulin Secretion
  • Male
  • Middle Aged
  • Mutagenesis, Site-Directed
  • Overweight
  • Plasmids
  • Polymorphism, Single Nucleotide
  • Risk Factors
  • Transcription, Genetic


  • Blood Glucose
  • Hepatocyte Nuclear Factor 1-alpha
  • Insulin
  • Arginine
  • Glucose