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  • Title: Efficacy, tolerability, and predictors of response to infliximab therapy for Crohn's disease: a large single centre experience.
    Author: Sprakes MB, Ford AC, Warren L, Greer D, Hamlin J.
    Journal: J Crohns Colitis; 2012 Mar; 6(2):143-53. PubMed ID: 22325168.
    Abstract:
    BACKGROUND: Infliximab is licenced for use in Crohn's disease (CD). Trial data demonstrate that infliximab is effective for inducing remission of active CD, healing fistulising CD, and preventing relapse once in remission. However, long-term data regarding efficacy, safety, and predictors of response are still emerging. AIM: To examine these issues in a large cohort of patients who received infliximab for CD. METHODS: A retrospective analysis of prospectively collected data was performed for 210 patients receiving infliximab for luminal or fistulising CD. Response to infliximab induction therapy, and sustained clinical benefit, were assessed by a decrease in Harvey-Bradshaw Index (HBI) of ≥ 2 points. Remission was defined as an HBI ≤ 4. Physician's global assessment was used where HBI could not be obtained. Demographic and disease factors that may predict response to therapy were analysed by Kaplan-Meier plots and univariate and multivariate analyses. RESULTS: Overall, 173 (82.4%) patients responded to infliximab induction, with 114 (65.9%) achieving sustained clinical benefit. Almost 40% of the study cohort had an HBI ≤ 4, indicating remission, at last point of follow-up (median 24 months). Concomitant immunosuppression predicted sustained clinical benefit in the first 6 months of therapy (P=0.03). An inflammatory disease phenotype (P=0.04 univariate analysis, P=0.03 Kaplan Meier analysis) and male gender (P=0.03) also predicted sustained clinical benefit. Episodic therapy was associated with an increased likelihood of secondary non-response. Adverse events, including malignancies, were few. CONCLUSION: In this single centre study, infliximab was efficacious and well-tolerated in CD.
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