Adalimumab monotherapy versus combination therapy with immunomodulators in patients with Crohn's disease: a systematic review and meta-analysis.

Combination therapy with infliximab and azathioprine has been shown to be superior to either treatment alone in Crohn's disease (CD). However, the benefit of combining adalimumab with an immunomodulator remains controversial. The aim of this study was to compare the efficacy of adalimumab monotherapy with combination therapy for induction and maintenance of response and remission in CD using a meta-analysis of the current literature.