Allogeneic Engineered Hematopoietic Stem Cell Transplant (HCT) Lacking the CD33 Protein, and Post-HCT Treatment With Mylotarg, for Patients With CD33+ AML or MDS
← catalyst calendarSponsored by Vor Biopharma (industry) · VOR — their whole pipeline →.
Phase
Phase 1/2
Status
Terminated
Study type
Interventional
Design
Randomized · None · Treatment
Enrollment
67actual
Sites
15
Countries
Canada, United States
Every value on this page is a field the sponsor filed with ClinicalTrials.gov, reproduced. Dates are their own estimates, revised as a study runs, unless the registry marks them actual. sources →
Source: ClinicalTrials.gov, retrieved 2026-08-19
Why the sponsor stopped it
Lack of Funding
As filed on the registry record, in the sponsor's own words.
Dates
each axis at the precision it was filed, with the registry's own basis| Date | Filed | Basis | What it is |
|---|---|---|---|
| Start | 2021-12-16 | actual | When the study began enrolling |
| Primary completion | 2025-05-28 | actual | The date the last participant is measured for the primary outcome — the readout window |
| Study completion | 2025-05-28 | actual | The whole study's end, after follow-up |
| First posted | 2021-04-19 | actual | When this record first appeared on the registry |
| Results posted | — | When the sponsor posted results to the registry | |
| Record updated | 2025-07-29 | actual | The sponsor's own last edit to this record — every projection above is as current as this date |
What it studies
Conditions
- Leukemia, Myeloid, Acute
- Myelodysplastic Syndromes
Interventions
- Biological: VOR33
- Drug: Mylotarg — also filed as gemtuzumab ozogamicin
Primary outcome
what the primary-completion date above is the date OFIncidence of neutrophil engraftment
measured Day 28
Publications
- PMID 42120728 — linked by the registry
- PMID 38027064 — linked by the registry
Linked on the registry record. A “linked by the registry” entry is NLM's own automated PubMed match, not a claim by the sponsor that the paper reports this study.
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