Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of RZ-629 in Healthy Subjects and T2D

This study is testing the safety, tolerability, and how the body processes a new experimental drug called RZ-629 in both healthy adults and people with Type 2 diabetes. RZ-629 is being investigated as a potential treatment for Type 2 diabetes. **You may be eligible if...** - You are between 18 and 65 years old - You are a healthy adult with a BMI of 18–32 kg/m² (OR if you have Type 2 diabetes, a BMI of 25–40 kg/m²) - You have normal fasting blood sugar levels (if in the healthy group) - You meet minimum weight requirements (50 kg for men, 45 kg for women in the healthy group) **You may NOT be eligible if...** - You are a healthy volunteer but have elevated blood sugar or a diabetes diagnosis - You are a Type 2 diabetes participant but have very poorly controlled blood sugar or serious diabetes complications - You take medications that could interact with RZ-629 - You have significant kidney, liver, or heart problems - You are pregnant, breastfeeding, or planning to become pregnant Talk to your doctor to see if this trial is right for you.