Conditions: Diabetes Mellitus, Type 2
Keywords: Diabetes Mellitus, Type 2 Diabetes Mellitus Canagliflozin (JNJ-28431754) Metformin
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 1186
Healthy volunteers: no

Brief summary:
The purpose of this study is to assess the effectiveness of the co-administration of canagliflozin and metformin extended release (XR) compared with canagliflozin alone, and metformin XR alone in patients with type 2 diabetes mellitus with inadequate control despite treatment with diet and exercise. The safety and tolerability of canagliflozin will also be assessed.

Detailed description:
This study will be a randomized (the study medication is assigned by chance), double-blind (neither physician nor participant knows the identity of the assigned treatment), active-controlled (one of the treatments is an established effective treatment for type 2 diabetes mellitus), parallel-group (each group of participants will be treated at the same time), 5-arm (groups), multicenter study. Approximately 1,200 participants will be randomly assigned to the 5 treatment arms in a 1:1:1:1:1 ratio for 26 weeks.

Arms:
arm 1: Participants will receive one 100 mg canagliflozin capsule before the morning meal and one matching placebo capsule with the evening meal plus placebo tablets with the evening meal (to match the metformin XR tablets administered in other treatment arms) for 26 weeks. arm 2: Participants will receive one 300 mg canagliflozin capsule before the morning meal and one matching placebo capsule with the evening meal plus placebo tablets with the evening meal (to match the metformin XR tablets administered in other treatment arms) for 26 weeks. arm 3: Participants will receive metformin XR tablets (in doses titrated over 9 weeks) once daily with the evening meal, plus one placebo capsule before the morning meal and one placebo capsule with the evening meal (to match the canagliflozin capsules administered in other treatment arms) for 26 weeks. arm 4: Participants will receive one 100 mg canagliflozin capsule with the evening meal and one matching placebo capsule before the morning meal plus metformin XR tablets (in doses titrated over 9 weeks) once daily with the evening meal for 26 weeks. arm 5: Participants will receive one 300 mg canagliflozin capsule with the evening meal and one matching placebo capsule before the morning meal plus metformin XR tablets (in doses titrated over 9 weeks) once daily with the evening meal for 26 weeks.

Interventions: intervention 1: Canagliflozin 100 mg intervention 2: Canagliflozin 300 mg intervention 3: Metformin XR
Intervention descriptions: intervention 1: One 100 mg capsule taken orally (by mouth) once daily either before the morning meal (for the Canagliflozin 100 mg arm) or with the evening meal (for the Canagliflozin 100 mg + Metformin XR arm). intervention 2: One 300 mg capsule taken orally (by mouth) once daily either before the morning meal (for the Canagliflozin 300 mg arm) or with the evening meal (for the Canagliflozin 300 mg + Metformin XR arm). intervention 3: One 500 mg tablet (Day 1 up to week 1); two 500 mg tablets (Week 1 up to Week 3); three 500 mg tablets (Week 3 to Week 6); four 500 mg tablets (Week 6 to Week 9). Tablets will be administered with the evening meal.

Protocol document: