Mycophenolate mofetil plus methotrexate versus cyclophosphamide with sequential azathioprine for treatment of Takayasu arteritis.

Abstract

Study the efficacy and safety of mycophenolate mofetil (MMF) combined with methotrexate (MTX) compared to cyclophosphamide (CYC) followed by azathioprine (AZA) to treat active Takayasu arteritis (TAK). Adults with active TAK were randomised in a 2:1 ratio to receive oral MMF plus MTX or intravenous CYC followed by oral AZA. All subjects also received high-dose oral glucocorticoids with a predefined taper. The primary endpoint was overall response rate at week 52, defined as achieving a complete response (CR) or partial response (PR). Secondary endpoints included rates of CR and PR at weeks 28 and 52. A total of 111 patients with TAK were enrolled: 74 in the MMF+MTX group and 37 in the CYC/AZA group, with comparable baseline demographic and clinical features. The overall response rates at 28 and 52 weeks were 58.1% and 55.4% in the MMF+MTX group, respectively, higher than 32.4% at both time points in the CYC/AZA group (P = .011 and .022). CR and PR rates at 28 and 52 weeks were also higher in the MMF+MTX group. Relapse occurred in 4 patients in the MMF+MTX group and 2 in the CYC/AZA group. One serious adverse event, neutropenia with fever, occurred in 1 patient in the CYC/AZA group. Treatment of active TAK with MMF+MTX has more favourable efficacy compared to CYC/AZA. These findings provide evidence to use the combination of MTX and MMF, 2 generally well-tolerated and inexpensive therapies, to treat TAK.