The Impacts ofSLC22A1rs594709 andSLC47A1rs2289669 Polymorphisms on Metformin Therapeutic Efficacy in Chinese Type 2 Diabetes Patients

Abstract

Background. We aimed to investigate the distributive characteristics ofSLC22A1rs594709 andSLC47A1rs2289669 polymorphisms and their influence on metformin efficacy in Chinese T2DM patients.Methods. The distributions ofSLC22A1rs594709 andSLC47A1rs2289669 polymorphisms were determined in 267 T2DM patients and 182 healthy subjects. Subsequently, 53 newly diagnosed patients who received metformin monotherapy were recruited to evaluate metformin efficacy.Results. No significant difference was found between T2DM patients and healthy subjects inSLC22A1rs594709 andSLC47A1rs2289669 allele frequencies and genotype frequencies. After metformin treatment,SLC22A1rs594709 GG genotype patients showed a higher increase in FINS (p=0.015) and decrease in HOMA-IS (p=0.001) and QUICKI (p=0.002) than A allele carriers.SLC47A1rs2289669 GG genotype patients had a higher decrease in TChol (p=0.030) and LDL-C (p=0.049) than A allele carriers. AmongSLC22A1rs594709 AA genotype, patients withSLC47A1rs2289669 AA genotype showed a higher decrease in FBG (p=0.015), PINS (p=0.041), and HOMA-IR (p=0.014) than G allele carriers. However, amongSLC22A1rs594709 G allele carriers,SLC47A1rs2289669 AA genotype patients showed a higher decrease in TChol (p=0.013) than G allele carriers.Conclusion. Our data suggest thatSLC22A1rs594709 andSLC47A1rs2289669 polymorphisms may influence metformin efficacy together in Chinese T2DM patients.