The study consists of a screening period of up to 2 weeks, a 4-week single-blind run-in period, a 24-week double-blinded treatment period, a 28-week extended treatment period, and a 2-week safety follow-up period.Eligible subjects will be enrolled in a 4-week single-blind run-in period with daily oral administration of 1 tablet of PB-201 matched placebo and 1 Vildagliptin matched placebo in the morning and evening respectively.After the end of the single-blind run-in period, subjects who meet the protocol enrollment requirements will be randomized in the proportion of 2:1:1 to receive double-blinded treatment for 24 weeks in three different treatment groups (test arm, Vildagliptin arm, or placebo arm).
This is a multicenter, randomized, double-blind, parallel, Vildagliptin and Placebo-Controlled study to evaluate the efficacy and safety of oral administration of 100 mg of PB-201 in the morning and evening in treatmentnaive patients with type 2 diabetes mellitus.