Venetoclax in Combination With ASTX727 for the Treatment of Chronic Myelomonocytic Leukemia and Other Myelodysplastic Syndrome/Myeloproliferative Neoplasm

Running, not enrolling · Phase 2

Conditions studied: Chronic Myelomonocytic Leukemia, Myelodysplastic Syndrome, Myelodysplastic Syndrome With Excess Blasts, Myelodysplastic/Myeloproliferative Neoplasm, Myeloproliferative Neoplasm

In brief

This phase II trial tests whether decitabine and cedazuridine (ASTX727) in combination with venetoclax work better than ASTX727 alone at decreasing symptoms of bone marrow cancer in patients with chronic myelomonocytic leukemia (CMML), myelodysplastic syndrome/myeloproliferative neoplasm (MDS/MPN) with excess blasts. Blasts are immature blood cells. Decitabine is in a class of medications called hypomethylation agents. It works by helping the bone marrow produce normal blood cells and by killing abnormal cells in the bone marrow. Cedazuridine is in a class of medications called cytidine deaminase inhibitors. It prevents the breakdown of decitabine, making it more available in the body so that decitabine will have a greater effect. Venetoclax is in a class of medications called B-cell lymphoma-2 (BCL-2) inhibitors. It may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. The combination of ASTX727 and venetoclax may be more effective in reducing the cancer signs and symptoms in patients with CMML, or MDS/MPN with excess blasts.

Key facts

Study ID: NCT05600894
Run by: National Cancer Institute (NCI)
People needed: 132
Starts: 2023-06-27
Expected to finish: 2026-08-31
Last updated by the study team: 2026-07-31

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

A diagnosis of an MDS/MPN "overlap" syndrome with >= 5% marrow blasts (including monocytic blast equivalent in case of CMML). Hydroxyurea may be used to control counts up until the start of therapy
White blood cell (WBC) < 25,000/mm\^3. Treatment with hydroxyurea is permitted to lower the WBC to reach this criterion
Age >= 18 years. Because no dosing or adverse event data are currently available on the use of ASTX727 in combination with venetoclax in patients < 18 years of age, children are excluded from this study
Eastern Cooperative Oncology Group (ECOG) performance status =< 2
Total bilirubin =< 1.5 x upper limit of normal (ULN) (unless considered due to Gilbert's syndrome)
Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 3.0 x institutional ULN OR =< 5.0 x institutional ULN for patients with liver metastases
Glomerular filtration rate (GFR) >= 30 mL/min/1.73 m\^2
Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial
For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated
Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load
Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial. Hormonal therapy for prior or concurrent malignancy is allowed
Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better
Ability to understand and the willingness to sign a written informed consent document. Participants with impaired decision-making capacity (IDMC) who have a legally authorized representative (LAR) and/or family member available will also be eligible
Ability to swallow pills

You may not qualify if…

Patients with need for emergent disease-directed therapy excluding hydroxyurea
More than one cycle of previous MDS/MPN-directed therapy, or MDS-directed therapy including lenalidomide and hypomethylating agent (HMAs) such as decitabine or azacitidine, excluding hydroxyurea. Prior use of erythropoietin stimulating agents (ESA) and thrombopoietic agents is allowed, but must be discontinued 4 weeks prior to study treatment
Patients currently or previously receiving an investigational agent or device within 4 weeks of the first dose of treatment
Patients with symptomatic uncontrolled central nervous system (CNS) disease. Imaging to confirm the absence of brain metastases is not required. Patients with spinal cord compression unless considered to have received definitive treatment for this and evidence of clinically stable disease for 28 days
Patients who have consumed grapefruit, grapefruit products, Seville oranges (including marmalade containing Seville oranges) or starfruit within 3 days prior to the initiation of study treatment and are unwilling to discontinue consumption of these throughout the receipt of study drug
History of allergic reactions attributed to compounds of similar chemical or biologic composition to ASTX727 or venetoclax
Patients with uncontrolled intercurrent illness (e.g. requiring intravenous therapy) at the discretion of the investigator
Pregnant women are excluded from this study because venetoclax and ASTX727 have the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with venetoclax, breastfeeding should be discontinued if the mother is treated with venetoclax. These potential risks may also apply to other agents used in this study. Patients must be post-menopausal or with evidence of non-childbearing status for women of childbearing potential: negative urine or serum pregnancy test within 28 days of study treatment and confirmed prior to treatment on day 1
Post-menopausal is defined as:
Amenorrheic for 1 year or more following cessation of exogenous hormonal treatments
Luteinizing hormone (LH) and follicle stimulating hormone (FSH) levels in the post-menopausal range for women under 50 years of age
Radiation-induced oophorectomy with last menses > 1 year ago
Chemotherapy-induced menopause with > 1 year interval since last menses
Surgical sterilization (bilateral oophorectomy or hysterectomy)
Women of child-bearing potential must agree to use adequate contraception (hormonal birth control or abstinence) prior to study entry and for the duration of study participation, and for 6 months following completion of study treatment. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception (latex or synthetic condom or abstinence) prior to the study, for the duration of study participation, and 3 months after completion of venetoclax and ASTX727 administration
Patients with any other medical condition for which the expected survival is below 12 months
Patients with a prior or concurrent malignancy whose natural history or treatment has the potential to interfere with the safety or assessment of the investigational regimen
Patients with uncontrolled infection at the time of study entry

Where it is running

Mayo Clinic Hospital in Arizona — Phoenix, Arizona, United States
UC Irvine Health Cancer Center-Newport — Costa Mesa, California, United States
UCI Health - Chao Family Comprehensive Cancer Center and Ambulatory Care — Irvine, California, United States
UCI Health Laguna Hills — Laguna Hills, California, United States
Los Angeles General Medical Center — Los Angeles, California, United States
USC / Norris Comprehensive Cancer Center — Los Angeles, California, United States
UC Irvine Health/Chao Family Comprehensive Cancer Center — Orange, California, United States
University of California Davis Comprehensive Cancer Center — Sacramento, California, United States
Yale University — New Haven, Connecticut, United States
Mayo Clinic in Florida — Jacksonville, Florida, United States
Northwestern University — Chicago, Illinois, United States
University of Chicago Comprehensive Cancer Center — Chicago, Illinois, United States
UC Comprehensive Cancer Center at Silver Cross — New Lenox, Illinois, United States
University of Chicago Medicine-Orland Park — Orland Park, Illinois, United States
University of Kansas Cancer Center — Kansas City, Kansas, United States
University of Kansas Hospital-Westwood Cancer Center — Westwood, Kansas, United States
University of Maryland/Greenebaum Cancer Center — Baltimore, Maryland, United States
Johns Hopkins University/Sidney Kimmel Cancer Center — Baltimore, Maryland, United States
Beth Israel Deaconess Medical Center — Boston, Massachusetts, United States
NYP/Weill Cornell Medical Center — New York, New York, United States
Montefiore Medical Center-Einstein Campus — The Bronx, New York, United States
Montefiore Medical Center-Weiler Hospital — The Bronx, New York, United States
Montefiore Medical Center - Moses Campus — The Bronx, New York, United States
UNC Lineberger Comprehensive Cancer Center — Chapel Hill, North Carolina, United States
Wake Forest University Health Sciences — Winston-Salem, North Carolina, United States

Full record on ClinicalTrials.gov

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