Clinical Trials/NCT05008575

NCT05008575

Unknown

Phase 1

Phase I Study to Evaluate the Safety and Effectiveness of Anti-CD33 CAR NK Cell Therapy in Relapsed/Refractory Acute Myeloid Leukemia

Xinqiao Hospital of Chongqing1 site in 1 country27 target enrollmentDecember 23, 2021

ConditionsLeukemia, Myeloid, Acute

Interventionsanti-CD33 CAR NK cells Fludarabine Cytoxan

DrugsFludarabine Cytoxan

Overview

Phase: Phase 1
Intervention: anti-CD33 CAR NK cells
Conditions: Leukemia, Myeloid, Acute
Sponsor: Xinqiao Hospital of Chongqing
Enrollment: 27
Locations: 1
Primary Endpoint: incidence of participants with dose limiting toxicity (DLT)
Last Updated: 4 years ago

Overview Investigators Eligibility Criteria Arms & Interventions Outcomes Sites Similar Trials

Overview

Brief Summary

CAR technology has been used in T cell therapy and gets great success in treating hematological diseases. Following models of CAR T cells, CAR NK cell therapy has been one hot point. For myeloid malignancies, CD33 is widely expressed. Targeting CD33 surface antigens by CAR NK cells provides an off-the-shelf immune cell therapy.

Registry

clinicaltrials.gov

Start Date

December 23, 2021

End Date

December 1, 2023

Last Updated

4 years ago

Study Type

Interventional

Study Design

Single Group

Sex

All

Investigators

Sponsor

Xinqiao Hospital of Chongqing

Responsible Party

Principal Investigator

Xi Zhang, MD

chef of hemotology department

Xinqiao Hospital of Chongqing

Eligibility Criteria

Inclusion Criteria

•ECOG performance status score ≤
•Life expectancy ≥ 12 weeks from the time of enrollment.
•Disease status at the time of enrollment: -Patients with AML (except M3) who have not achieved complete remission after standard chemotherapy regimens; -Not suitable or unconditional for allogeneic hematopoietic stem cell transplantation; -Patients with recurrent acute myeloid leukemia after autologous hematopoietic stem cell transplantation without active graft-versus-host disease (GVHD).
•CD33 expression must be detected on greater than 50% of the malignant cells by immunohistochemistry or greater than 80% by flow cytometry.
•Adequate main organ function as assessed by the following laboratory requirements: creatinine ≤ 2.5 × upper limit of normal, cardiac ejection fraction ≥ 40%, oxygen saturation ≥ 90%, total bilirubin ≤ 3 × upper limit of normal, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3 × upper limit of normal, Hgb≥80g/L.
•Without history of accepting anti-cancer therapy, including chemotherapy, radiotherapy, immunotherapy (immune suppressive drugs or corticosteroid treatment) within 4 weeks of screening.
•Women of child-bearing age must have evidence of negative pregnancy test.
•Subjects of reproductive potential must agree to use acceptable birth control methods within 1 year after treatment, as described in protocol.
•After discussion by the expert group, the patient's condition was analyzed and combined with the general physical condition of the patient, the benefit of participating in the clinical trial was greater than the risk.
•All participants must have the ability to understand and willingness to sign a written informed consent.

Exclusion Criteria

•Diagnosis of acute promyelocytic leukemia (APL M3): t(15;17)(q22;q12); (promyelocytic leukemia \[PML\]/retinoic acid receptor \[RAR\] alpha \[a\]) and variants excluded.
•Active acute or chronic GVHD or requirement of immunosuppressant medications for GVHD within 4 weeks of enrollment.
•Have been diagnosed with or treated other malignant tumors other than AML within 5 years before screening, except for the following conditions: participants with adequately treated cervical carcinoma in situ, basal cell or squamous cell skin cancer; or received radical treatment Local prostate cancer, ductal carcinoma in situ.
•There are serious systemic diseases: New York Heart Association (NYHA) stage III or IV congestive heart failure; cerebrovascular accident or myocardial infarction or hemodynamic instability caused by arrhythmia within 6 months before signing the informed consent; impaired cardiac function (LVEF\<50%) assessed by echocardiographic scan.
•Sever illness or medical condition, which would not permit the patient to be managed according to the protocol, including active uncontrolled infection.
•Pregnant or lactating women.
•Subjects with radiologically-detected CNS chloromas or CNS 3 disease (presence of ≥ 5/μL white blood cells (WBCs) in cerebral spinal fluid (CSF) and cytospin positive for blasts \[in the absence of a traumatic lumbar puncture\] and/or clinical signs of CNS leukemia such as a cranial nerve palsy from active disease). Subjects with adequately treated CNS leukemia are eligible.
•Human immunodeficiency virus (HIV) seropositivity; hepatitis B surface antigen is positive or HBV DNA is higher than the detection limit of the analysis method; hepatitis C antibody is positive or HCV RNA is higher than the detection limit of the analysis method; syphilis antibody and syphilis rapid plasma reagin are positive; CMV DNA is positive.
•Patients who suffer from allergies for any cytokines or antibodies.
•Contraindications for fludarabine or cyclophosphamide treatment.

Arms & Interventions

antiCD33 CAR NK cells

After preconditioning with chemotherapy, the antiCD33 CAR NK cells will be evaluated

Intervention: anti-CD33 CAR NK cells

antiCD33 CAR NK cells

After preconditioning with chemotherapy, the antiCD33 CAR NK cells will be evaluated

Intervention: Fludarabine

antiCD33 CAR NK cells

After preconditioning with chemotherapy, the antiCD33 CAR NK cells will be evaluated

Intervention: Cytoxan

Outcomes

Primary Outcomes

incidence of participants with dose limiting toxicity (DLT)

Time Frame: within 4 weeks after infusion

To characterize the safety, tolerability of Anti-CD33 CAR NK cells

Overall Remission Rate (ORR)

Time Frame: 4 weeks after infusion

Assessment of morphologic complete remission (CR), complete remission with incomplete recovery of counts (CRi), no residual disease as analyzed by flow cytometry analysis, and molecular remission by molecular studies