Company Description:Protagonist Therapeutics, Inc. discovers and develops peptide-based therapeutic drugs. It is developing rusfertide (PTG-300), an injectable hepcidin mimetic that is in Phase II clinical trials for the treatment of patients with polycythemia vera and hereditary hemochromatosis. PN-943, an oral, alpha-4-beta-7 integrin-specific antagonist peptide, is in clinical trials.