RT Journal Article T1 The study to understand the genetics of the acute response to metformin and glipizide in humans (SUGAR-MGH): design of a pharmacogenetic resource for type 2 diabetes. A1 Walford, Geoffrey A A1 Colomo, Natalia A1 Todd, Jennifer N A1 Billings, Liana K A1 Fernandez, Marlene A1 Chamarthi, Bindu A1 Warner, A Sofia A1 Davis, Jaclyn A1 Littleton, Katherine R A1 Hernandez, Alicia M A1 Fanelli, Rebecca R A1 Lanier, Amelia A1 Barbato, Corinne A1 Ackerman, Rachel J A1 Khan, Sabina Q A1 Bui, Rosa A1 Garber, Laurel A1 Stolerman, Elliot S A1 Moore, Allan F A1 Huang, Chunmei A1 Kaur, Varinderpal A1 Harden, Maegan A1 Taylor, Andrew A1 Chen, Ling A1 Manning, Alisa K A1 Huang, Paul A1 Wexler, Deborah A1 McCarthy, Rita M A1 Lo, Janet A1 Thomas, Melissa K A1 Grant, Richard W A1 Goldfine, Allison A1 Hudson, Margo S A1 Florez, Jose C K1 Alelos K1 Glucosa sanguínea K1 Diabetes Mellitus, Tipo II K1 Predisposición genética a la enfermedad K1 glipicida K1 Prueba de tolerancia a la glucosa K1 Insulina K1 Biomarcadores K1 Hipoglicemiantes K1 Fenotipo K1 Polimorfismo de nucleótido único K1 Proteína 2 similar al factor de transcripción 7 K1 Resultado del tratamiento AB OBJECTIVEGenome-wide association studies have uncovered a large number of genetic variants associated with type 2 diabetes or related phenotypes. In many cases the causal gene or polymorphism has not been identified, and its impact on response to anti-hyperglycemic medications is unknown. The Study to Understand the Genetics of the Acute Response to Metformin and Glipizide in Humans (SUGAR-MGH, NCT01762046) is a novel resource of genetic and biochemical data following glipizide and metformin administration. We describe recruitment, enrollment, and phenotyping procedures and preliminary results for the first 668 of our planned 1,000 participants enriched for individuals at risk of requiring anti-diabetic therapy in the future.METHODSAll individuals are challenged with 5 mg glipizide × 1; twice daily 500 mg metformin × 2 days; and 75-g oral glucose tolerance test following metformin. Genetic variants associated with glycemic traits and blood glucose, insulin, and other hormones at baseline and following each intervention are measured.RESULTSApproximately 50% of the cohort is female and 30% belong to an ethnic minority group. Following glipizide administration, peak insulin occurred at 60 minutes and trough glucose at 120 minutes. Thirty percent of participants experienced non-severe symptomatic hypoglycemia and required rescue with oral glucose. Following metformin administration, fasting glucose and insulin were reduced. Common genetic variants were associated with fasting glucose levels.CONCLUSIONSSUGAR-MGH represents a viable pharmacogenetic resource which, when completed, will serve to characterize genetic influences on pharmacological perturbations, and help establish the functional relevance of newly discovered genetic loci to therapy of type 2 diabetes.TRIAL REGISTRATIONClinicalTrials.gov NCT01762046. PB Public Library of Science YR 2015 FD 2015-03-26 LK http://hdl.handle.net/10668/2332 UL http://hdl.handle.net/10668/2332 LA en NO Walford GA, Colomo N, Todd JN, Billings LK, Fernandez M, Chamarthi B, et al. The study to understand the genetics of the acute response to metformin and glipizide in humans (SUGAR-MGH): design of a pharmacogenetic resource for type 2 diabetes. PLoS ONE. 2015; 10(3):e0121553 NO ClinicalTrials.gov NCT01762046; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 6, 2025