Evaluating a new CAR-T therapy for patients with relapsed or refractory acute myeloid leukemia

Phase I, Open Label Dose Escalation and Dose-Expansion Study to Evaluate the Safety, Expansion, Persistence, and Clinical Activity of UCART123 (Allogeneic Engineered T-cells Expressing Anti-CD123 Chimeric Antigen Receptor), Administered in Patients With Relapsed/Refractory Acute Myeloid Leukemia

Phase 1 Interventional Cellectis S.A. · NCT03190278

This study is testing a new CAR-T therapy to see if it can help people with relapsed or hard-to-treat acute myeloid leukemia feel better and improve their health.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment65 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorCellectis S.A. Industry-sponsored
Drugs / interventionsrituximab, Chimeric Antigen Receptor
Locations9 sites (San Francisco, California and 8 other locations)
Trial IDNCT03190278 on ClinicalTrials.gov

What this trial studies

This Phase 1 clinical trial is an open-label, dose-escalation and dose-expansion study that assesses the safety and efficacy of Universal Chimeric Antigen Receptor T-cells (UCART123v1.2) targeting CD123 in patients with relapsed or refractory acute myeloid leukemia (AML). The study aims to determine the Maximum Tolerated Dose (MTD) and the Recommended Phase 2 Dose (RP2D) while monitoring clinical activity and safety outcomes. Participants will receive the UCART123v1.2 treatment after meeting specific eligibility criteria, including having CD123+ blast cells and adequate organ function.

Who should consider this trial

Good fit: Ideal candidates include patients with relapsed or primary refractory AML who have CD123+ blast cells and meet specific health criteria.

Not a fit: Patients with acute promyelocytic leukemia, central nervous system leukemia, or those who have had multiple prior stem cell transplants may not benefit from this study.

Why it matters

Potential benefit: If successful, this therapy could provide a new treatment option for patients with relapsed or refractory acute myeloid leukemia, potentially improving survival rates.

How similar studies have performed: Other studies using CAR-T therapies have shown promising results, indicating potential success for this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Main Inclusion Criteria:

* Patients with relapsed or primary refractory AML (as defined in World Health Organization \[WHO\] criteria) with ≥5% bone marrow blasts
* Patients with CD123+ blast cells (verified by flow cytometry)
* Eastern Cooperative Oncology Group Performance Status (ECOG-PS) of ≤1
* Adequate organ function, including bone marrow, renal, hepatic, pulmonary, and cardiac function based on the last assessment performed within screening period
* (Dose-escalation) Identified donor and transplant strategy prior to lymphodepletion (LD)
* Other criteria may apply

Main Exclusion Criteria:

* Patients with acute promyelocytic leukemia (APL) or central nervous system (CNS) Leukemia
* Previous investigation gene or cell therapy (including CAR)
* \> 1 prior allogeneic stem cell transplantations (SCTs)
* Prior treatment with rituximab or other anti-cluster of differentiation 20 (anti-CD20) therapy within 3 months
* Any known active or uncontrolled infection
* Other criteria may apply

Where this trial is running

San Francisco, California and 8 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Relapsed/Refractory Acute Myeloid LeukemiaAcute Myeloid LeukemiaChimeric Antigen Receptor T-Cell therapyAllogeneicTranscription Activator-Like Effector Nuclease
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.