The 11482G >A polymorphism in the perilipin gene is associated with weight gain with rosiglitazone treatment in type 2 diabetes.

OBJECTIVE

The aim of this study was to examine the effects of perilipin gene (PLIN) polymorphisms on weight gain with rosiglitazone treatment in patients with type 2 diabetes.

RESEARCH DESIGN AND METHODS

A total of 160 type 2 diabetic patients were treated with rosiglitazone (4 mg/day) for 12 weeks in addition to their previous medications, which were unchanged. Four single nucleotide polymorphisms (SNPs) at the PLIN locus were genotyped: PLIN 6209T>C, PLIN 11482G>A, PLIN 13041A>G, and PLIN 14995A>T.

RESULTS

Although fasting plasma glucose and HbA(1c) levels decreased; mean body weight increased significantly after rosiglitazone treatment. Among the four SNPs tested, only the PLIN 11482G>A polymorphism was associated with weight gain from rosiglitazone treatment. In addition, there was a significant difference in the increase in the body weight among the genotypes. Patients with the 11482A/A genotype showed less increase in body weight than those with other genotypes.

CONCLUSIONS

These data suggest that genetic variations in the perilipin gene can affect weight gain associated with rosiglitazone treatment in patients with type 2 diabetes.