Conditions: Type 2 Diabetes Mellitus
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 585
Healthy volunteers: no

Brief summary:
This study will examine the safety and efficacy of the addition of omarigliptin in Japanese participants with type 2 diabetes mellitus who have inadequate glycemic control on diet/exercise therapy and oral antihyperglycemic agent monotherapy.

Detailed description:
The treatment period is composed of a 24-week double-blind period (Phase A) and a 28-week open-label period (Phase B). During Phase A, participants will received either omarigliptin 25 mg or a matching placebo. During Phase, B all participants will receive omarigliptin 25 mg. All participants will remain on a stable dose and administration of a single oral antihyperglycemic basal medication.

Arms:
arm 1: Omarigliptin 25 mg administered orally once weekly for 52 weeks (24 weeks during Phase A and 28 weeks during Phase B). Participants continued pre-study basal medication of SUs throughout the duration of the study. arm 2: Omarigliptin 25 mg administered orally once weekly for 52 weeks (24 weeks during Phase A and 28 weeks during Phase B). Participants continued pre-study basal medication of glinides throughout the duration of the study. arm 3: Omarigliptin 25 mg administered orally once weekly for 52 weeks (24 weeks during Phase A and 28 weeks during Phase B). Participants continued pre-study basal medication of BGs throughout the duration of the study. arm 4: Omarigliptin 25 mg administered orally once weekly for 52 weeks (24 weeks during Phase A and 28 weeks during Phase B). Participants continued pre-study basal medication of TZDs throughout the duration of the study. arm 5: Omarigliptin 25 mg administered orally once weekly for 52 weeks (24 weeks during Phase A and 28 weeks during Phase B). Participants continued pre-study basal medication of α-glucosidase (α-GIs) inhibitors throughout the duration of the study. arm 6: Placebo matching omarigliptin administered orally once weekly for 24 weeks during Phase A. Omarigliptin 25 mg is administered once weekly for 28 weeks during Phase B. Participants continued pre-study basal medication of SUs throughout the duration of the study. arm 7: Placebo matching omarigliptin administered orally once weekly for 24 weeks during Phase A. Omarigliptin 25 mg is administered once weekly for 28 weeks during Phase B. Participants continued pre-study basal medication of glinides throughout the duration of the study. arm 8: Placebo matching omarigliptin administered orally once weekly for 24 weeks during Phase A. Omarigliptin 25 mg is administered once weekly for 28 weeks during Phase B. Participants continued pre-study basal medication of BGs throughout the duration of the study. arm 9: Placebo matching omarigliptin administered orally once weekly for 24 weeks during Phase A. Omarigliptin 25 mg is administered once weekly for 28 weeks during Phase B. Participants continued pre-study basal medication of TZDs throughout the duration of the study. arm 10: Placebo matching omarigliptin administered orally once weekly for 24 weeks during Phase A. Omarigliptin 25 mg is administered once weekly for 28 weeks during Phase B. Participants continued pre-study basal medication of α-GIs inhibitors throughout the duration of the study.

Interventions: intervention 1: Omarigliptin intervention 2: Matching placebo to omarigliptin
Intervention descriptions: intervention 1: Omarigliptin (MK-3102) 25 mg capsule administered orally once weekly. Pre-study basal medications include: SUs (gliclazide, glibenclamide, or glimepiride); Glinides (nateglinide , mitiglinide, or repaglinide); BGs (metformin); TZDs (pioglitazone); and α-GIs (acarbose, voglibose, or miglitol). intervention 2: Matching placebo to omarigliptin 25 mg capsule administered orally once weekly. Pre-study basal medications include: SUs (gliclazide, glibenclamide, or glimepiride); Glinides (nateglinide , mitiglinide, or repaglinide); BGs (metformin); TZDs (pioglitazone); and α-GIs (acarbose, voglibose, or miglitol).

Protocol document: