Lack of association between KCNJ11 (rs5219) and ABCC8 (rs757110) polymorphisms and sulphonylurea treatment response in type 2 diabetes patients in Novosibirsk region

Aim. Sulfonylureas (SU) are widely used in everyday clinical practice in treatment of patients with type 2 diabetes mellitus (T2DM). There is a considerable variability in SU effects, which may be caused by psychological, social, biological and genetic factors. The aim of the study was to investigate the association between rs5219 KCNJ11 gene and rs757110 ABCC8 gene polymorphism and long-term response to SU-drugs of second and third generation in the Novosibirsk region. Materials and Methods. 326 patients with type 2 diabetes in the Novosibirsk region were examined. Patients were divided into 2 groups, depending on HbA1c level. The first group included patients with target HbA1c levels on SU monotherapy. The second group included patients who did not reach target HbA1c levels on the highest dose of SU. Genotyping of KCNJ11 (rs5219) and ABCC8 (rs757110) was performed by TaqMan real-time PCR (ICBFM SB RAS, Novosibirsk, Russia). Results. Patients with type 2 diabetes with a good response to SU-therapy compared to the group of patients with a poor response to SU-therapy were older (65.8?9.1 years vs. 61.6?7.9 years, p