Orphan drug protection attached to a new claim for Amgen Inc.’s Neupogen (filgrastim) may preclude Sandoz Inc. from adding the same indication to labeling for its biosimilar Zarxio (filgrastim-sndz) in the near future.
On March 30, FDA approved Neupogen, a granulocyte colony-stimulating factor, for treatment of patients acutely exposed to myelosuppressive doses of radiation (hematopoietic syndrome of acute radiation syndrome, H-ARS).