Type II deiodinase polymorphism: A potential risk factor of type 2 diabetes mellitus.

ype 2 diabetes mellitus (T2DM) remains one of the most challenging global epidemics of the twenty-first century. It is estimated that more than 350 million people worldwide are affected by this metabolic disorder. It has many risk factors. Several studies presume that type II iodothyronine deiodinase polymorphism Thr92Ala (DII-Thr92-Ala, rs225014) is yet another risk factor. The aim of the study was to assess the impact of this polymorphism on parameters of glycid metabolism. Our group consisted of 200 subjects (74 males and 126 females) at average age of 63.85 ± 18.98 without prediabetes, diabetes mellitus or any thyropathy. Blood tests were performed to evaluate glucose metabolism parameters as well as DII-Thr92Ala polymorphism. Our study confirmed the relationship between Ala homozygotes and glycosylated haemoglobin (HbA1c) serum levels (Tab. 2, Ref. 14). Keywords: diabetes mellitus 2, deiodinase II, polymorphism Thr92Ala.