Chinese PLA General Hospital
Beijing, China, 100853
Location status: Recruiting
Location contact
Chunji Gao, M.D. & Ph.D.
PRINCIPAL_INVESTIGATOR
Yanqing Ma, M.D & Ph.D
CONTACT
Yu Jing, M.D. & Ph.D.
SUB_INVESTIGATOR
NCT Number: NCT06835140
The goal of this clinical trial is to evaluate the effectiveness of CD123-CD16 bispecific antibody-modified NK cells in treating patients with CD123-positive relapsed or refractory Acute Myeloid Leukemia (RR AML). It will also assess the safety of this modified NK cell therapy.
The main questions: Does the infusion of CD123-CD16 bispecific antibody-modified NK cells induce remission in RR AML patients? What are the safety and potential adverse effects associated with the administration of these modified NK cells? Researchers will administer CD123-CD16 bispecific antibody-modified NK cells to RR AML patients and compare the outcomes to existing treatment options to determine efficacy and safety.
Participants will:
Undergo lymphocyte-depleting chemotherapy Fludarabine&Cyclophosphamide from day -5 to day -3 before NK cell infusion.
Receive intravenous infusions of modified NK cells at escalating doses:
The first three patients will receive 1×10⁷ cells/kg. The next three patients will receive 2×10⁷ cells/kg. The final three patients will receive 4×10⁷ cells/kg. Have NK cell infusions administered every 96-120 hours for a total of three infusions, with each infusion completed within 10 to 15 minutes.
Undergo dose escalation with subsequent groups only after confirming the safety of the previous dose group.
Have their vital signs (temperature, heart rate, respiratory rate, blood pressure, etc.) monitored before and after each infusion.
Keep baseline data records during NK cell infusions. Participate in follow-up assessments to monitor disease remission and detect any adverse events.
This trial aims to provide new treatment options for RR AML patients by leveraging the targeted cytotoxic effects of CD123-CD16 bispecific antibody-modified NK cells to achieve disease remission.
Interested in participating?
Request Info18 year–70 year
All sexes
Interventional
Phase 1
Beijing, China, 100853
Location status: Recruiting
Chunji Gao, M.D. & Ph.D.
PRINCIPAL_INVESTIGATOR
Yanqing Ma, M.D & Ph.D
CONTACT
Yu Jing, M.D. & Ph.D.
SUB_INVESTIGATOR
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Diagnosed with Acute Myeloid Leukemia (AML) in the hospital. Has undergone multiple first-line clinical treatments and has developed resistance to current treatments. Relapse after original induction therapy failure with a predicted survival of more than three months.
Flow cytometry detection shows CD123-positive AML cells.CD123 expression level is not less than 20%.
ECOG Performance Status score of 0-2 or Karnofsky Performance Status (KPS) score greater than 80.
Exclusion criteria
Diagnosed with Acute Promyelocytic Leukemia(APL).
Flow cytometry shows CD123 negative or CD123 expression level less than 20%.
Persistent non-hematologic toxicity of grade 2 or higher related to previous treatments.
Patients requiring immunosuppressants for grade II-IV acute Graft-Versus-Host Disease (GVHD).
Systemic steroid treatment within 7 days prior to first study drug treatment (excluding topical and inhaled corticosteroids or short-term prophylactic steroid treatment).
Certain cardiovascular and cerebrovascular diseases within 6 months prior to first dose.
New York Heart Association (NYHA) classification ≥3 or uncontrolled malignant arrhythmias.Other cardiovascular and cerebrovascular diseases deemed unsuitable by the investigator.
Pregnant or breastfeeding women (the safety of this treatment for unborn babies is unknown).
For female participants, pregnancy must be confirmed negative by serum or urine pregnancy test within 48 hours before infusion.
Active Hepatitis B,Hepatitis C virus infection, Peripheral blood CMV-DNA ≥500 copies/mL, HIV/AIDS infection and any uncontrolled active infection.
Allergic to immunotherapy and related drugs.
Neurological diseases such as neurodegenerative diseases, primary central nervous system tumors/infections, multiple sclerosis, epilepsy, severe peripheral neuropathy, etc.
Patients enrolled sequentially received varying doses of NK cell infusions. The first three patients received 1×10⁷ cells/kg, the next three received 2×10⁷ cells/kg, and the final three received 4×10⁷ cells/kg.
Time frame: Bone marrow aspiration assessments are conducted one week after each patient's treatment completion, followed by evaluations at 1 month, 3 months, and 6 months.
Overall Response Rate
Time frame: Bone marrow aspiration assessments are conducted one week after each patient's treatment completion, followed by evaluations at 1 month, 3 months, and 6 months.
Complete Remission Rate
Time frame: 14 days-28 days after infusion
Adverse events related to cell reinfusion (≥ Grade 3 treatment-related organ toxicity, laboratory tests, and Grade 4 hematologic toxicity, etc.) and number of participants with treatment-related AEs assessed by CTCAE v5.0
Time frame: 14 days-28 days after infusion
PD parameters: content of CD123+AML cells in peripheral blood ; plasma cytokine levels at various time points;
Time frame: 14 days-28 days after infusion
the condition without significant progression nor significant reduction in AML cells after treatment. The disease is stable, with no significant change in the number of leukemia cells in peripheral blood or bone marrow assessed by IRC.
Time frame: through study completion, an average of 6-12moths
the time from cell last infusion to the first assessment of tumor progression, relapse, or death for any reason
Time frame: through study completion, an average of 6-12moths
the time from cell last infusion to death for any reason
Contact information is provided by the study sponsor or research team.
Chunji Gao, M.D.
CONTACT
Yanqing Ma, M.D.
CONTACT
Chunji Gao
Other
CD123-Targeted CD16 Antibody-Modified NK Cell Immunotherapy for Refractory/Relapsed Acute Myeloid Leukemia (R/R AML)
Acronym: CD123-CD16-NK
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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