Etanercept is a recombinant human soluble tumor necrosis factor-alpha (TNFα) receptor. It is is a small protein, with a molecular weight of 75 kDa (p75), that binds to TNFα and decreases its role in inflammatory diseases such as rheumatoid arthritis, juvenile rheumatoid arthritis, psoriasis, psoriatic arthritis, and ankylosing spondylitis. It is co-marketed by Amgen and Wyeth under the trade name Enbrel.

Enbrel - Immunex - Etanercept. FDA-approved to treat rheumatoid arthritis, psoriasis, ankylosing spondylitis, psoriatic arthritis, and juvenile rheumatoid arthritis. Official pharmaceutical website.
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