Journal
CLINICAL PHARMACOLOGY & THERAPEUTICS
Volume 101, Issue 6, Pages 763-772Publisher
WILEY
DOI: 10.1002/cpt.567
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Funding
- Diabetes Care System West-Friesland, the Netherlands
- Netherlands Organisation for Health Research and Development (Priority Medicines Elderly Programme) [113102006]
- Innovative Medicines Initiative Joint Undertaking [115317]
- European Union
- Wellcome Trust [102820/Z/13/Z]
- Ministry of Education, Science, Research and Sport, Slovak Republic [VEGA 1/0389/14, VEGA 1/0027/16]
- NIH [GM117163, T32 GM007175]
- National Institutes of Health [U19 GM061390, RC2 AG036607]
- RIKEN Institute
- Robert Wood Johnson Foundation
- Ellison Medical Foundation
- Wayne and Gladys Valley Foundation
- Kaiser Permanente
- Council of Ministers/Ministry of Civil Affairs of Bosnia and Herzegovina
- Federal Ministry for Education and Science of Bosnia and Herzegovina
- European Foundation for the Study of Diabetes Albert Renold Travel Fellowship
- AJ Andersen and Wife's Foundation [01737-0005]
- AP Moeller Foundation for the Advancement of Medical Science [09034]
- Region of Southern Denmark [09/12913]
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Therapeutic response tometformin, a first-line drug for type 2 diabetes (T2D), is highly variable, in part likely due to genetic factors. To date, metformin pharmacogenetic studies have mainly focused on the impact of variants in metformin transporter genes, with inconsistent results. To clarify the significance of these variants in glycemic response to metformin in T2D, we performed a large-scale meta-analysis across the cohorts of the Metformin Genetics Consortium(MetGen). Nine candidate polymorphisms in five transporter genes (organic cation transporter [OCT] 1, OCT2, multidrug and toxin extrusion transporter [MATE] 1, MATE2-K, and OCTN1) were analyzed in up to 7,968 individuals. None of the variants showed a significant effect on metformin response in the primary analysis, or in the exploratory secondary analyses, when patients were stratified according to possible confounding genotypes or prescribed a daily dose ofmetformin. Our results suggest that candidate transporter gene variants have little contribution to variability in glycemic response tometformin in T2D.
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