Could a lower dose of a transplant drug be better for blood cancer patients?
NCT ID NCT05436418
First seen Nov 01, 2025 · Last updated Jun 23, 2026 · Updated 40 times
Summary
This study is testing whether a lower dose of the drug cyclophosphamide, given after a stem cell transplant, can prevent graft-versus-host disease (a common complication where donor cells attack the patient's body) while still being effective. The trial involves 260 adults with blood cancers who are receiving stem cells from a related donor. Participants will get different doses of cyclophosphamide along with other immune-suppressing drugs, and researchers will track their recovery and side effects for up to 5 years.
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This is a summary of
the original study
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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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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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City of Hope
NOT_YET_RECRUITINGDuarte, California, 91010, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••
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National Institutes of Health Clinical Center
RECRUITINGBethesda, Maryland, 20892, United States
Contact Phone: •••-•••-••••
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
cyclophosphamide
What this could lead to
If successful, this could lead to a safer, more effective way to prevent graft-versus-host disease after stem cell transplants, improving outcomes for blood cancer patients.
What could go wrong
This is an early-phase trial (Phase I/II) with a small number of participants, so results may not apply to everyone. Lowering the dose might also reduce its effectiveness in preventing graft-versus-host disease or controlling the cancer.
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.