Status and phase
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Treatments
About
This is a single-arm, single-dose dose-escalation and dose-expansion study.
Full description
Patients with relapsed/refractory acute myeloid leukemia (r/r AML) were enrolled in the trial, which was divided into two parts: dose-escalation phase and dose-expansion phase.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
Voluntarily sign the informed consent and be expected to complete the follow-up examination and treatment of the study procedures.
Age of 18-70 years old (inclusive of the cut-off value), regardless of gender.
Conforming to the diagnosis of AML according to the 2016 WHO classification, and conforming to the diagnostic criteria of relapsed and refractory acute myeloid leukemia in Chinese Guidelines for the Diagnosis and Treatment of relapsed and refractory acute myeloid Leukemia (2017 edition) :
Flow cytometry confirmed the AML Blast CLL-1 expression positive (CLL-1 expression ≥50%).
The patient has recovered from the toxicity of previous treatment, defined as CTCAE toxicity grade <2 (unless the abnormality is tumor-related or is judged by the investigator to be stable and has little effect on safety or efficacy).
ECOG performance status of 0-1 and predicted survival of more than 3 months.
Have appropriate organ functions:
Female subjects were also considered for inclusion if they met the following criteria:
Infertility, defined as:
be fertile, but have a negative serum pregnancy test at screening, and agree to use a medically approved contraceptive method (e.g., an intrauterine device, contraceptive pill, or condom) before and during study enrollment and up to 1 year after the last study use.
Men of childbearing potential had to agree to barrier contraception or complete abstinence until 1 year after the last study dose.
Exclusion criteria
Acute promyelocytic leukemia was diagnosed.
Have other malignant tumors within 3 years before screening, excluding adequately treated cervical carcinoma in situ, papillary thyroid carcinoma, basal cell or squamous cell skin cancer, local prostate cancer after radical prostatectomy, and ductal carcinoma in situ after radical prostatectomy.
Evidence of central nervous system involvement or cranial neuropathy.
Hepatitis B surface antigen (HBsAg) positive, hepatitis B core antibody (HBcAb) positive and peripheral blood HBV-DNA higher than the detection limit; Hepatitis C virus (HCV) antibody positive; Persons with human immunodeficiency virus (HIV) antibody positive; Cytomegalovirus (CMV) DNA positive cases; EBV-DNA positive patients; The syphilis antibody was positive.
Those with a history of anaphylaxis [A history of anaphylaxis was defined as an allergic reaction of grade 2 or higher, in which any of the following clinical manifestations occurred: Airway obstruction (rhinorrhea, cough, stridor, dyspnea), Tachycardia, Hypotension, Arrhythmia, Gastrointestinal symptoms (nausea, vomiting), Incontinence, Laryngeal edema, Bronchospasm, Cyanosis, Shock, Respiratory, cardiac arrest] or known to be allergic to any of the drug active ingredients, excipents, or mouse-derived products or xenoproteins included in this trial (including the lymphatic cells clearance protocol).
Have severe cardiac disease, including but not limited to severe arrhythmia, unstable angina, massive myocardial infarction, New York Heart Association class III or IV cardiac dysfunction, and refractory hypertension.
Previous organ transplantation or preparation for organ transplantation (excluding hematopoietic stem cell transplantation).
Acute and chronic graft-versus-host disease (GVHD).
Patients who had undergone hematopoietic stem-cell transplantation within 6 months before screening.
Active autoimmune or inflammatory diseases (e.g., Guillain-Barre syndrome (GBS), amyotrophic lateral sclerosis (ALS)) and clinically significant active cerebrovascular diseases (e.g., cerebral edema, posterior reversible encephalopathy syndrome (PRES)).
Patients with cancer emergencies (such as spinal cord compression, intestinal obstruction, leukostasis, tumor lysis syndrome, etc.) requiring emergency treatment before screening or reinfusion.
Presence of uncontrolled bacterial, fungal, viral, or other infection requiring antibiotic treatment.
Patients who had undergone major surgery (excluding diagnostic surgery and biopsy) within 4 weeks before lymphatic cells clearance or planned to undergo major surgery during the study period, or who had not fully healed the surgical wound before enrollment.
Persons with severe mental illness.
Within 1 week before the collection of peripheral blood mononuclear cells (PBMC), patients who use granulocyte colony-stimulating factor (G-CSF), granulocyte macrophage colony-stimulating factor (GM-CSF) and other hematopoietic cytokine drugs that have an impact on the patient's blood picture (if it is a long-acting preparation, it is 2 weeks) and have an impact on cell preparation as judged by the investigator .
Within 2 weeks before PBMC collection, patients were receiving hormonal or immunosuppressive drugs that were judged by the investigator to have an effect on cell production.
Vaccination with live (attenuated) virus vaccine within 4 weeks prior to screening.
Alcoholics or those with a history of substance abuse.
Participate in other clinical investigators within 3 months.
Subjects who have received other CAR-T therapy or cell therapy in the past.
Patients who, in the investigator's judgment and/or clinical criteria, have contraindications to any study procedure or other medical conditions that may put them at unacceptable risk.
Primary purpose
Allocation
Interventional model
Masking
24 participants in 1 patient group
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Central trial contact
Min Luo, Doctorate
Data sourced from clinicaltrials.gov
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