Clinical Impact of the TCF7L2 Gene rs7903146 Type 2 Diabetes Mellitus Risk Polymorphism in Women with Gestational Diabetes Mellitus: Impaired Glycemic Control and Increased Need of Insulin Therapy

Background The single nucleotide polymorphism in TCF7L2 rs7903146 is associated with an increased risk of type 2 diabetes mellitus and gestational diabetes mellitus. Mechanisms by which this mutation acts, and its impact on the clinical course of the diseases remain unclear. Here we investigated the clinical impact of the T risk allele in women with gestational diabetes mellitus. Methods We genotyped the C/T polymorphism in 164 Caucasian women...