Sandoz Makes First Biosimilar Review Look Easy; Will Future Sponsors Be As Lucky?
Oncologic Drugs Advisory Committee’s unanimous endorsement of Neupogen biosimilar amounted to a slam dunk, but other sponsors with more complex biologics and less foreign marketing experience may face greater skepticism from FDA and its experts.
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FDA clinical reviewers moved from traditional “new drug” review mode to determining the evidence needed to demonstrate a follow-on product is highly similar to the reference biologic, Sandoz exec says, describing firm’s interactions with FDA on its filgrastim 351(k) application.
Despite lack of enthusiasm with immunobridging study data, the panel endorsed emergency use in certain at-risk populations, in part because it would be hard to turn down the Moderna booster when an identical EUA had been issued for Pfizer/BioNTech's mRNA vaccine.
Immune responses to a single booster dose of mRNA-1273 would be considered successfully bridged to the two-dose primary series if each of two immunobridging criteria were met, but the mRNA vaccine missed the prespecified success criteria for seroresponse rate, the FDA said.