Lackluster Survival Data Likely To Marginalize MacroGenics’ Margenza

While the general lack of an overall survival benefit for MacroGenics’ drug in later-line breast cancer was not surprising, OS data were seen as important for commercial uptake of the drug.

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The lack of an overall survival benefit in the Phase III study of MacroGenics, Inc.’s Margenza (margetuximab-cmkb) in HER2-positive breast cancer means the drug will likely remain a marginal player in the third-line setting of the disease. However, data from an antibody-drug conjugate in development for prostate and lung cancers could prove more meaningful for the company.

Rockville, MD-based MacroGenics said 7 September that the final overall survival (OS) analysis from 536 patients in the SOPHIA trial...

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