Conditions: Rheumatoid Arthritis
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 253
Healthy volunteers: no

Brief summary:
This trial will test the hypothesis that the addition of CF101, a novel anti-inflammatory agent, will improve the clinical condition of patients with rheumatoid arthritis who still have active joint inflammation despite taking methotrexate for at least 6 months.

Detailed description:
This will be a multi-center, randomized, double-blind, parallel-group, placebo-controlled, dose-finding study in which patients with active RA despite receiving methotrexate for at least 6 months (at unchanged doses for \>=2 months) will be randomized to the addition of either CF101 0.1 mg, CF101 1 mg, or placebo given orally q12h for 12 weeks. Screening examinations will occur within 1 month prior to dosing. Washout of other disease-modifying antirheumatic drugs (DMARDs) (with the exception of hydroxychloroquine), including biological agents, will occur prior to dosing; if washout is necessary, patients must re-qualify for inclusion following the washout. Doses of nonsteroidal anti-inflammatory drugs (NSAIDS) and corticosteroids must be stable for \>=1 month prior to dosing and remain so during protocol participation. Disease activity will be assessed using swollen and tender joint counts, physician and patient global assessments (by visual analog scale, VAS), patient reported pain (by VAS), a Health Assessment Questionnaire (HAQ) Disability Index (DI), Westergren erythrocyte sedimentation rate (ESR, Screening, Weeks 0 and12), and C-reactive protein (CRP) levels. Assessments will take place at Screening, Baseline (Week 0), and at Weeks 2, 4, 8, and 12.

Arms:
arm 1: CF101 0.1 mg was given orally q12h arm 2: CF101 1 mg was given orally q12h arm 3: Matched placebo was given orally q12h

Interventions: intervention 1: CF101 intervention 2: Placebo
Intervention descriptions: intervention 1: orally q12h intervention 2: orally q12h

Protocol document: