Phase II Study of TQH3906 Capsules for Treating Active Psoriatic Arthritis in Adults Aged 18 to 70

What this Trial Is About

Researchers are evaluating the dose-effect relationship of TQH3906 capsules compared to placebo in treating active Psoriatic Arthritis PsA. This Phase II, randomized, double-blind, placebo- and active drug-controlled clinical trial aims to measure the proportion of participants achieving a 20% improvement in arthritis symptoms by Week 12, using the American College of Rheumatology ACR20 criteria as the primary endpoint. Participants are randomly assigned to receive one of several oral treatments daily from Day 1 to Day 85 either 24 mg or 16 mg of TQH3906 capsules, placebo capsules matching TQH3906, or 5 mg tofacitinib citrate tablets. The treatments are administered in the morning while fasting, with tofacitinib also taken at bedtime. This study evaluates efficacy and safety across these groups over 12 weeks of treatment. During the study, participants are assessed at multiple timepoints for improvements in arthritis symptoms ACR20, ACR50, ACR70 and psoriasis severity PASI 75 and PASI 90. Blood samples are collected to evaluate drug levels and immune markers at baseline and Weeks 2, 4, 8, and 12. Safety is monitored continuously through adverse event reporting up to 28 days after the last dose. The total study duration per participant is approximately 12 weeks of treatment plus follow-up.

A Clinical Trial of TQH3906 Capsules in the Treatment of Active Psoriatic Arthritis