Exposure-response relationships for the sodium-glucose co-transporter-2 inhibitor dapagliflozin with regard to renal risk markers
- PMID: 31984620
- PMCID: PMC7318259
- DOI: 10.1111/dom.13976
Exposure-response relationships for the sodium-glucose co-transporter-2 inhibitor dapagliflozin with regard to renal risk markers
Abstract
Aims: To quantitate the consistency of an individual's plasma exposure to dapagliflozin upon re-exposure, and to investigate whether the individual's systemic exposure to dapagliflozin explains inter-individual variation in response to dapagliflozin with regard to multiple renal risk markers.
Methods: Data were used from a crossover randomized clinical trial that assessed the albuminuria-lowering effect of dapagliflozin in 33 people with type 2 diabetes and elevated albuminuria. Fifteen participants were exposed twice to dapagliflozin. Trough plasma concentrations of dapagliflozin were measured for each participant at steady state. Dapagliflozin plasma concentrations were measured by liquid chromatography tandem mass spectrometry, and pharmacokinetic characteristics were simulated based on a population pharmacokinetic model. Linear mixed-effects models were used to quantify the exposure-response relationships.
Results: The median plasma concentration after first and second exposure to dapagliflozin was 5.3 ng/mL vs 4.6 ng/mL, respectively (P = 0.78). Lin's concordance correlation coefficient between occasions was 0.73 (P < 0.0021). Every 100 ng.h/mL increment in area under the dapagliflozin plasma concentration curve was associated with a decrease in log-transformed urinary albumin:creatinine ratio (β = -5.9, P < 0.01), body weight (β = -0.3, P < 0.01) and estimated glomerular filtration rate (β = -0.7, P = 0.01) and an increase in urinary glucose excretion (β = 17.0, P < 0.001).
Conclusion: An individual's exposure to dapagliflozin is consistent upon re-exposure and correlates with pharmacodynamic response in renal risk markers.
Keywords: SGLT2; dapagliflozin; diabetic nephropathy; pharmacodynamics; pharmacokinetics.
© 2020 The Authors. Diabetes, Obesity and Metabolism published by John Wiley & Sons Ltd.
Conflict of interest statement
M.Y.A.M.K., J.S., S.P. and J.V.K. have no conflict of interest to declare. H.J.L.H. is consultant to Abbvie, AstraZeneca, Boehringer Ingelheim, Fresenius, Gilead, Janssen, Merck, Mundipharma, Mitsubishi Tanabe. He has received research support from AstraZeneca, Abbvie, Boehringer Ingelheim and Janssen. G.D.L. has received lecture fees from Sanofi, Astra Zeneca and Jansen, and has served as a consultant for Abbvie, Sanofi, Novo Nordisk, Astra Zeneca, Boehringer Ingelheim and MSD.
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