MEDI-493 was safe and well-tolerated in this high risk pediatric population. Mean serum concentrations of MEDI-493 that have been shown to produce a 2-log reduction in pulmonary RSV titer in cotton rats were maintained when 10 or 15 mg/kg MEDI-493 was given every 30 days to pediatric patients at high risk for serious RSV disease. Monthly doses of 15 mg/kg maintained concentrations of > 40 microg/ml for the majority of patients.
MEDI-493 was safe and well-tolerated. Monthly intramuscular doses of 15 mg/kg maintained mean trough serum concentrations that were above 40 microg/ml (the value associated with 99% reduction of pulmonary RSV in the cotton rat model). These concentrations were similar to those previously reported with i.v. administration of MEDI-493.
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