Preclinical Development of Tuspetinib for the Treatment of Acute Myeloid Leukemia.
Himangshu Sonowal, William G Rice, Raphael Bejar...
https://pubmed.ncbi.nlm.nih.gov/39665627/Actively Recruiting
Led by Aptose Biosciences Inc. · Updated on 2025-08-26
240
Participants Needed
34
Research Sites
21 weeks
Total Duration
Researchers are studying the safety, tolerability, and pharmacokinetics of tuspetinib HM43239 in adults with acute myeloid leukemia AML, myelodysplastic syndromes with increased blasts grade 2 MDS-IB2, or chronic myelomonocytic leukemia CMML that has relapsed or is refractory after at least one prior treatment, as well as in newly diagnosed AML patients who cannot receive intensive chemotherapy. This phase 12 open-label study aims to find a safe and potentially effective dose of tuspetinib for future research. Tuspetinib will be given either alone or combined with other drugs such as venetoclax or venetoclax plus azacitidine, depending on the study part. The study includes several parts Part A dose escalation with up to 6 dose levels of tuspetinib alone, Part B dose exploration at up to 4 dose levels, Part C dose expansion testing tuspetinib alone or with venetoclax at specified doses, and Part D dose exploration combining tuspetinib with venetoclax and azacitidine for newly diagnosed AML patients ineligible for intensive chemotherapy. Participants will be closely monitored through blood tests, physical exams, and assessments of drug levels in the blood during at least one 28-day treatment cycle and up to four years for long-term safety and response. Researchers will measure adverse events, determine the maximum tolerated dose, and evaluate treatment responses such as remission rates and survival outcomes. The study involves multiple centers and aims to provide detailed information on how tuspetinib works and is tolerated alone and in combination treatments.
CONDITIONS
Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Tuspetinib (HM43239) in Patients With Relapsed or Refractory Acute Myeloid Leukemia
R
Rafael Bejar, MD, PhD
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Aptose Biosciences Inc.
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Tuspetinib regimen | VEN + AZA (current care) |
|---|---|---|
| What it is | An investigational oral kinase inhibitor (tuspetinib) given alone or with venetoclax and azacitidine in a Phase 1/2 dose escalation and expansion study | An established combination of venetoclax plus azacitidine used in AML patients who are not eligible for intensive chemotherapy |
| Role in study | Investigational therapy being tested in sequential parts (monotherapy, doublet, triplet) to determine safety, dosing, and preliminary efficacy | Not studied in this trial but serves as the standard regimen outside the study for components similar to triplet arms |
| Use in treatment | Used experimentally to treat relapsed or refractory AML and AML ineligible for intensive chemotherapy, with aim to find recommended Phase 2 dose and assess tolerability | Widely used as a primary therapy in newly diagnosed or relapsed AML patients ineligible for intensive induction therapy |
| How it is given | Tuspetinib given orally once daily; in dose escalation and expansion phases with or without venetoclax (oral) and azacitidine (intravenous) depending on study part | Venetoclax taken orally plus azacitidine administered by intravenous infusion according to established clinical protocols |
| Evidence status | Early-phase trial data limited to safety, pharmacokinetics, dose escalation and preliminary response rates | Strong evidence supports VEN + AZA efficacy in similar AML populations, including response and survival improvement |
| Important limitations | Safety and efficacy have only been assessed in early-phase trials; optimal dosing and clinical benefit remain unestablished | While representing current care, outcomes vary and resistance is common, especially in patients with adverse mutations or after relapse |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Repeated 28-day cycles until disease progression or discontinuation
Participants receive tuspetinib as a single agent or in combination with venetoclax and azacitidine to assess safety, tolerability, and pharmacokinetics.
Weekly visits for up to 4 years
Duration - Up to 4 years
Participants are monitored for long-term safety and treatment outcomes after completing or discontinuing treatment.
Periodic visits depending on participant status
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
SEQUENTIAL
Primary Purpose
TREATMENT
Number of Arms
5
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Himangshu Sonowal, William G Rice, Raphael Bejar...
https://pubmed.ncbi.nlm.nih.gov/39665627/Aptose Biosciences Inc.
Lead Sponsor