Expanded Indication for Genentech Flu Drug

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FDA has approved a Genentech supplemental NDA for Xofluza (baloxavir marboxil) for treating acute, uncomplicated influenza in people 12 years of age and older who have been symptomatic for no more than 48 hours and who are at high risk of developing flu-related complications. Xofluza was approved a year ago for the same indication in otherwise healthy people. It works by inhibiting polymerase acidic endonuclease, an enzyme essential for viral replication, the company says.

 

The expanded indication was approved based on results from the Phase 3 CAPSTONE-2 study of a single dose of 40 mg or 80 mg of Xofluza compared to oseltamivir (75 mg twice daily for five days), or placebo in people 12 years or older who met criteria for being at high risk of complications from the flu. Data showed that Xofluza significantly reduced the time to improvement of flu symptoms compared to placebo, including in people infected with the flu Type B virus, the company says. Adverse events reported in at least 1% of adult and adolescent subjects treated included diarrhea (3%), bronchitis (3%), nausea (2%), sinusitis (2%) and headache (1%), it says.

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