How Kyprolis Overcame Serious Safety Fears To Reach Myeloma Market With Clean Label

FDA had flagged life-threatening safety issues that could have delayed approval of Onyx’s myeloma drug Kyprolis. But in the end, the agency instead opted for explicit instructions in the label to avoid risks, stopping short of a boxed warning, and a sub-study in a Phase III trial to fully assess cardiac and pulmonary risks.