Can stem cells tame Crohn's? new trial tests Long-Term relief
NCT ID NCT00543374
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This phase 3 trial tested a stem cell treatment called PROCHYMAL in 98 people with moderate-to-severe Crohn's disease who had already responded to an earlier stem cell dose. The goal was to see how long the benefit lasts and whether a repeat dose can bring back symptom relief. Participants received four intravenous infusions over two weeks, with a possible repeat course.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- PROCHYMAL (adult human mesenchymal stem cells)
- What this could lead to
- If successful, this could provide a new treatment option for people with Crohn's disease who don't respond to standard therapies, helping them achieve longer periods of symptom control.
- What could go wrong
- This is a small phase 3 trial (98 people) and results may not apply to all patients. The treatment may not work for everyone, and there could be side effects from the stem cell infusion.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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98 people
The number who actually took part.
- Started
-
Sep 2007
- Finished
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Apr 2011
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 70 years
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Participation in Osiris Protocol 603, with drop of at least 100 points in CDAI at Day 28 Exclusion Criteria: * Substance abuse * Failure to receive full dose of all interventions in Protocol 603
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Get notified about this study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Advanced Clinical Research Institute
Anaheim, California, 92801, United States
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Allegheney Center for Digestive Health
Pittsburgh, Pennsylvania, 15212, United States
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Atlanta Gastroenterology Associates
Atlanta, Georgia, 30342, United States
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Baylor University Medical Center
Dallas, Texas, 75246, United States
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Borland-Groover Clinic
Jacksonville, Florida, 32256, United States
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Brigham and Womens Hospital
Boston, Massachusetts, 02115, United States
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Carle Clinic Association
Urbana, Illinois, 61801, United States
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Center for Clinical Studies
Dearborn, Michigan, 48124, United States
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Center for Digestive Health
Troy, Michigan, 48098, United States
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Charlotte Gastroenterology and Hepatology
Charlotte, North Carolina, 28207, United States
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Clinical Pharmacology Study Group
Worcester, Massachusetts, 01610, United States
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Clinical Research of West Florida
Clearwater, Florida, 33765, United States
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Cotton-O'Neil Clinical Research Center
Topeka, Kansas, 66606, United States
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Dartmouth Hitchcock Medical Center
Lebanon, New Hampshire, 03756, United States
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Dayton Science Institute
Dayton, Ohio, 45415, United States
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Digestive and Liver Disease Specialists
Norfolk, Virginia, 23502, United States
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Gastroenterology Center of Connecticut
Hamden, Connecticut, 06518, United States
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Gastroenterology Center of the Midsouth
Germantown, Tennessee, 37138, United States
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Gastroenterology Research Associates
Cedar Knolls, New Jersey, 07927, United States
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Gastroenterology United of Tulsa
Tulsa, Oklahoma, 74135, United States
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Gulf Coast Research
Baton Rouge, Louisiana, 70808, United States
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Health Sciences Centre
Winnipeg, Manitoba, R3A 1R9, Canada
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Holy Name Hospital
Teaneck, New Jersey, 07666, United States
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Indiana University Medical Center
Indianapolis, Indiana, 46202, United States
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London Health Sciences Centre
London, Ontario, N6A 5A5, Canada
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Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
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McGuire Research Institute
Richmond, Virginia, 23249, United States
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Memorial Hermann Hospital
Houston, Texas, 77030, United States
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Metropolitan Gastroenterology Group
Chevy Chase, Maryland, 20815, United States
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Mount Sinai Hospital
Toronto, Ontario, M5G 1X5, Canada
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Mount Sinai School of Medicine
New York, New York, 10029, United States
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Nashville GI Specialists
Nashville, Tennessee, 37205, United States
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National Institutes of Health
Bethesda, Maryland, 20892, United States
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Options Health Research
Tulsa, Oklahoma, 74137, United States
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Pinehurst Medical Clinic
Pinehurst, North Carolina, 28734, United States
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Rochester General Hospital
Rochester, New York, 14621, United States
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Rochester Institute for Digestive Diseases
Rochester, New York, 14607, United States
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Seattle Gastroenterology Associates
Seattle, Washington, 98133, United States
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Shafran Gastroenterology Center
Winter Park, Florida, 32789, United States
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St Louis Center for Clinical Studies
St Louis, Missouri, 63128, United States
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University Hospital and Medical Center
Stony Brook, New York, 11794, United States
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University of Alberta Hospital
Edmonton, Alberta, T6G 2X8, Canada
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University of Calgary
Calgary, Alberta, T2N 4N1, Canada
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University of California, San Francisco
San Francisco, California, 94115, United States
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University of Chicago Medical Center
Chicago, Illinois, 60637, United States
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University of Kentucky Hospital
Lexington, Kentucky, 40536, United States
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University of Louisville Hospital
Louisville, Kentucky, 40202, United States
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University of Minnesota Hospital
Minneapolis, Minnesota, 55455, United States
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University of Pittsburgh
Pittsburgh, Pennsylvania, 15213, United States
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University of Southern California University Hospital
Los Angeles, California, 90033, United States
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University of Texas Medical Branch
Galveston, Texas, 77555, United States
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University of Vermont
Burlington, Vermont, 05401, United States
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Vanderbilt University Medical Center
Nashville, Tennessee, 37232, United States
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Venture Research Institute
Miami, Florida, 33162, United States
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Veteran's Administration Medical Center (does not require vet status)
Long Beach, California, 90822, United States
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Wake Forest University
Winston-Salem, North Carolina, 27157, United States
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Weill Cornell Medical College
New York, New York, 10028, United States
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Western States Clinical Research
Wheat Ridge, Colorado, 80033, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Staph bacteria may hold clues to painful skin rashes in IBD patients on Anti-TNF therapy
- Swallow a camera pill to diagnose Crohn's? trial puts it to the test
- Can a drug plus surgery heal Crohn's fistulas for good?
- Do vegan yogurts and meat substitutes really boost your gut?
- AI reads scans to forecast Crohn's complications