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FDA greenlights Protagonist's rusfertide, sold by Takeda as Mimrylo for rare blood cancer

The FDA has approved rusfertide, a weekly injection developed by Protagonist Therapeutics and marketed by Takeda under the name Mimrylo, to treat polycythemia vera.

Regulators gave the go-ahead for rusfertide, a drug created by biotech firm Protagonist Therapeutics. Takeda will commercialize the therapy as Mimrylo. The treatment is administered once a week and is intended for patients with polycythemia vera, a slow-growing blood cancer that causes excess red blood cells and raises the risk of heart attacks, strokes and clots.

Why it matters

It offers the first FDA-approved therapy specifically for polycythemia vera, addressing a serious risk for patients.

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FDArusfertideMimrylopolycythemia verarare blood cancerweekly injectionProtagonist TherapeuticsTakeda
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