Radioactive antibody boosts transplant prep for tough leukemias

NCT ID NCT06287944

First seen Jun 27, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This early-phase trial tests whether adding a radioactive antibody (225Ac-DOTA-daratumumab) to standard chemotherapy and targeted radiation can safely improve the conditioning regimen before a donor stem cell transplant. The study includes 15 adults with high-risk acute myeloid leukemia, acute lymphoblastic leukemia, or myelodysplastic syndrome. The goal is to find the best dose and see if the combination helps kill cancer cells more effectively while limiting side effects.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Radioactive antibody (225Ac-DOTA-daratumumab) plus chemotherapy (fludarabine, melphalan) and targeted radiation
What this could lead to
If successful, this could lead to a more effective and safer conditioning regimen for stem cell transplant in high-risk blood cancers, potentially improving survival.
What could go wrong
This is a very early, small phase 1 trial with only 15 participants, so results may not apply broadly. The radioactive antibody may cause serious side effects, and the treatment may not work better than standard approaches.

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Conditions

The condition(s) this trial relates to.

acute lymphoblastic leukemia acute myeloid leukemia myelodysplastic syndrome Myelodysplastic Syndromes Precursor Cell Lymphoblastic Leukemia-Lymphoma

As listed by the trial registrant

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

Contacts and locations

Locations

  • City of Hope Medical Center

    RECRUITING

    Duarte, California, 91010, United States

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