Correlation Between Change of HbA1c, Urinary Glucose Excretion and Other Factors in Patients Treated With Ipragliflozin

Inclusion Criteria: * Subject who has written informed consent * Subjects who are diagnosed as type 2 diabetes mellitus * Subjects who are 20 to 70 years old * Subjects on a stable diet and exercise at least 8 weeks prior to the study participation * Stable doses of the following medications for 8 weeks or more but, HbA1c level of 7.0 to 9.5% (Metformin, Metformin + SU, Metformin + DPP-4 inhibitor, Metformin + TZD, TZD, TZD + SU, TZD + DPP-4 inhibitor, SU, SU + DPP-4 inhibitor, DPP-4 inhibitor) Exclusion Criteria: * Type 1 DM * Gestational DM * Diabetic ketoacidosis * CKD stage 3B-5 (eGFR 45) * Severe infection, serious trauma, or perioperative period * Known or suspected hypersensitivity to ipragliflozin * Symptomatic urogenital infection * Chemotherapy or radiation therapy for malignant tumor or diagnosis of malignant tumor within 5 years (except for thyroid cancer) * Under the therapeutic intervention and/or another clinical study using IP drug * Hepatic disease ( 3 times of upper normal limit of AST or ALT) * Serious voiding difficulty due to neurogenic bladder or prostate hyperplasia * Drugs not allowed for concomitant use * Alpha glucosidase inhibitor or meglitinide within 60 days prior to screening * Insulin within 60 days prior to screening * Systemic steroid use (PO, IV or IM) over 2 weeks within 3 months prior to screening * Inhalation or pleural intracavitary injection of steroid known as having high systemic absorption rate * GLP-1 agonist (except for exenatide) within 60 days prior to screening * Heart failure (NYHA class III-IV) or uncontrolled arrhythmia within 6 months prior to screening * Cardiovascular diseases (unstable angina, myocardial infarction, transient ischemic attack, cerebrovascular disease, coronary artery bypass graft, or percutaneous coronary intervention) within 3 months prior to screening * Subjects who are not eligible to the study according to an investigator's decision * Inability to read the consent form * Pregnancy, lactation, or plan to get pregnant during the study period