Dataset Information

Addition of sitagliptin to ongoing metformin monotherapy improves glycemic control in Japanese patients with type 2 diabetes over 52 weeks.

ABSTRACT:

Aims/introduction

The efficacy and safety of sitagliptin, a highly selective dipeptidyl peptidase-4 inhibitor, when added to metformin monotherapy was examined in Japanese patients with type 2 diabetes.

Materials and methods

In this 52-week, add-on to metformin study, 149 patients were randomly assigned to receive sitagliptin 50 mg or placebo once daily in a double-blind fashion for 12 weeks. Thereafter, all patients who completed the double-blind period of the study received open-label sitagliptin 50 mg once daily for 40 weeks, with the investigator option of increasing sitagliptin to 100 mg once daily for patients who met predefined glycemic thresholds.

Results

After 12 weeks of treatment, the mean change from baseline in glycated hemoglobin (HbA1c) significantly decreased with sitagliptin relative to placebo (between-group difference [95% confidence interval] = -0.7% [-0.9 to -0.5] P < 0.001). At week 12, the mean changes in 2-h post-meal glucose (-2.6 mmol/L [-3.5 to -1.7]) and fasting plasma glucose (-1.0 mmol/L [-1.3 to -0.6]) also decreased significantly with sitagliptin relative to placebo (P < 0.001 for both). Significant improvements from baseline in glycemic control were also observed in the open-label period through to week 52. There were no differences between treatment groups in the incidence of adverse events (AEs), including hypoglycemia and predefined gastrointestinal AEs (nausea, vomiting and diarrhea) during the double-blind period, with similar findings in the open-label period.

Conclusions

Over a period of 52 weeks, the addition of sitagliptin once-daily to ongoing metformin therapy was efficacious and generally well tolerated in Japanese patients with type 2 diabetes. This trial was registered with ClinicalTrials.gov (no. NCT00363948).

SUBMITTER: Kadowaki T

PROVIDER: S-EPMC4019272 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature

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Publications

Addition of sitagliptin to ongoing metformin monotherapy improves glycemic control in Japanese patients with type 2 diabetes over 52 weeks.

Kadowaki Takashi T Tajima Naoko N Odawara Masato M Nishii Mikio M Taniguchi Tadaaki T Ferreira Juan Camilo Arjona JC

Journal of diabetes investigation 20121022 2

<h4>Aims/introduction</h4>The efficacy and safety of sitagliptin, a highly selective dipeptidyl peptidase-4 inhibitor, when added to metformin monotherapy was examined in Japanese patients with type 2 diabetes.<h4>Materials and methods</h4>In this 52-week, add-on to metformin study, 149 patients were randomly assigned to receive sitagliptin 50 mg or placebo once daily in a double-blind fashion for 12 weeks. Thereafter, all patients who completed the double-blind period of the study received open ...[more]

PMID: 24843649

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Project description:ObjectiveMetformin use is restricted in patients with renal impairment due to potential excess systemic accumulation. This study evaluated the glycemic effects and safety of metformin delayed-release (Metformin DR), which targets metformin delivery to the ileum to leverage its gut-based mechanisms of action while minimizing systemic exposure.Research designs and methodsParticipants (T2DM [HbA1c 7-10.5%], eGFR ≥60 mL/min/1.73m2, not taking metformin for ≥2 months) were randomized to QD placebo (PBO); QD Metformin DR 600, 900, 1200, or 1500 mg; or to single-blind BID Metformin immediate-release (IR) 1000 mg. The primary endpoint was change in HbA1c for Metformin DR vs. PBO at 16 weeks in the modified intent-to-treat (mITT) population (≥ 1 post-baseline HbA1c while on study drug), using a mixed-effects repeated measures model.Results571 subjects were randomized (56 years, 53% male, 80% white; BMI 32.2±5.5 kg/m2; HbA1c 8.6±0.9%; 51% metformin naive); 542 were in the mITT population. Metformin DR 1200 and 1500 mg significantly reduced HbA1c (-0.49±0.13% and -0.62±0.12%, respectively, vs. PBO -0.06±0.13%; p<0.05) and FPG (Caverage Weeks 4-16: -22.3±4.2 mg/dL and -25.1±4.1 mg/dL, respectively vs. -2.5±4.2 mg/dL p<0.05). Metformin IR elicited greater HbA1c improvement (-1.10±0.13%; p<0.01 vs. Placebo and all doses of Metformin DR) but with ~3-fold greater plasma metformin exposure. Normalizing efficacy to systemic exposure, glycemic improvements with Metformin DR were 1.5-fold (HbA1c) and 2.1-fold (FPG) greater than Metformin IR. Adverse events were primarily gastrointestinal but these were less frequent with Metformin DR (<16% incidence) vs. Metformin IR (28%), particularly nausea (1-3% vs 10%).ConclusionMetformin DR exhibited greater efficacy per unit plasma exposure than Metformin IR. Future studies will evaluate the effects of Metformin DR in patients with type 2 diabetes and advanced renal disease.Trial registrationClinicaltrials.gov NCT02526524.

Dataset Information

Addition of sitagliptin to ongoing metformin monotherapy improves glycemic control in Japanese patients with type 2 diabetes over 52 weeks.

Aims/introduction

Materials and methods

Results

Conclusions

Publications

Addition of sitagliptin to ongoing metformin monotherapy improves glycemic control in Japanese patients with type 2 diabetes over 52 weeks.

Similar Datasets

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