Conditions: Type 2 Diabetes Mellitus
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 213
Healthy volunteers: no

Brief summary:
The purpose of this study is to evaluate the efficacy and safety of omarigliptin in participants with type 2 diabetes mellitus and moderate or severe chronic renal insufficiency or end stage renal disease on dialysis with inadequate glycemic control. The primary hypothesis of the study is that omarigliptin compared to placebo produces greater reduction in glycosylated hemoglobin (A1C) after 24 weeks.

Detailed description:

Arms:
arm 1: Phase A: omarigliptin 12.5 mg or 25 mg capsule orally once a week for 24 weeks. Phase B: omarigliptin 12.5 mg or 25 mg capsule orally once a week for 30 weeks. Participants who are not on background insulin therapy or who did not receive open-label glipizide or insulin as rescue therapy during Phase A of the study (Week 1 through Week 24) will receive matching placebo to glipizide daily in a blinded manner during Phase B of the study (Week 24 through Week 54). arm 2: Phase A: matching placebo to omarigliptin orally once a week for 24 weeks. Phase B: matching placebo to omarigliptin orally once a week for 30 weeks. Participants who are not on background insulin therapy or who did not receive open-label glipizide or insulin as rescue therapy during Phase A of the study (Week 1 through Week 24) will receive glipizide 2.5 daily up to a maximum of 20 mg daily (based on glycemic control) in a blinded manner during Phase B of the study (Week 24 through Week 54).

Interventions: intervention 1: Omarigliptin intervention 2: Placebo to omarigliptin intervention 3: Glipizide intervention 4: Placebo to glipizide intervention 5: Insulin
Intervention descriptions: intervention 1: Participants with moderate renal insufficiency will receive one omarigliptin 25 mg capsule orally once a week; participants with severe renal insufficiency or end stage renal disease will receive one omarigliptin 12.5 mg capsule orally once a week intervention 2: Matching placebo to omarigliptin capsule administered orally once a week intervention 3: Phase A: Participants may receive open-label glipizide as rescue therapy up to Week 24 of the study. Phase B: Participants who received placebo to omarigliptin during Phase A and are not on background insulin therapy or who did not receive open-label glipizide or insulin as rescue therapy during Phase A of the study Week 1 through Week 24) will receive glipizide capsule(s) 2.5 daily up to a maximum of 20 mg daily (based on glycemic control) in a blinded manner during Phase B of the study (Week 24 through Week 54). intervention 4: Matching placebo to glipizide daily intervention 5: Participants on insulin therapy at screening will continue insulin therapy during the study. Insulin glargine therapy may be administered as rescue therapy as determined by the investigator.

Protocol document: