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Not yet recruitingNCT07896928Updated Oct 28, 2026

Study of Allogeneic Stem Cell Transplant in Myelodysplastic Syndrome Following Conditioning With Fludarabine and Total Body Irradiation 800 cGy

A Phase 2 interventional study of Allogeneic Stem Cell Transplant in MDS, Myelodysplastic Syndrome MDS and Myelodysplastic Syndrome (MDS), sponsored by Ronald Paquette. Not yet recruiting at 1 site in United States. Per ClinicalTrials.gov, last updated 2026-10-28.

Sponsored by Ronald Paquette · Phase 2, Interventional, and Treatment

Updated Oct 28, 2026Title changedNewly registeredGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 1,363 studies in Myelodysplastic Syndromes with a site in United States — 176 open to participants now, 280 under way, 17 of them phase 3. Myelodysplastic Syndromes · United States.

Planned enrollment
809th of 1,189
20 · median 35
Started
2026
with 30 others
Phase 2
520 of 1,363
55 open now
Primary completion
2030-12
later than 253 of 274 live
Registered
1,363rd of 1,363
by date

Among the 1,363 studies in Myelodysplastic Syndromes with a site in United States, this one is the 809th largest by planned enrollment of the 1,189 interventional ones, is one of 31 that started in 2026, is one of 520 in phase 2, reaches primary completion later than 253 of the 274 other live ones, and was the 1,363rd registered.

By phase

1,363 studies; the count open now beside each. This study's row is marked.

Phase 2this study520 · 55 open
Phase 1384 · 56 open
Phase 1/2188 · 19 open
Observational94 · 25 open
No phase83 · 12 open
Phase 370 · 5 open
Phase 2/312 · 2 open
Other kind6 · 2 open
Phase 46 · 0 open

By the year they started

First in 1984; this study’s year is marked. 31 started in 2026.

Size and results

Median enrollment 35 across the 1,189 interventional studies, 145 across the 94 observational. Of the 1,000 that completed or were terminated, 465 (47%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 1,363 studies in Myelodysplastic Syndromes with a site in United States, or all of them as a file.
02

Study summary

This is a single center phase II study of allogeneic stem cell transplantation in MDS who are unlikely to benefit from conventional therapy. Patients will undergo standard allogeneic stem cell transplant protocol following standard Flu/TBI 800 conditioning, PBSC transplant, and GVHD prophylaxis with PTCy and tacrolimus.

03

Conditions studied

  • MDS
  • Myelodysplastic Syndrome MDS
  • Myelodysplastic Syndrome (MDS)
  • Myelodysplastic Syndrome

Keywords

  • fludarabine
  • MDS low risk
  • allogeneic stem cell transplant
04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • MDS diagnosis and:

    • Very low, low, or low-intermediate risk by IPSS-M. This can be determined using the online calculator: https://mds-risk-model.com/. Must be , refractory or ineligible (due to serum erythropoietin level >500 U/L) for erythropoiesis stimulating agent (ESA). Prior luspatercept or imetelstat is permitted. Transfusion-dependent requiring >4 units packed red blood cells (PRBCs) over an 8 week period during the 16 weeks before enrollment. or
    • TP53 mutation/deletion with combined VAF \< 50%
  • Meets standard criteria for stem cell transplant
  • Patient and related Donor (if applicable) must sign the Form for the study. If donor is unrelated, donor does not sign Informed Consent Form and this will not affect recipient study eligibility
  • Patient is deemed suitable to receive Flu/TBI 800 conditioning regimen as standard of care transplant.

Exclusion criteria

Exclusion Criteria:

  • Prior therapy with hypomethylating agent
  • Prior or allogeneic stem cell transplant
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Single Arm

    Procedure: Allogeneic Stem Cell Transplant

Interventions

  • ProcedureAllogeneic Stem Cell Transplant

    Standard RIC with fludarabine TBI-800 cGy. GVHD prophylaxis with cyclophosphamide on days +3 and +4, with dose established by ongoing GeriBMT trial, and tacrolimus/mycophenolate beginning day +5

06

What researchers measure

Primary outcomes

  1. Overall Survival (OS)

    Evaluate the 1-year OS of two groups of MDS patients following allogeneic stem cell transplantation: transfusion-dependent lower-risk patients and patients with TP53 mutations/deletions with VAF \<50%.

    Time frame: 1 year following transplantation

Secondary outcomes

  1. Time to neutrophil and platelet engraftment

    Measure the time to neutrophil and platelet engraftment

    Time frame: 30 days after PTCy Administration

  2. Rate of Acute Graft-versus-host disease (GVHD)

    Evaluate the rate of acute GVHD by 100 days

    Time frame: 100 days after PTCy Administration

  3. Severity of Acute Graft-versus-host disease (GVHD)

    Evaluate the severity of acute GVHD by 100 days

    Time frame: 100 days after PTCy Administration

  4. Rate of Acute Graft-versus-host disease (GVHD)

    Evaluate the rate of acute GVHD by 1 year

    Time frame: 1 year after PTCy Administration

  5. Severity of Acute Graft-versus-host disease (GVHD)

    Evaluate the severity of acute GVHD by 1 year

    Time frame: 1 year after PTCy Administration

  6. Non-relapse mortality

    Assess rate of non-relapse mortality at 30 days and 1 year

    Time frame: 30 days after PTCy Administration, 1 year after PTCy Administration

  7. Relapse Rate

    Determine the relapse rate at 1 year

    Time frame: 1 year after PTCy Administration

  8. GVHD-free relapse-free survival (GRFS)

    Calculate the rate of GVHD-free relapse-free survival (GRFS) at 1 year

    Time frame: 1 year after PTCy Administration

  9. Transfusion-independence

    Determine the frequency of transfusion-independence at 1 year

    Time frame: 1 year after PTCy Administration

07

Study locations

1 site
  • Cedars-Sinai Medical Center
    Los Angeles, California 90048, United States
    • Clinical Trial Recruitment Navigator · ContactGroupCancerTrailInformation@cshs.org · 310-423-5842
    • Ronald Paquette, MD · Contactronald.paquette@csmc.edu
    • Ronald Paquette, MD · Principal investigator
    • John Chute, MD · Sub investigator
    • Justin Darrah, MD · Sub investigator
    • Akil Merchant, MD · Sub investigator
    • Noah Merin, MD, PhD · Sub investigator
    • Joshua Sasine, MD, PhD · Sub investigator
    • Hannah Lee, MD · Sub investigator
    • Hitomi Hosoya, MD · Sub investigator
    • Lawrence Liu, MD · Sub investigator
    • Robert Vescio, MD · Sub investigator
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

2 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Dec 2026; primary completion for Dec 2030, 48 months later.

Of 227 non-industry phase 2 interventional studies under Myelodysplastic Syndromes, half reached primary completion within 76 months of starting (the median), counting those still running; a quarter within 44 and three quarters within 116. This study's planned 48 months is below that.

Counting every sponsor, half of 279 studies reached it within 66 months; a quarter within 40 and three quarters within 104.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 20, 2026
First posted
Oct 27, 2026
StartEst.
Dec 2026
Primary completionEst.
Dec 2030
CompletionEst.
Dec 2030
Last update
Oct 28, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Title
A Phase 2 Study of Allogeneic Stem Cell Transplant in Myelodysplastic Syndrome Following Conditioning With Fludarabine and Total Body Irradiation 800 cGy
Oct 28, 2026
Registered
First appeared on the registry
Oct 27, 2026
Show all 2 updates
  1. Oct 28, 2026
    Title A Phase 2 Study of Allogeneic Stem Cell Transplant in Myelodysplastic Syndrome Following Conditioning With Fludarabine and Total Body Irradiation 800 cGy
  2. Oct 27, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07896928
Lead sponsor
Ronald Paquette
Responsible party
Ronald Paquette (Sponsor-Investigator, Cedars-Sinai Medical Center) — Sponsor-investigator
First posted
Oct 27, 2026
Start date
Dec 2026 (estimated)
Primary completion
Dec 2030 (estimated)
Completion
Dec 2030 (estimated)
Last update
Oct 28, 2026

Study contacts

Clinical Trial Navigator
Contact
GroupCancerTrialInformation@cshs.org
310-423-5842
Ronald Paquette, MD
Contact
Ronald Paquette, MD
principal investigator · Cedars-Sinai Medical Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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