Friday, August 12, 2022
Genentech, a member of the Roche Group, announced that the U.S. Food and Drug Administration (FDA) has approved a supplemental New Drug Application (sNDA) for Xofluza® (baloxavir marboxil) for the treatment of acute uncomplicated influenza in otherwise healthy children aged five to less than 12 years of age who have been symptomatic for no more than 48 hours. This marks the first single-dose oral influenza medicine approved for children in this age group. Additionally, the FDA approved Xofluza for the prevention (post-exposure prophylaxis) of influenza in children aged five to less than 12 years of age following contact with someone with influenza.
“Despite the ongoing COVID-19 pandemic, influenza continues to be a threat to public health, and effective influenza antivirals remain critical to alleviating the burden on healthcare systems,” said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. “Xofluza has proven to be an important tool in fighting and preventing influenza in adults as well as adolescents, and we are pleased to now offer households and younger children our single-dose oral treatment.”
According to the Centers for Disease Control and Prevention, influenza can be a serious illness for young children. During the ongoing COVID-19 pandemic, there have been significantly fewer influenza cases likely due in large part to social distancing and mask wearing. However, in the U.S. 2018-2019 influenza season, there were more than 6 million illnesses, thousands of hospitalizations and more than 100 deaths for children aged five to 17 caused by influenza.
“Historically, school-aged children have played a significant role in the community transmission of influenza. The annual influenza vaccine continues to be the most important first step to prevent illness in children, though there can still be breakthrough cases where antiviral treatment is needed,” said Dr. Pedro Piedra, miniSTONE-2 study investigator and professor of molecular virology and microbiology, pediatrics at Baylor College of Medicine. “Today’s FDA approval provides children with a single-dose antiviral option, Xofluza, to treat influenza."
The FDA approval is based on results from two Phase III studies, miniSTONE-2 and BLOCKSTONE. miniSTONE-2 evaluated Xofluza compared with oseltamivir in otherwise healthy children and included patients aged five to less than 12 years with an influenza infection and displaying influenza symptoms for no more than 48 hours. BLOCKSTONE evaluated Xofluza compared with placebo as a preventive treatment for household members (adults and children) who were living with someone with influenza. The results from these studies were published in The Pediatric Infectious Disease Journal and The New England Journal of Medicine respectively.
Adverse events reported in at least 5% of pediatric patients (ages five to 11 years) treated with Xofluza included vomiting (5%) and diarrhea (5%).
Xofluza is already FDA-approved to treat influenza in people 12 years of age and older who have had influenza symptoms for no more than 48 hours and who are otherwise healthy or at high risk of developing influenza-related complications. Xofluza is also approved to prevent influenza in people 12 years of age and older following contact with someone with influenza (known as post-exposure prophylaxis). Xofluza is available as a one-dose, single tablet.