New Flu Vaccine Framework Needed: Gottlieb
FDA commissioner Scott Gottlieb says FDA needs to develop a science-based framework that includes the regulatory tools and guidances to evaluate cell-based and recombinant technology flu vaccines. “Ultimately, our investment will provide regulatory clarity for this kind of new technology,” Gottlieb said in 3/8 testimony before a House Committee on Energy and Commerce Subcommittee on Oversight and Investigations hearing on preparedness and response to seasonal influenza.
According to Gottlieb, some studies have found that cell-based and recombinant vaccines are more efficacious, or could be more efficacious, than egg-based vaccines, but more data and analyses are needed. As one step to better understand the differences between egg-based and cell-based technologies, he said, FDA is using Centers for Medicare and Medicaid Services data to compare Medicare patients who received a cell-based vaccine to those who received an egg-based vaccine to determine which vaccine was more effective in that population.
He also said the agency is working to develop more effective cell lines that can be better scaled through continuous manufacturing. “We’re also looking at how we develop a more robust recombinant vaccine manufacturing process to increase yield, while reducing cost,” he added. “Continuous manufacturing holds great promise for both cell-based and recombinant vaccines, because supply could be more easily ramped up on short notice. This would allow us to more rapidly address newly emerging strains or strain drift. Getting all the necessary preparatory work done is one of the limiting steps of egg-based technologies.”