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  • Title: Efficacy and safety of biologic therapies for systemic lupus erythematosus treatment: systematic review and meta-analysis.
    Author: Borba HH, Wiens A, de Souza TT, Correr CJ, Pontarolo R.
    Journal: BioDrugs; 2014 Apr; 28(2):211-28. PubMed ID: 24190520.
    Abstract:
    OBJECTIVES: The objectives of this study were to evaluate the efficacy, safety, and tolerability of biologic drugs compared with placebo for systemic lupus erythematosus (SLE) treatment. METHODS: A systematic review evaluating the efficacy and safety of biologic therapies compared with placebo in adult SLE patients treatment was performed. Data from studies performed before September 2013 were collected from several databases (MEDLINE, Cochrane Library, SCIELO, Scopus, and International Pharmaceutical Abstracts). Study eligibility criteria included randomized, double-blind, placebo-controlled trials; regarding treatment with biologic agents in SLE adult patients; and published in English, German, Portuguese, and Spanish. Extracted data were statistically analyzed in a meta-analysis using the Review Manager (RevMan) 5.1 software. Efficacy outcomes included the SELENA-SLEDAI (Safety of Estrogens in Lupus Erythematosus National Assessment version of the SLE Disease Activity Index) score, the SRI (Systemic Lupus Erythematosus Responder Index), normalization of low C3 (<90 mg/dL), anti-double-stranded DNA positive to negative, and no new BILAG (British Isles Lupus Assessment Group index) 1A or 2B flares. Data on safety profile included adverse events, serious and severe adverse events, death, malignancy, infections, and infusion reactions. We also evaluated withdrawals from treatment due to lack of efficacy or adverse events. RESULTS: Thirteen randomized placebo-controlled trials met the criteria for data extraction for systematic review. A meta-analysis regarding the efficacy and safety of belimumab compared with placebo involving four of these trials was undertaken and the remainder contributed to a meta-analysis of the safety of biologic agents. In addition, two trials allowed the performance of a meta-analysis regarding the efficacy and safety of rituximab compared with placebo. Belimumab was more effective than placebo in most evaluated outcomes. No significant differences in the safety and tolerability data were observed between the belimumab and placebo groups. No differences were observed between the rituximab and placebo groups for the efficacy outcomes or safety parameters. Extracted data from the 13 studies were pooled, allowing assessment of the safety of biologic drugs. The meta-analysis revealed a satisfactory safety profile of these agents when used for SLE treatment, as there were no significant differences between the two evaluated groups (biologic agents and placebo) for all outcomes analyzed. CONCLUSION: Belimumab exhibited a satisfactory profile regarding efficacy, safety, and tolerability. Rituximab showed no superiority over placebo in terms of efficacy, despite its suitable safety profile. Biologic agents exhibited a good safety profile for SLE treatment, indicating that these agents are promising therapies and should be further investigated.
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