Skin tumors in mice force Protagonist to halt lead program, crushing stock
Protagonist Therapeutics just can’t catch a break.
Six months after the Newark, CA-based biotech unveiled grand plans to launch its lead candidate for blood disorders into a Phase III trial, the FDA has slapped the program with a clinical hold. The halt — which applies to all trials involving the candidate, rusfertide — comes after skin tumors were discovered in mice treated with the drug, according to Protagonist.
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