A Phase 1/2 interventional study of Cladribine and Cytarabine in Acute Biphenotypic Leukemia, Acute Myeloid Leukemia and Mixed Phenotype Acute Leukemia, sponsored by University of Washington. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-17.
Sponsored by University of Washington · Phase 1/2, Interventional, and Treatment
This phase I/II trial finds the best dose, side effects and how well giving venetoclax in combination with cladribine, cytarabine, granulocyte colony-stimulating factor, and mitoxantrone (CLAG-M) in treating patients with acute myeloid leukemia and high-grade myeloid neoplasms. Venetoclax may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. Chemotherapy drugs, such as cladribine, cytarabine, and mitoxantrone, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving venetoclax with CLAG-M may kill more cancer cells.
OUTLINE:
This is a dose-escalation study of venetoclax.
Patients will receive induction with granulocyte colony-stimulating factor subcutaneously (SC) on days 0-5 (if peripheral white blood cell count is less than 20,000/uL), cladribine intravenously (IV) on days 1-5, cytarabine IV on days 1-5, and mitoxantrone IV on days 1-3. Patients also receive venetoclax orally (PO) on days 1-14. Treatment repeats every 28-35 days for up to 2 induction cycles including mitoxantrone, and up to 4 consolidation cycles without mitoxantrone in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy and/or aspiration, and blood sample collection throughout the study.
After completion of study treatment, patients are followed up every 3 months for 12 months.
110 studies on the registry are indexed under Leukemia, Biphenotypic, Acute; 51 are open to participants now.
This study's planned enrollment of 62 is above the median of 50 across 98 interventional studies indexed under Leukemia, Biphenotypic, Acute.
Browse Leukemia, Biphenotypic, Acute studies →University of Washington is the lead sponsor of 1,397 studies on the registry; 225 are open to participants now.
Of its 154 completed or terminated interventional studies of FDA-regulated products, 132 (86%) have results posted.
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PHASE I:
Exclusion Criteria:
Treatment with any of the following within 7 days prior to the first dose of venetoclax
Administration or consumption of any of the following within 3 days prior to the first dose of venetoclax:
Patients will receive induction with granulocyte colony-stimulating factor on days 0-5 (if peripheral white blood cell count is less than 20,000/uL), cladribine on days 1-5, cytarabine on 1-5, and mitoxantrone on days 1-3. Patients also receive venetoclax orally (PO) on days 1-14. Treatment repeats every 28-35 days for up to 2 induction cycles including mitoxantrone, and up to 4 consolidation cycles without mitoxantrone in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy and/or aspiration, and blood sample collection throughout the study.
Drug: Cladribine · Drug: Cytarabine · Drug: Mitoxantrone · Biological: Recombinant Granulocyte Colony-Stimulating Factor · Drug: Venetoclax · Procedure: Bone Marrow Aspiration · Procedure: Bone Marrow Biopsy · Procedure: Biospecimen Collection
Given IV
Also known as: 2-CdA, 2CDA, CdA, Cladribina, Leustat, Leustatin, Leustatine, RWJ-26251
Given IV
Also known as: .beta.-Cytosine arabinoside, 1-.beta.-D-Arabinofuranosyl-4-amino-2(1H)pyrimidinone, 1-.beta.-D-Arabinofuranosylcytosine, 1-Beta-D-arabinofuranosyl-4-amino-2(1H)pyrimidinone, 1-Beta-D-arabinofuranosylcytosine, 1.beta.-D-Arabinofuranosylcytosine, 2(1H)-Pyrimidinone, 4-Amino-1-beta-D-arabinofuranosyl-, 2(1H)-Pyrimidinone, 4-amino-1.beta.-D-arabinofuranosyl-, Alexan, Ara-C, ARA-cell, Arabine, Arabinofuranosylcytosine, Arabinosylcytosine, Aracytidine, Aracytin, Aracytine, Beta-Cytosine Arabinoside, CHX-3311, Cytarabinum, Cytarbel, Cytosar, Cytosine Arabinoside, Cytosine-.beta.-arabinoside, Cytosine-beta-arabinoside, Erpalfa, Starasid, Tarabine PFS, U 19920, U-19920, Udicil, WR-28453
Given IV
Also known as: Dihydroxyanthracenedione, Mitozantrone
Given subcutaneously
Also known as: Recombinant Colony-Stimulating Factor 3, rhG-CSF
Given PO
Also known as: ABT-0199, ABT-199, ABT199, GDC-0199, RG7601, Venclexta, Venclyxto
Undergo bone marrow aspiration
Undergo bone marrow biopsy
Undergo blood sample collection
Also known as: Biological Sample Collection
Incidence of adverse events (Phase I)
Time frame: Up to 12 months
Maximum tolerated dose of venetoclax in combination with CLAG-M (Phase I)
Time frame: Up to 12 months
Event free survival (Phase II)
Time frame: At 6 months
Complete remission rate
Time frame: After 2 cycles (each cycle is approximately 35 days)
Rate of minimal residual disease negativity
Time frame: Up to 1 year
Rate of allogeneic hematopoietic cell transplant
Time frame: At 1 year
Overall survival
Time frame: At 1 year
Plan to share: No
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