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Drug Safety Evaluations

Efficacy and safety of etanercept in chronic immune-mediated disease

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Abstract

Introduction: TNF-α inhibitors have demonstrated efficacy in large, randomized controlled clinical trials either as monotherapy or in combination with other anti-inflammatory or disease-modifying antirheumatic drugs in the treatment of chronic inflammatory immune-mediated diseases. Etanercept is a fusion protein that acts as a ‘decoy receptor’ for TNF-α.

Areas covered: This paper evaluates the efficacy and safety of etanercept in patients with chronic inflammatory immune-mediated diseases.

Expert opinion: Etanercept was first approved for the treatment of rheumatoid arthritis (RA) and subsequently of chronic plaque psoriasis, psoriatic arthritis, ankylosing spondylitis and juvenile RA. Etanercept as other TNF-α inhibitors, particularly infliximab, may be administered off-label to treat other chronic inflammatory immune-mediated diseases such as systemic sclerosis, Behcet disease, systemic lupus erythematosus, polymyositis, dermatomyositis and mixed connective tissue disease. Early etanercept treatment prevents joint damage and helps to avoid long-term disability in arthritis. Etanercept administered at a dose of 50 mg once weekly is effective in inducing an earlier remission of RA, and etanercept 50 mg twice weekly may favor a more rapid improvement of psoriasis and psoriatic arthritis. Etanercept and adalimumab may exert beneficial effects on lipid profile and improve endothelial dysfunction. Appropriate screening tests for latent tuberculosis, hepatitis B virus and hepatitis C virus should be performed before starting etanercept. TNF-α inhibitors including etanercept are contraindicated in patients with demyelinating diseases.

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