A Lactation Study in Women Receiving Treatment With Ozanimod

Inclusion Criteria: * Adult female participant is already planning or currently being treated with ozanimod per the current locally approved prescribing information. * Adult female participant has delivered a single normal-term infant (at least 37 weeks gestation). * Adult female participant is at least 2 weeks postpartum but not more than 12 months postpartum by Study Visit 1. * Infant participant has normal weight for gestational age (above tenth percentile) at birth. Exclusion Criteria: * Adult participant is pregnant, planning to become pregnant, or are of childbearing potential and not using an effective contraceptive method. * Adult participant is not breastfeeding or pumping milk. * Adult participant has received any live vaccinations within 4 weeks prior to the start of ozanimod treatment. * Infant participant was born less than 37 weeks gestation Other protocol-defined criteria apply.