An Open Label Follow-On Study of Safety and Pharmacodynamic Effects of 24 Weeks of Treatment With DIO-902 in Combination With Metformin and Atorvastatin in Subjects With Type 2 Diabetes Mellitus (Protocol No. DIO-503)

To maintain the blind in Protocol DIO-502, subjects will be re-randomized at Study Visit 1 to one of three doses of DIO-902: 150, 300 or 450 mg QHS. All subjects receiving DIO-902 placebo and 50% of subjects receiving DIO-902 will be re-randomized to one of three DIO-902 doses. The remaining 50% of subjects receiving DIO-902 will be assigned to their original DIO-902 dose. The re- randomization will be performed by a group independent of study conduct to ensure the treatment status of the subject while in Protocol DIO-502 remains blinded. In addition, subjects will continue on the same dose of metformin that they had been taking during the conduct of Protocol DIO-502. Subjects will continue on atorvastatin 10 mg for the first 4 weeks of this protocol. Thereafter, at Study Visits 3 and 4, the dose of atorvastatin may be increased up to a maximum of 40 mg daily in order to achieve LDL-cholesterol/non-HDL cholesterol goals specified within the protocol. In addition, after Study Visit 4 (Week 12) subjects with HbA1c levels of > 7.5% (0.075 Hb Fract.) will undergo a one time titration of their oral hypoglycemic regimen as per the algorithm provided in the protocol.