New study checks MS drug in breastmilk: is it safe for babies?
NCT ID NCT04998851
First seen Jan 17, 2026 · Last updated May 01, 2026 · Updated 14 times
Summary
This study looked at how much of the multiple sclerosis (MS) drug ocrelizumab passes into breastmilk and whether it affects babies' immune cells (B cells). Twenty-six breastfeeding women with MS or clinically isolated syndrome (CIS) and their healthy infants took part. Researchers measured drug levels in breastmilk and checked infants' B cell counts one month after the mother's first postpartum dose.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Brigham and Womens Hospital
Boston, Massachusetts, 02115, United States
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Hosp. Clinico San Carlos
Madrid, 28040, Spain
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Hospital of the University of Pennsylvania
Philadelphia, Pennsylvania, 19104, United States
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Memorial Healthcare Institute for Neurosciences and Multiple Sclerosis
Owosso, Michigan, 48867, United States
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Northwestern Memorial Hospital
Chicago, Illinois, 60611-2987, United States
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Queen Mary University of London
London, EC1M 6BQ, United Kingdom
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University Of Colorado
Aurora, Colorado, 80045, United States
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University of California San Francisco
San Francisco, California, 94158, United States
Conditions
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