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Comparison of Two Treatment Regimens (Sitagliptin Versus Liraglutide) on Participants Who Failed to Achieve Good Glucose Control on Metformin Alone (MK-0431-403)

NCT01296412 · Completed

Last updated 2026-05-28

This clinical trial compares two diabetes medications, sitagliptin and liraglutide, in adults with type 2 diabetes who did not achieve good blood sugar control with metformin alone.

Status Completed The study has finished.
Phase Phase 3 Confirms effectiveness in a large group before approval.
Type Interventional (clinical trial)
Design Randomized, open-label (no blinding) treatment study
Participants 653 people
Who can join Ages 18–79 · all sexes
Timeline Started 2011-03 · est. completion 2012-02

What this study is testing ClinicalTrials.gov NCT01296412 ↗

Description as written by the study sponsor.

This study is being done to compare the effectiveness and safety of two treatment paradigms (oral sitagliptin with or without glimepiride versus liraglutide with or without increased dosing) for the treatment of participants with Type 2 Diabetes that is not adequately controlled with metformin alone. The primary hypothesis postulated that the mean change from baseline in hemoglobin A1c (A1C) in participants treated with a sitagliptin-based treatment is non-inferior to that of participants treated with a liraglutide-based treatment.

Treatments tested

Main thing measuredChange From Baseline in Hemoglobin A1c (A1C)
SponsorMerck Sharp & Dohme LLC
Conditions studiedDiabetes Mellitus, Type 2
GLP-1 drugs liraglutide

Full protocol, eligibility, and contacts on ClinicalTrials.gov NCT01296412 ↗