Protagonist Therapeutics, Inc. is a clinical-stage biopharmaceutical company with a peptide technology platform focused on discovering and developing new chemical entities (NECs) to address significant unmet medical needs. The Company's product pipeline includes PTG-100, PTG-200 and PTG-300. Its primary focus is on developing oral peptide drugs that target biological pathways also targeted by marketed injectable antibody drugs. PTG-100 is an oral, alpha-4-beta-7 (a4b7) integrin-specific antagonist peptide product candidate, which has completed a Phase I clinical trial in normal healthy volunteers (NHVs). PTG-100 is being developed for treatment of moderate-to-severe ulcerative colitis (UC). PTG-200 is an oral Interleukin-23 receptor (IL-23R) antagonist being developed for moderate-to-severe Crohn's disease (CD). PTG-200 is in investigational new drug (IND) enabling studies. PTG-300 is an injectable hepcidin mimetic for treatment of iron overload related rare diseases.