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Home » Protagonist resumes rusfertide testing after FDA lifts clinical hold
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Protagonist resumes rusfertide testing after FDA lifts clinical hold

Oct. 11, 2021
By Michael Fitzhugh
Shares of Protagonist Therapeutics Inc. (NASDAQ:PTGX) climbed 93.9% on Oct. 11 after the FDA removed a full clinical hold on studies of the rusfertide, the company's investigational treatment for the blood disorders polycythemia vera and hereditary hemochromatosis. Triggered by a finding of malignant skin tumors in mice treated with the drug disclosed on Sept. 17, the FDA's three-weeks-ago hold had pushed Protagonist shares down by as much as 72%.
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