NCT05211570 · AB Science
AB8939 in Patients With Relapsed/Refractory Acute Myeloid Leukemia
What this study is about
The primary objective is to define the safety and how well patients handle the treatment of AB8939 in patients with AML by determining the dose-limiting toxicities, the maximum tolerated dose, and the recommended dose for dose expansion study.
View original scientific description
The primary objective is to define the safety and tolerability of AB8939 in patients with AML by determining the dose-limiting toxicities, the maximum tolerated dose, and the recommended dose for dose expansion study.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients with documented diagnosis of acute myeloid leukemia (AML) based on the last version of the World Health Organization classification and eligible to second or third line of treatment.
- Patients with documented diagnosis of refractory melyodisplastic syndrome in second or third line of treatment, and with high risk at prognosis based on the IPSS-R scoring system.
- ECOG performance status ≤ 1
- Patients are able to understand, sign, and date the written informed consent form at screening visit prior to any protocol-specific procedures
- Patients are able and willing to comply with study procedures as per protocol, including bone marrow biopsies Key
Exclusion criteria
- Patients eligible to a standard of care
- Patients eligible to hematopoietic stem cell transplantation (HSCT) at the time of inclusion
- Patients diagnosed with acute promyelocytic leukemia (M3)
- Patients with clinically active CNS leukemia
- Patients with HSCT within 100 days prior to the first administration of AB8939
- Women who are lactating/breastfeeding or who plan to breastfeed while on study
- Women with a positive pregnancy test Other protocol-defined inclusion/exclusion criteria may apply EXPANSION COHORT STUDY Key Inclusion Criteria:
- Patients with documented diagnosis of acute myeloid leukemia (AML) based on the last version of the World Health Organization classification and eligible to second or third line of treatment.
- ECOG performance status ≤ 2
- Patients are able to understand, sign, and date the written informed consent form at screening visit prior to any protocol-specific procedures
- Patients are able and willing to comply with study procedures as per protocol, including bone marrow biopsies Key Exclusion Criteria:
- Patients eligible to a standard of care
- Patients eligible to hematopoietic stem cell transplantation (HSCT) at the time of inclusion
- Patients diagnosed with acute promyelocytic leukemia (M3)
- Patients with clinically active CNS leukemia
- Patients with HSCT within 100 days prior to the first administration of AB8939
- Women who are lactating/breastfeeding or who plan to breastfeed while on study
- Women with a positive pregnancy test Other protocol-defined inclusion/exclusion criteria may apply
Where
- Houston, Texas
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Oct 2, 2025 · Source of record for eligibility and locations