Safety, Tolerability, and PK/PD of CIGB-814 in Chinese Health Participants

This is an early-stage safety study of a new drug called CIGB-814 in healthy adult volunteers in China. The study is evaluating how safe the drug is and how the body processes it before it is tested in patients with disease. **You may be eligible if...** - You are a healthy adult between 18 and 45 years old - You weigh at least 50 kg (if male) or 45 kg (if female), with a BMI between 19 and 26 - You have no plans for pregnancy during the study and for 6 months after - You are willing and able to follow all study procedures and attend all required visits **You may NOT be eligible if...** - You have any significant health conditions, allergies, or chronic diseases - You are pregnant, breastfeeding, or planning a pregnancy during the study period - You have participated in another clinical trial recently - You smoke, drink heavily, or use recreational drugs Talk to your doctor to see if this trial is right for you.