PMID- 30433870 OWN - NLM STAT- MEDLINE DCOM- 20190617 LR - 20221207 IS - 2363-8915 (Electronic) IS - 2363-8915 (Linking) VI - 33 IP - 4 DP - 2018 Dec 19 TI - Lack of effect of the SLC47A1 and SLC47A2 gene polymorphisms on the glycemic response to metformin in type 2 diabetes mellitus patients. PG - 175-185 LID - 10.1515/dmpt-2018-0030 [doi] AB - Background This work aimed to evaluate the influence of single nucleotide polymorphisms (SNPs) in the SLC47A1 (922-158G>A; rs2289669) and SLC47A2 (-130G>A; rs12943590) genes on the relative change in HbA1c in type 2 diabetes mellitus (T2DM) patients of South India who are taking metformin as monotherapy. It also aims to study the effects of these SNPs on the dose requirement of metformin for glycemic control and the adverse effects of metformin. Methods Diabetes patients on metformin monotherapy were recruited based on the eligibility criteria (n=105). DNA was extracted and genotyping was performed with a real-time PCR system using TaqMan(R) SNP genotyping assay method. The HbA1c levels were measured using Bio-Rad D-10 Hemoglobin Analyzer. Results After adjusting for multiple comparisons (Bonferroni correction) the difference found in the glycemic response between the "GG" genotype and "AG/AA" genotype groups of the SLC47A2 gene was not significant (p=0.027; which was greater than the critical value of 0.025). Patients with "GG" genotype showed a 5.5% decrease in HbA1c from baseline compared to those with the "AG/AA" genotype (0.1% increase). The SNP in the SLC47A1 gene also did not influence the glycemic response to metformin (p=0.079). The median dose requirements based on the genotypes of the rs12943590 variant (p=0.357) or rs2289669 variant (p=0.580) were not significantly different. Similarly, there was no significant difference in the occurrence of adverse effects across the genotypes in both the SLC47A1 (p=0.615) and SLC47A2 (p=0.309) genes. Conclusions The clinical response to metformin was not associated with the SNPs in the SLC47A1 and SLC47A2 genes coding for the multidrug and toxin extrusion protein (MATE) transporters. Furthermore, the studied SNPs had no influence on the dose requirement or adverse effects of metformin. FAU - Raj, Gerard Marshall AU - Raj GM AUID- ORCID: 0000-0001-7499-7219 AD - Department of Pharmacology, Sri Venkateshwaraa Medical College Hospital and Research Centre (SVMCH & RC), Pondy-Villupuram Main Road, Ariyur, Puducherry 605102, India. FAU - Mathaiyan, Jayanthi AU - Mathaiyan J AD - Department of Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Wyawahare, Mukta AU - Wyawahare M AD - Department of General Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Priyadarshini, Rekha AU - Priyadarshini R AD - Department of Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Drug Metab Pers Ther JT - Drug metabolism and personalized therapy JID - 101653409 RN - 0 (Blood Glucose) RN - 0 (Glycated Hemoglobin A) RN - 0 (Hypoglycemic Agents) RN - 0 (Organic Cation Transport Proteins) RN - 0 (SLC47A1 protein, human) RN - 0 (SLC47A2 protein, human) RN - 0 (hemoglobin A1c protein, human) RN - 9100L32L2N (Metformin) SB - IM MH - Blood Glucose/analysis MH - Diabetes Mellitus, Type 2/blood/*drug therapy/genetics MH - Dose-Response Relationship, Drug MH - Female MH - Genotype MH - Glycated Hemoglobin/analysis MH - Humans MH - Hypoglycemic Agents/administration & dosage/adverse effects/*therapeutic use MH - Male MH - Metformin/administration & dosage/adverse effects/*therapeutic use MH - Middle Aged MH - Organic Cation Transport Proteins/*genetics MH - *Polymorphism, Single Nucleotide MH - Prospective Studies OTO - NOTNLM OT - metformin OT - multidrug and toxin extrusion proteins OT - single nucleotide polymorphism OT - solute carrier family 47 member 1 (SLC47A1) OT - solute carrier family 47 member 2 (SLC47A2) EDAT- 2018/11/16 06:00 MHDA- 2019/06/18 06:00 CRDT- 2018/11/16 06:00 PHST- 2018/09/25 00:00 [received] PHST- 2018/10/26 00:00 [accepted] PHST- 2018/11/16 06:00 [pubmed] PHST- 2019/06/18 06:00 [medline] PHST- 2018/11/16 06:00 [entrez] AID - /j/dmdi.ahead-of-print/dmpt-2018-0030/dmpt-2018-0030.xml [pii] AID - 10.1515/dmpt-2018-0030 [doi] PST - ppublish SO - Drug Metab Pers Ther. 2018 Dec 19;33(4):175-185. doi: 10.1515/dmpt-2018-0030.