- - Subjects diagnosed with T2DM and treated with metformin equal to or above 1000 mg/day and SU (gliclazide, glipizide or glyburide/glibenclamide at maximum tolerated dose (at least half maximum approved dose) or glimepiride at maximum tolerated dose (at least 2 mg/day)), both at a stable dose for at least 90 days prior to screening. Stable is defined as unchanged medication and dose