Long-term Safety Study of Alogliptin in Participants With Type 2 Diabetes in Japan

A Long-term, Open-label Extension Study to Investigate the Long-term Safety of SYR-322 in Subjects With Type 2 Diabetes in Japan.

The purpose of this study was to evaluate the long-term safety and efficacy of SYR-322, once daily (QD), to an α-glucosidase inhibitor, three times daily (TID), administered for 40 consecutive weeks in participants who completed a phase 2 dose-ranging study.

Both insulin hyposecretion and insulin-resistance are considered to be involved in the development of type 2 diabetes mellitus.

Takeda is developing SYR-322 (alogliptin) for the improvement of glycemic control in patients with type 2 diabetes mellitus. Alogliptin is an inhibitor of the dipeptidyl peptidase IV (DPP-IV) enzyme. DPP-IV is thought to be primarily responsible for the degradation of 2 peptide hormones released in response to nutrient ingestion. It is expected that inhibition of DPP-IV will improve glycemic control in patients with type 2 diabetes.

To evaluate the long-term safety and efficacy of alogliptin, this extension study was administered for 40 consecutive weeks (52 weeks from the start of treatment in the phase 2 dose-ranging study) to participants who had completed the phase 2 dose-ranging study SYR-322/CCT-001 (NCT01263470).

Inclusion Criteria:

• Had completed the phase 2 dose-ranging study (i.e., the subject had completed the study visit at Week 12).

Exclusion Criteria:

• Had clinical manifestations of hepatic impairment (e.g., an aspartate aminotransferase or alanine aminotransferase value 2.5 times or more of the upper reference limit at Week 8 of treatment in the phase 2 dose-ranging study).
• Had clinical manifestations of renal impairment (e.g., a creatinine value of 2 mg/dL or more at Week 8 of treatment in the phase 2 dose-ranging study).