Renal Function During an Open-Label Prospective Observational Trial of Sitagliptin in Patients With Diabetes: A Sub-Analysis of the JAMP Study

Osamu Tomonaga, Hiroshi Sakura, Naotake Hashimoto, Kazuo Sasamoto, Hiroshi Ohashi, Sumiko Hasumi, Noriko Ujihara, Tadasu Kasahara, Hideo Nunome, Masashi Honda, Yasuhiko Iwamoto


Background: The aim of the study was to determine the effects of sitagliptin on renal function in a diabetic population including patients with normal renal function.

Methods: We analyzed the association between 12-month, 50 mg/day sitagliptin and renal function in outpatients with type 2 diabetes mellitus and poor blood glucose control in a subset of patients in the larger Januvia Multicenter Prospective Trial in Type 2 Diabetes observational study. Stratified analyses of changes in estimated glomerular filtration rate (eGFR) and urinary albumin-to-creatinine ratio (UACR) were performed. Factors associated with changes in eGFR at 3 months were examined by multivariate regression analysis.

Results: Of the 779 patients enrolled, 585 were followed up for 12 months. eGFR decreased significantly from baseline at 3 and 12 months in patients with a baseline eGFR of ? 90 mL/min/1.73 m2 and in those with a baseline eGFR of ? 60 to < 90 mL/min/1.73 m2. Conversely, eGFR tended to increase at 3 and 12 months in patients with a baseline eGFR of ? 45 to < 60 mL/min/1.73 m2 and in those with a baseline eGFR of ? 30 to < 45 mL/min/1.73 m2. UACR decreased significantly (-21.6 (-46.8, 7.8)) at 3 months in patients with a baseline UACR of ? 30 mg/g Cre. Multivariate regression analysis of factors associated with changes in eGFR at 3 months revealed that higher baseline eGFR and greater decline in UACR were associated with more conspicuous decreases in eGFR.

Conclusions: In this group of diabetic patients receiving sitagliptin, eGFR declined in patients with high baseline eGFR, but not in those with a low baseline eGFR.

J Clin Med Res. 2018;10(1):32-40


DPP-4 inhibitor; Prospective observational study; Renal function; Sitagliptin; JAMP

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