Dan Roden
Faculty Member
Last active: 3/24/2020

A Longitudinal HbA1c Model Elucidates Genes Linked to Disease Progression on Metformin.

Goswami S, Yee SW, Xu F, Sridhar SB, Mosley JD, Takahashi A, Kubo M, Maeda S, Davis RL, Roden DM, Hedderson MM, Giacomini KM, Savic RM
Clin Pharmacol Ther. 2016 100 (5): 537-547

PMID: 27415606 · PMCID: PMC5534241 · DOI:10.1002/cpt.428

One-third of type-2 diabetic patients respond poorly to metformin. Despite extensive research, the impact of genetic and nongenetic factors on long-term outcome is unknown. In this study we combine nonlinear mixed effect modeling with computational genetic methodologies to identify predictors of long-term response. In all, 1,056 patients contributed their genetic, demographic, and long-term HbA1c data. The top nine variants (of 12,000 variants in 267 candidate genes) accounted for approximately one-third of the variability in the disease progression parameter. Average serum creatinine level, age, and weight were determinants of symptomatic response; however, explaining negligible variability. Two single nucleotide polymorphisms (SNPs) in CSMD1 gene (rs2617102, rs2954625) and one SNP in a pharmacologically relevant SLC22A2 gene (rs316009) influenced disease progression, with minor alleles leading to less and more favorable outcomes, respectively. Overall, our study highlights the influence of genetic factors on long-term HbA1c response and provides a computational model, which when validated, may be used to individualize treatment.

© 2016 American Society for Clinical Pharmacology and Therapeutics.

MeSH Terms (21)

Adult Aged Aged, 80 and over Diabetes Mellitus, Type 2 Disease Progression Female Glycated Hemoglobin A Humans Hypoglycemic Agents Longitudinal Studies Male Membrane Proteins Metformin Middle Aged Nonlinear Dynamics Organic Cation Transporter 2 Organic Cation Transport Proteins Pharmacogenomic Variants Polymorphism, Single Nucleotide Tumor Suppressor Proteins Young Adult

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