Modified Baron Score is an instrument designed to measure endoscopic activity of ulcerative colitis. It classifies the mucosal inflammation in 4 grades (0=normal, 1=granular mucosa with an abnormal vascular pattern, 2=friable mucosa, 3=microulceration with spontaneous bleeding, 4=gross ulceration with spontaneous bleeding).

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint. Baseline observation carried forward (BOCF) was used for treatment failures.

Mayo Score is an instrument designed to measure disease activity of ulcerative colitis. Mayo subscores for rectal bleeding range from 0 to 3, with higher scores indicating more severe disease.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

Mayo Score is an instrument designed to measure disease activity of ulcerative colitis. Mayo subscores for rectal bleeding range from 0 to 3, with higher scores indicating more severe disease.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

An AE was any untoward medical occurrence in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pre-treatment state. AEs included both SAEs and non-SAEs.

The safety analysis population consisted of all participants who received at least 1 dose of study medication.

The safety analysis population consisted of all participants who received at least 1 dose of study medication.

The intensity grades were defined as follows: mild=does not interfere with participant's usual function; moderate=interferes to some extent with participant's usual function; severe=interferes significantly with participant's usual function.

The safety analysis population consisted of all participants who received at least 1 dose of study medication.

Mayo Score is an instrument designed to measure disease activity of ulcerative colitis. Mayo subscores for rectal bleeding range from 0 to 3, with higher scores indicating more severe disease.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

The total number of participants with laboratory test abnormalities with or without regard to baseline abnormality was assessed. Laboratory parameters included: hematology (hemoglobin, hematocrit, red blood cell [RBC] count, platelet count, white blood cell [WBC] count, total neutrophils, eosinophils, monocytes, basophils, lymphocytes, erythrocyte sedimentation rate); chemistry (blood urea nitrogen and creatinine, glucose, calcium, sodium, potassium, chloride, total bicarbonate, aspartate aminotransferase, alanine aminotransferase, total bilirubin, alkaline phosphatase, uric acid, albumin, total protein; urinalysis (pH, glucose, protein, blood, ketones, nitrites, leukocyte esterase, microscopy (only if urine dipstick was positive for blood, protein, nitrites or leukocyte esterase); other (follicle-stimulating hormone, human chorionic gonadotropin, stool microbiology, creatinine kinase, direct bilirubin, indirect bilirubin, gamma-glutamyl transferase, international normalized ratio.

The safety analysis population consisted of all participants who received at least 1 dose of study medication; n=the number of participants analyzed at that time point in the respective arms.

Vital signs assessment included pulse rate, systolic blood pressure (SBP) and diastolic blood pressure (DBP). Criteria for vital sign values meeting potential clinical concern included: SBP <90 millimeters of mercury (mm Hg) and >=30 mm Hg increase/decrease from baseline, DBP <50 mm Hg and >=20 mm Hg increase/decrease from baseline, pulse rate <40 or >120 beats per minute (bpm),

The safety analysis population consisted of all participants who received at least 1 dose of study medication.

Fecal calprotectin, a very stable marker, is a 36kDa calcium and zinc binding protein which is neutrophil-derived. It represents 60% of cytosolic proteins in granulocytes and is a measurement of neutrophil migration to the gastrointestinal tract.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

CRP is an acute-phase protein which provides an objective criterion of inflammatory activity. CRP has a short half-life (19 hours) and therefore rises early after the onset of inflammation and rapidly decreases after resolution of the inflammation. It is induced by interleukin-6, TNF-alpha and other pro-inflammatory cytokines that are produced within the intestinal lamina propria.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

Mayo subscores for rectal bleeding range from 0 to 3 (0=no blood seen; 1=streaks of blood with stool less than half the time; 2=obvious blood with stool most of the time; 3=blood alone passes).

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Modified Baron Score is an instrument designed to measure endoscopic activity of ulcerative colitis. It classifies the mucosal inflammation in 4 grades (0=normal, 1=granular mucosa with an abnormal vascular pattern, 2=friable mucosa, 3=microulceration with spontaneous bleeding, 4=gross ulceration with spontaneous bleeding). Endoscopic remission is defined as modified Baron Endoscopic Score equal to 0.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Clinical remission is defined as a total Mayo score of 2 points or lower, with no individual subscores exceeding 1 point.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Mayo subscores for rectal bleeding range from 0 to 3 (0=no blood seen; 1=streaks of blood with stool less than half the time; 2=obvious blood with stool most of the time; 3=blood alone passes). A decrease from baseline score indicates improvement.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Endoscopic response is defined as a decrease in modified Baron endoscopic score from baseline of at least 2 points.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Clinical response is defined as a decrease in total Mayo score from baseline of at least 3 points and at least 30 percent (%), with an accompanying decrease in the subscore for rectal bleeding of at least 1 point or an absolute subscore for rectal bleeding of 0 or 1.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint.

Mayo Score is an instrument designed to measure disease activity of ulcerative colitis, with total score ranging from 0 to 12. It consists of 4 subscores (stool frequency, rectal bleeding, findings of flexible proctosigmoidoscopy, and physician global assessment [PGA]), each graded from 0 to 3, with higher scores indicating more severe disease.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

Mayo Score is an instrument designed to measure disease activity of ulcerative colitis. Mayo Score ranges from 0 to 12 points. It consists of 4 subscores, each graded from 0 to 3 with higher scores indicating more severe disease. A Partial Mayo Score (Mayo score without endoscopy) ranges from 0 (normal or inactive disease) to 9 (severe disease) and calculated as the sum of 3 subscores (stool frequency, rectal bleeding and PGA) with each ranging from 0 to 3 (0=normal, 1=mild, 2=moderate, 3=severe). Higher scores indicate more severe disease.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

A 15 to 25 centimeter (cm) biopsy sample of inflamed mucosal tissue was taken from the worst affected area and scored using the Riley Index. The Riley Index is a histologic scoring system for the assessment of the activity and severity of ulcerative colitis, ranging from 0 to 24. It consists of 6 histologic features (acute inflammatory cell infiltrate, crypt abscesses, mucin depletion, surface epithelial integrity, chronic inflammatory cell infiltrate, and crypt architectural irregularities), all scored on a 4-point scale (higher scores indicate more severe disease).

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.

Patient-reported diary data assessed the number of bowel movements (BM) per day when not having a flare and the presence of blood in the stools (rectal bleeding [RB]), if any.

The full analysis set included all available observed data from all randomized participants who completed at least 1 infusion and were either withdrawn as a treatment failure, or had at least 1 valid post-dose measurement on a primary endpoint; n=the number of participants analyzed at that time point in the respective arms.