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Factorial randomised controlled trial of glucocorticoids and combination disease modifying drugs in early rheumatoid arthritis

Choy EH, Smith CM, Farewell V, Walker D, Hassell A, Chau L, Scott DL, CARDERA (Combination Anti-Rheumatic Drugs in Early Rheumatoid Arhritis) Trial Group

Annals of the rheumatic diseases, 2008

1,391 participants

Abstract

OBJECTIVE: Treating early active rheumatoid arthritis (RA) with disease modifying antirheumatic drug (DMARD) monotherapy achieves incomplete outcomes and intensive treatment seems preferable. As the relative benefits of combining two DMARDs, one DMARD with glucocorticoids and two DMARDs with glucocorticoids are uncertain we defined them in a factorial trial.

METHODS: A 2-year randomised double-blind factorial trial in patients with RA within 2 years of diagnosis treated with methotrexate studied the benefits of added ciclosporin, 9 months intensive prednisolone or both (triple therapy). The primary outcome was the number of patients with new erosions. Secondary outcomes included Larsen's x-ray scores, disability, quality of life and adverse events.

FINDINGS: 1391 patients were screened and 467 randomised. Over 2 years 132 (28%) changed therapy and 88 (19%) were lost to follow-up. The number of patients with new erosions was reduced by nearly half by adding ciclosporin or prednisolone (p = 0.01 and 0.03); both treatments reduced increases in Larsen's x-ray scores by over 2 units (p = 0.008 and 0.003). A further reduction in erosive damage was seen with combined use of both treatments. Their effects on erosive damage appeared independent. Triple therapy reduced disability and improved quality of life compared with methotrexate; ciclosporin and prednisolone acted synergistically. More patients withdrew because of adverse events with triple therapy, without an increase in…

How strong is the evidence?

Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 1,391 participants or records.

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