Rheumatoid Arthritis
Conditions
Brief summary
This randomized, double-blind, placebo controlled, parallel group study will assess the efficacy and safety of rituximab \[MabThera/Rituxan\] in patients with severe active rheumatoid arthritis refractory to at least one anti-TNF treatment, using magnetic resonance imaging (MRI) of the hand for efficacy measurement. Patients will be randomized to receive 2 intravenous infusions 14 days apart of either 1000mg MabThera (group A) or placebo (group B). All patients will receive methotrexate 10-25mg weekly. Patients in group A demonstrating clinical response at week 24 may receive further cycles of MabThera, patients in group B without clinical response will also be treated with active MabThera. Anticipated time on study treatment is up to 2 years. Target sample size is \<50 patients.
Interventions
1000 mg by i.v. infusion on day 1 and 15
i.v. infusion on day 1 and 15
10-25 mg weekly
1000 mg by i.v. infusion on day 1 and 15, 2nd and further cycles in patients with (group A) or without (group B) clinical response in cycle 1
Sponsors
Study design
Eligibility
Inclusion criteria
* adult patients, 18-75 years of age * active rheumatoid arthritis (DAS28-CRP\>3.2) * refractory to one or more anti-TNF * on stable treatment for RA for \>/=4 weeks * evidence of erosive disease and/or synovitis in wrist and/or knuckles
Exclusion criteria
* active systemic or local infection * previous or current history of any demyelinization process in central nervous system, pancytopenia or aplasic anaemia * signs of immunodeficiency, HIV infection or tuberculosis * contraindications to MRI, such as metal devices, claustrophobia, moderate or severe renal insufficiency, or allergy to contrast agent
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Bone erosion score on magnetic resonance imaging (MRI) using the rheumatoid arthritis magnetic resonance imaging scoring system (RAMRIS) | 6 months |
Secondary
| Measure | Time frame |
|---|---|
| Bone edema score on MRI using RAMRIS | months 6, 12 and 24 |
| Bone erosion score on MRI using RAMRIS | months 12 and 24 |
| Synovitis score on MRI using RAMRIS | months 6, 12 and 24 |
| Tender or swollen joint count (ACR criteria) | months 12 and 24 |
| Health assessment questionnaire (HAQ) | months 12 and 24 |
| Disease activity according to DAS28-CRP | months 12 and 24 |
Countries
Spain