Investigation of KCNQ1 polymorphisms as biomarkers for cardiovascular diseases in the Turkish Cypriots for establishing preventative medical measures.

Potassium channels are important in transmitting electrical signals through potassium ions transport. These potassium channels are made from signals encoded by KCNQ1 gene. KCNQ1 polymorphisms were associated with many diseases, including many metabolic and cardiovascular diseases and therefore they can be employed as biomarkers. In this study we aimed to investigate KCNQ1 polymorphisms in the Turkish Cypriot population to reveal the allele frequencies specific for this population and use these polymorphisms as biomarkers to develop preventative medical measures. The genotypes of KCNQ1 polymorphisms (rs231361, rs231359, rs151290, rs2283228, rs2237895, rs2237896) were investigated for the first time in Turkish Cypriot population. The correlation between genotypes of these polymorphisms and plasma lipid levels in this population was also explored. The results of this study showed that there was significant differences of the allele frequencies of between rs2283228 allele of C and rs2237896 (P > 0.05) in Turkish Cypriot population. There was no association between the genotypes of the six polymorphisms and the lipid metabolism. This study is the first genetic epidemiology study that investigated the allelic frequencies of KCNQ1 polymorphisms associated with metabolic syndromes as well as cardiovascular diseases. This study proves to be crucial since the etiologic determinants and molecular pathology of cardiovascular diseases have not yet clearly understood. This study showed that genome wide association studies should be designed for preventative medicine in the Turkish Cypriot population.