Biosimilars Still Flummoxed By Neulasta: Sponsors Now 0 For 2 At FDA

Sandoz announces 'complete response' letter for its pegfilgrastim 351(k) filing, suggesting it’s a tough molecule to crack at the agency.

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Sandoz Inc. may have the best handle on biosimilar development in the US, but has missed in its first time at bat against Amgen Inc.'s Neulasta (pegfilgrastim), suggesting that pegylated molecules could pose significant development challenges for biosimilar sponsors.

Sandoz parent Novartis AG included a note deep in its July 19 second quarter earnings announcement that a "complete...

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