A Study of HDM1005 in Participants With T2DM Not Controlled With Metformin Alone or in Combination With a Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitor

This study is a multicenter, randomized, open-label, parallel-group, phase 3 clinical trial aimed at evaluating the efficacy and safety of HDM1005 versus active comparator in subjects with Type 2 Diabetes Mellitus (T2DM) Inadequate Glycemic Control by Metformin Monotherapy or in Combination With a Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitor. A total of 912 subjects will be enrolled. All subjects will be stratified by baseline HbA1c levels (≤8.5% or \>8.5%) and metformin monotherapy (yes or no), then randomized 1:1:1 to: Group 1 (HDM1005), Group 2 (HDM1005), and Group 3 (active comparator), with 304 subjects in each treatment group. All treatment groups will implement dose titration to achieve the target dose. The study consists of: up to 2-week screening, 2-week run-in, 40-week core treatment, 12-week extension treatment, and 4-week follow-up, totaling 60 weeks. The end-of-study visit will be conducted 28 days after the last administration cycle.