Abstract
Mepolizumab and reslizumab are anti-interleukin-5 monoclonal antibodies. Mepolizumab has been approved by the Food and Drug Administration (FDA) as add-on therapy for patients 12 years and older with severe asthma with an eosinophil phenotype. Reslizumab is currently under FDA review for approval also as add-on therapy in patients 12 years and older with moderate to severe asthma with an eosinophil phenotype. The differences between the products include route of administration (subcutaneous for mepolizumab and intravenous for reslizumab) and adverse effect risks. Adverse effects seen more commonly with mepolizumab than placebo included herpes zoster that may not be relevant to an adolescent patient but could be relevant for other viral infections. Anaphylaxis, elevations in creatine phosphokinase, and musculoskeletal events were seen in patients treated with reslizumab.
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