The purpose of this study is to evaluate the efficacy of ontamalimab as maintenance therapy treatment of remission, based on composite score of patient-reported symptoms and centrally read endoscopy, in participants with moderate to severe ulcerative colitis (UC).
Participants will receive 1 milliliter (mL) of ontamalimab sterile aqueous buffered solution at an appropriate oncentration to provide an intended dose of drug (25 or 75 mg).
Participants will receive 1 mL of sterile aqueous buffered solution.
Buenos Aires, Argentina
Córdoba, Argentina
San Miguel de Tucumán, Argentina