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Motavizumab (proposed INN, trade name Numax) is a humanized monoclonal antibody. It is being investigated by MedImmune (today a subsidiary of AstraZeneca) for the prevention of respiratory syncytial virus infection in high-risk infants.[1] As of September 2009[update], it was undergoing Phase II and III clinical trials.[2]
| Monoclonal antibody | |
|---|---|
| Type | Whole antibody |
| Source | Humanized (from mouse) |
| Target | RSV glycoprotein F |
| Clinical data | |
| Trade names | Numax |
| Routes of administration | Intravenous |
| ATC code | |
| Pharmacokinetic data | |
| Protein binding | None |
| Identifiers | |
| CAS Number | |
| DrugBank | |
| ChemSpider |
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| UNII | |
| KEGG | |
| Chemical and physical data | |
| Formula | C6476H10014N1706O2008S48 |
| Molar mass | 145438.16 g·mol−1 |
  (what is this?) (verify) | |
In June 2010, the FDA Antiviral Drugs Advisory Committee declined to endorse MedImmune's request for licensure of Motavizumab in a 14 to 3 decision. The members of that panel cited several reasons for the decision, and many were concerned that "we're not looking at a product that has evidence of superiority in terms of efficacy" when compared to the already available monoclonal antibody Palivizumab.[3]
In December 2010, AstraZeneca in a stock market statement stated that it would be writing down $445m (£286m) after discontinuing a key development programme for Motavizumab. The company stated that it would no longer develop Motavizumab for the prevention of respiratory syncytial virus (RSV), and as a result was withdrawing its licence application to the US Food and Drug Administration. It added that it would continue to develop Motavizumab for other treatments of RSV.[4]
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