Health Volunteer Clinical Trial
Official title:
a Single-Center, Randomized, Double-Blind, Does-Escalation Phase I Clinical Study to Evaluate the Tolerability, Safety, PK Characteristics of Recombinant Humanized CTLA-4-FC Fusion Protein Injection in Healthy Subjects.
This is a single-center, randomized, double-blind, does-escalation Phase I Clinical Study that aim to evaluate the tolerability, safety and PK Characteristics of recombinant humanized CTLA-4-FC fusion protein injection in Healthy Subjects.
This study adopts a single-center,randomized, double-blind, does-escalation, placebo-controlled design. There are five dose levels of 1mg/kg, 2.5mg/kg, 5mg/kg, 7.5mg/kg and10mg/kg. 2 of 4 subjects in the 1mg/kg dose group receive the test drug and two receive a placebo. 4 of 6 subjects in the 2.5mg/kg dose group receive the test drug and two receive a placebo. 10 of 12 subjects in the 5mg/kg dose group receive the test drug and two receive a placebo. 10 of 12 subjects in the 7.5mg/kg dose group receive the test drug and two receive a placebo. 10 of 12 subjects in the 10mg/kg dose group receive the test drug and two receive a placebo. Subjects are randomly assigned to receive intravenous administration of the test drug or placebo. The next higher dose group could be initiated only if the stopping rules is not met which are determined by investigator. ;