Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 and up

Combining new drugs with chemotherapy for relapsed or refractory acute myeloid leukemia

Official title: A Two-Part Phase 1b Study Evaluating the Combination of Tazemetostat and CPX-351 (Part 1) and Palbociclib Pre-Treatment Followed by CPX-351 (Part 2) for the Treatment of Relapsed or Refractory Acute Myeloid Leukemia

Run by Thomas Jefferson University · NCT05627232 · Data updated 2026-11-12

This study is testing if adding new drugs, palbociclib or tazemetostat, to standard chemotherapy can help people with relapsed or refractory acute myeloid leukemia feel better and fight their cancer more effectively.

More Refractory Acute Myeloid Leukemia trials

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment24 (estimated)
SponsorThomas Jefferson University
Academic / other
Drugs / interventionschemotherapy, radiation, methotrexate
Locations1 site (Philadelphia, Pennsylvania)
StatusRecruiting
StartedAugust 28, 2023
Main results expectedJanuary 2028
Study endsJanuary 2029
Registry record updatedMarch 12, 2026
Trial IDNCT05627232 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with relapsed or refractory acute myeloid leukemia who have undergone at least one prior line of therapy.

Probably not a fit

Patients with acute myeloid leukemia that is not relapsed or refractory, or those with significant comorbidities affecting treatment tolerance, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase I trial evaluates the safety and effectiveness of palbociclib or tazemetostat in combination with CPX-351 for patients with relapsed or refractory acute myeloid leukemia (AML). The study aims to determine the maximum tolerated doses of these enzyme inhibitors alongside standard chemotherapy. Participants will receive either tazemetostat or palbociclib before the chemotherapy, with assessments including bone marrow biopsies and blood sample collections. The goal is to enhance cancer cell death through this combination treatment approach.

Why it matters

Potential benefit: If successful, this treatment could provide a new effective option for patients with difficult-to-treat acute myeloid leukemia.

How similar studies have gone: While this approach is novel in the context of AML, similar combinations of chemotherapy with targeted therapies have shown promise in other cancers.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Provide signed and dated informed consent form
* Willing to comply with all study procedures and be available for the duration of the study
* Male or female \>= 18 years of age
* Histologically confirmed acute myeloid leukemia (non-M3) relapsed from or refractory to at least 1 prior line of therapy. Bone marrow aspirate and biopsy within 28 days of screening is acceptable. If no prior bone marrow biopsy is available, bone marrow biopsy must be performed during screening unless:

  \* If the subject has \>= 20% myeloblasts present in the peripheral blood, a bone marrow biopsy is not necessary to meet this criterion
* Treatment with a prior investigational agent is acceptable so long as it has not been administered within 2 weeks of enrollment and any prior adverse effects have resolved to grade 1 or less with the exception of alopecia
* Eastern Cooperative Oncology Group (ECOG) performance status of 2 or less
* Life expectancy of at least 4 weeks
* Must be able to consume oral medication
* Subjects must have recovered from the toxic effect of any prior therapy to =\< grade 1 (except alopecia)
* Creatine clearance (CrCL) \>= 45
* Total bilirubin \< 2 x upper limit of normal (ULN)
* Female subjects of childbearing age must have a negative pregnancy test

Exclusion Criteria:

* Subjects with acute promyelocytic leukemia
* Subjects receiving any active chemotherapy agents (except hydroxyurea). Intrathecal methotrexate and cytarabine are permissible
* Subjects whose participation would result in a total cumulative dose of daunorubicin greater than 550 mg/m\^2 or greater than 450 mg/m\^2 if they previously received mediastinal radiation
* Subjects with evidence of active central nervous system (CNS) leukemia involvement. Lumbar puncture is not required for enrollment in the absence of neurologic symptoms
* Subjects must not be receiving growth factors (except erythropoietin)
* Subjects with currently active second malignancy with the exception of nonmelanoma skin cancer, carcinoma in situ of the cervix, resected prostate cancer with Gleason score =\< 6
* Subjects with unstable cardiac disease or uncontrolled arrhythmia
* Subjects with other severe concurrent disease which, in the judgement of the investigator, would make the patient inappropriate to receive high-intensity therapy
* Subjects who are pregnant or breastfeeding
* Subjects with known allergic reactions to components of the study product(s)
* Anything that would place the individual at increased risk or preclude the individual's full compliance with or completion of the study

Where it's running

  • Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.