This study is to evaluate the efficacy (HbA1c change from baseline) and safety of ASP1941 in combination with metformin in subjects with type 2 diabetes mellitus (T2DM) who have inadequate glycemic control with metformin alone. The effects of ASP1941 are compared with those of placebo.
This study is to evaluate the efficacy and safety after concomitant administration of ASP1941 and metformin in patients with diabetes mellitus.