SYR-472 Open-label Study

To evaluate the efficacy and safety of treatment with SYR-472 in diabetic patients.

Inclusion Criteria:

-1. The participant is judged to be capable of understanding and complying with protocol requirements by the investigator or subinvestigator.

2. The participant can sign and date a written, informed consent form prior to the initiation of any study procedures.

Exclusion Criteria:

-1. The participant has concurrent serious cardiac disease, serious cerebrovascular disorder, or serious pancreatic or hematological disease

. 2. The participant is assessed to be ineligible for the study by the investigator or subinvestigator.