This study is a multicenter, randomized, double-blind, placebo-controlled , phase 3 clinical trial aimed at evaluating the efficacy and safety of HDM1005 versus placebo in subjects with T2DM inadequate glycemic control with diet and exercise alone.
A total of 240 subjects will be enrolled. All subjects will be stratified by baseline HbA1c levels (≤8.5% or \>8.5%) , then randomized 1:1:1 to: Group 1 (HDM1005), Group 2 (HDM1005), and Group 3 (placebo), with 80 subjects in each treatment group. At week 36, subjects in placebo group will receive HDM1005 injection until week 52. 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, 36-week core treatment, 16-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.
Confirmed as Type 2 Diabetes Mellitus (T2DM) for at least 12 weeks and have not used any antihyperglycemic medications during for at least 12 weeks prior to screening.
Hemoglobin A1c (HbA1c) ≥7.5% and ≤10.5% at screening; and ≥7.0% and ≤10.5% at randomization.
Body Mass Index (BMI) ≥22.5 kg/m2.
Other types of diabetes besides T2DM.
Acute complications of diabetes (such as diabetic ketoacidosis, diabetic lactic acidosis, or hyperosmolar non-ketoticcoma) occurred within 24 weeks prior to signing the Informed Consent Form (ICF).
History of a level 3 hypoglycemic episode or a history of asymptomatic hypoglycemic episodes within 24 weeks prior to signing the ICF.
History or family history of medullary thyroid carcinoma (MTC), thyroid C-cell hyperplasia, or multiple endocrine neoplasia type 2 (MEN2).