First Biosimilar Drug Approved

FRIDAY, March 6, 2015 (HealthDay News) -- The U.S. Food and Drug Administration has approved the first "biosimilar" drug, meaning it is a biologic product that is "highly similar" to an already approved medication.

Clinical studies showed Zarxio (filgrastim-sndz) had "no clinically meaningful" difference in safety and effectiveness from the anti-cancer drug Neupogen that was approved in 1991, the FDA said Friday in a news release.

"Only minor differences in clinically inactive components are allowable in biosimilar products," the agency said in clarifying its definition of a biosimilar drug.

Zarxio is approved for the same indications as the already-sanctioned drug, including:

Biosimilar drugs are permitted under the Biologics Price Competition and Innovation Act of 2009, part of the Affordable Care Act signed by President Barack Obama in 2010, the FDA said.

The most common clinical side effects of Zarxio include pain in the bones and muscles, and redness, swelling and itching at the injection site. More serious adverse reactions could include spleen rupture, serious allergic reaction and acute respiratory distress syndrome, the FDA said.

Zarxio is produced by Novartis, based in Princeton, N.J.

-- Scott Roberts

MedicalNews
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