A Phase 3 Study of LNK01001 Capsule in Moderately to Severely Active Rheumatoid Arthritis
Brief Summary: This is a randomized, double-blind study comparing LNK01001 to placebo in Chinese participants with moderately to severely active rheumatoid arthritis who are on a stable dose of conventional synthetic disease-modifying anti-rheumatic drugs (csDMARDs) and have an inadequate response or Intolerance to biologic DMARDs(bDMARDs).

The study objective of Period 1 (Day 1 to Week 24) is to compare the safety and efficacy of LNK01001 12 mg twice daily (BID) versus placebo for the treatment of signs and symptoms of participants with moderately to severely active rheumatoid arthritis (RA) who are on a stable dose of csDMARDs and had an inadequate response to or intolerance to at least 1 bDMARD.

The study objective of Period 2 (Week 24 to Week 76) is to evaluate the long-term safety, tolerability, and efficacy of LNK01001 12 mg BID in participants with RA who completed Period 1.
- EligibilityCriteria: Inclusion Criteria:  Participants aged 18 and above. Diagnosis of rheumatoid arthritis (RA) for ≥ 3 months. ≥ 6 swollen joints (based on 66 joint counts) and ≥ 6 tender joints (based on 68 joint counts) at Screening and baseline visit. Erythrocyte sedimentation rate (ESR) ≥ 28mm/h or high-sensitivity C-Reactive Protein (hsCRP) ≥ ULN at Screening. Participants have been receiving csDMARD therapy ≥ 3 months and on a stable dose for ≥ 4 weeks prior to the first dose of study drug. Have an inadequate response to ≥ 1 bDMARD.  Exclusion Criteria:  Subjects who were prior exposure to Janus Kinase (JAK) inhibitor (including but not limited to tofacitinib, baricitinib, and filgotinib) and have evidence showing an inadequate response or intolerance. Subjects who received intra-articular, intramuscular, intravenous, trigger point or tender point, intracapsular, or intra-tendon injections of glucocorticoids within 4 weeks before randomization. Current diagnosis of systemic inflammatory disease other than RA. History of malignancy or current diagnosis of malignancy within 5 years before screening visit. Uncontrolled diabetes, hypertension, kidney disease, liver disease, severe heart disease. - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult