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Can lower drug doses make stem cell transplants safer for seniors?

NCT ID NCT05849207

Disease control Sponsor: Ronald Paquette Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Aug 06, 2026 · Updated 4 times

Summary

This study is for people aged 65 and older with blood cancers who are getting a stem cell transplant. Researchers want to see if giving a lower dose of the drug cyclophosphamide after the transplant can reduce serious side effects while still controlling the cancer. The trial will test four different dose levels in a small group of 26 participants to find the safest and most effective dose.

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 help older patients receive stem cell transplants with fewer severe side effects, making the treatment safer and more tolerable.
What could go wrong
This is a very early phase 1 trial with only 26 participants, so results may not apply broadly. Lowering the dose might increase the risk of graft-versus-host disease or transplant failure.

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 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 26 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2023

Expected to finish

Jul 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

65 years and older

Sex

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patient age \>/= 65 years * Patient and related Donor (if applicable) sign the Informed Consent Form for the study. If donor is unrelated, donor does not sign Informed Consent Form and this will not affect recipient study eligibility. * Patient meets standard criteria for allogeneic stem cell transplant * Patient is deemed suitable to receive Flu/TBI 800 conditioning regimen as standard of care transplant * Donor is willing to donate peripheral blood stem cells Exclusion Criteria: * Patient has a diagnosis of myelofibrosis * Patient has high titer antibodies (\>10,000 mean fluorescent intensity) against one or more donor HLA antigens * Patient has undergone prior autologous or allogeneic stem cell transplant * Requiring sedation for cardiac MRIs. * Prohibited Implants and/or Devices: * Mechanical, magnetic or electrical activated implants (i.e. cardiac pacemakers, neurostimulators and infusion pumps) * Ferromagnetic implants and ferromagnetic foreign bodies, such as intracranial, aneurysm clips, shrapnel and intraocular metal chips as these could become dislodged. * Subjects with claustrophobia, problems being in enclosed spaces, or inability to lie supine.

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Conditions

The condition(s) this trial relates to.

hematopoietic and lymphoid cell neoplasm hematopoietic and lymphoid system neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hematologic malignancies

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Cedars-Sinai Medical Center

    RECRUITING

    Los Angeles, California, 90048, United States

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