Safety, Tolerability, Pharmacokinetics and Pharmacodynamics Study of MT-1303 in Subjects With Inflammatory Bowel Disease

Inclusion Criteria: * A body mass index (BMI) ranging from 16 to 34 kg/m2 * Subjects who were diagnosed as Crohn's Disease or Ulcerative Colitis at least 6 months prior to Screening, clinically confirmed either by radiological, endoscopic or histological examination. * Subjects who have had at least one flare within 18 months prior to Screening. * Confirmed medical records of inflammatory lesions in intestinal tract Exclusion Criteria: * Present or past history of clinically significant gastrointestinal surgery. * Present or past history of clinically significant stenosis, stricture or fistula in small intestine or colon. * Known hypersensitivity to any formulation excipients.