An Extension Study of Oral Ozanimod for Moderately to Severely Active Crohn's Disease

Percentage of Participants With Clinical Remission

Clinical remission is defined as a Crohn's Disease Activity Index (CDAI) score of \< 150. The CDAI is a composite score that is used to measure the clinical activity of Crohn's disease (CD). The CDAI uses a questionnaire with 8 disease activity variables: number of soft/liquid stools, severity of abdominal pain, general well-being, presence of complications, need for antidiarrheal drugs, presence of an abdominal mass, hematocrit, and deviation in body weight. The sub scores of number of soft/liquid stool, severity of abdominal pain (0 \\\[none\\\] to 3 \\\[Severe\\\]), general well-being (0 \\\[well\\\] to 4 \\\[terrible\\\] were summed over the 7 days prior to each visit. Additionally, the remaining predictors were also noted and weighted to create the total CDAI score which ranged from 0-600 with a higher score indicating a worse outcome.

Time frame: At weeks 48, 96, 144, 192, 240

Number of Participants With Treatment Emergent Adverse Events (TEAEs)

A treatment-emergent adverse event (TEAE) is any AE that emerges or worsens between the day of the first dose of Open-label Extension Study and 90 days after the last dose of Open-label Extension Study. An Adverse Event (AE) is defined as any new untoward medical occurrence or worsening of a preexisting medical condition in a clinical investigation participant administered study treatment and that does not necessarily have a causal relationship with this treatment. Serious Adverse Events (SAEs) is any untoward medical occurrence that, at any dose: results in death; is life-threatening; requires inpatient hospitalization; results significant disability; or is a congenital anomaly/birth defect.

Time frame: From first dose to 90 days post last dose (up to approximately an average of 19 months and a maximum of 65 months)