The objectives of this study are 1) to compare the effect of ipragliflozin 50 mg on glucose-lowering effect with sitagliptin 100 mg in patients with type 2 diabetes mellitus, whose HbA1c level is ≥ 7.5% with sulfonylurea and metformin, 2) to investigate changes of other metabolic and cardiovascular risk factors such as triglyceride, HDL-cholesterol, uric acid, blood pressure, and inflammatory markers, 3) to examine changes of body composition including fat and muscle mass with volume status.

The objectives of this study are to compare the effect of 50mg of ipragliflozin, a SGLT2 inhibitor, on glucose-lowering effect with 100mg of sitagliptin, a DPP4 inhibitor in patients with type 2 diabetes mellitus, whose HbA1c level is ≥ 7.5% with sulfonylurea and metformin.

We are also going to investigate changes of other metabolic and cardiovascular risk factors such as triglyceride, HDL-cholesterol, uric acid, blood pressure, and inflammatory markers.

Changes of body composition including fat and muscle mass with volume status will be also examined.

Inclusion Criteria:

• Type 2 diabetes with HbA1c 7.5% - 9.0% at screening visit
• Male or female between 20 and 75 years of age
• Patients taking sulfonylurea (glimepiride 1~8mg or gliclazide 30~120 mg or equivalent dose) and metformin (≥ 1000 mg or maximum tolerated dose) for more than 3 months
• BMI ≥23 kg/m²
• Estimated GFR ≥ 60 ml/min/1.73m²
• Women of child bearing potential must take precautions to avoid pregnancy throughout the study and for 4 weeks after intake of the last dose and must have a negative urinary pregnancy test.

Exclusion Criteria:

• Type 1 diabetes, gestational diabetes, or diabetes with secondary cause
• Patients with acute coronary syndrome within 3 months prior to screening visit
• Patients with acute coronary syndrome within 3 months prior to screening visit
• Pregnant or breastfeeding women or reproductive-age women who refuse contraception
• Chronic hepatitis B or C (except healthy carrier of HBV), liver disease (AST/ALT > 3-fold the upper limit of normal)
• Cancer within 5 years (except squamous cell cancer, cervical cancer, thyroid cancer with appropriate treatment) except thyroid cancer or carcinoma in situ
• Other clinical trials within 30 days
• Alcohol abuse
• Contraindication to SGLT2 inhibitors or Dipeptidyl-peptidase 4 inhibitors
• Taking insulin, oral hypoglycemic agents other than metformin, sulfonylurea, and the study drugs.

Yes