Evaluate the Safety and Efficacy of CLL1 CAR-T in Patients With R/R AML

Sponsor
Zhejiang University (Other)
Overall Status
Not yet recruiting
CT.gov ID
NCT05467202
Collaborator
(none)
20
1
1
36
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Study Details

Study Description

Brief Summary

This is an open label, phase I study to assess the safety and efficacy of CLL1 CAR-T in patients with relapsed and refractory acute myeloid leukemia

Condition or Disease Intervention/Treatment Phase
  • Drug: CLL1 CAR-T
Phase 1

Study Design

Study Type:
Interventional
Anticipated Enrollment :
20 participants
Allocation:
N/A
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
To Evaluate the Safety and Efficacy of CLL1 CAR-T in Patients With Relapsed and Refractory Acute Myeloid Leukemia
Anticipated Study Start Date :
Aug 1, 2022
Anticipated Primary Completion Date :
Aug 2, 2024
Anticipated Study Completion Date :
Aug 2, 2025

Arms and Interventions

Arm Intervention/Treatment
Experimental: Treatment group

Dose Escalation:After enrollment ,Participants complete the PBMC apheresis,then complete the Lymphocyte clearance,and then receive the dose climning test: 3×10e6/kg,6 ×10e6/kg,9×10e6/kg. Dose Expansion:Participants receive a single dose (at the MTD determined).

Drug: CLL1 CAR-T
A single infusion of autologous CLL1 CAR-T cells administered intravenously

Outcome Measures

Primary Outcome Measures

  1. Evaluation of Safety [Up to 2 years after CLL1 CAR-T infusion]

    Count the Incidence of adverse events

  2. Changes in cytokine level after CLL1 CAR-T infusion [Up to 2 years after CLL1 CAR-T infusion]

    Calculate the change of cytokine level in peripheral blood by flow cytometry after CLL1 CAR-T infusion. Cytokines include IL-2、IL-6、IL-10、IFN-γ.

Secondary Outcome Measures

  1. Complete response rate(CRR) [Up to 2 years after CLL1 CAR-T infusion]

    Proportion of subjects who achieved morphological complete response (CR) and complete response with hematologic incomplete recovery (CRi)

  2. Partial response Rate (PRR) [Up to 2 years after CLL1 CAR-T infusion]

    Proportion of subjects who achieved a partial response (PR)

  3. Overall response Rate(ORR) [Up to 2 years after CLL1 CAR-T infusion]

    Proportion of subjects who achieved CR, CRi, or PR

Other Outcome Measures

  1. Overall survival [Up to 2 years after CLL1 CAR-T infusion]

    Death from any cause from the beginning of cell transfusion

  2. Recurrence free survival (RFS) [Up to 2 years after CLL1 CAR-T infusion]

    From remission to relapse or death of the subject (including all causes), whether the subject relapsed or died is unknown until the date of the last follow-up examination.

  3. Event-free survival (EFS) [Up to 2 years after CLL1 CAR-T infusion]

    Counting from the beginning of cell transfusion until treatment failure, recurrence, or death (various causes). Subjects without any of these events were counted up to the last follow-up examination date. For patients without CR or CRi, EFS is calculated from the beginning of cell transfusion until disease progression or death. Based on the initial event.

  4. MRD negative rate [Up to 2 years after CLL1 CAR-T infusion]

    The rate of MRD negative subjects was determined by flow cytometry.

  5. Median BM Reduction [Up to 2 years after CLL1 CAR-T infusion]

    Changes of bone marrow primitive cells after cell transfusion from baseline.

  6. Percentage of subjects disengaged from transfusion [Up to 2 years after CLL1 CAR-T infusion]

    Percentage of baseline transfusion-dependent subjects who were discharged from transfusion after cell transfusion.

Eligibility Criteria

Criteria

Ages Eligible for Study:
2 Years to 70 Years
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  1. All subjects must sign and date the Informed Consent before initiating any study specific procedures or activities;

  2. Diagnosed as relapse/refractory (r/r) de novo or secondary acute myeloid leukemia (AML);

  3. The expression of CLL1 in AML blast is positive ;

  4. The patient has recovered from the toxicity of previous treatment;

  5. ECOG score ≤ 2 and expected survival period is not less than 3 months;

  6. Adequate organ function defined as:

AST ≤3×ULN; ALT ≤3×ULN; Total bilirubin ≤1.5×ULN; Serum creatinine ≤1.5×ULN, or CCR≥60 mL/min; Hemoglobin ≥60g/L ; Indoor oxygen saturation ≥92%; LVEF≥45%;

  1. Pregnancy testing: females of childbearing potential must have a negative serum or urine pregnancy test;

  2. From the use of study drug to 2 years after treatment, males and female of childbearing potential must agree to use an effective method of contraception

Exclusion Criteria:
  1. Diagnosis of acute promyelocytic leukemia;

  2. History or presence of a CNS disorder;

  3. HBsAg or HBcAb are positive; HCV 、HIV and Syphilis antibody are positive, CMV DNA in peripheral blood is more than≥500 copies /mL;

  4. History of severe hypersensitivity reaction;

  5. History of myocardial infarction, cardiac angioplasty or stenting, unstable angina, New York Heart Association Class II or greater congestive heart failure, atrial fibrillation, or other clinically significant cardiac disease within 12 months before enrollment;

  6. History of organ transplant surgery;

  7. Required systemic application of immunosuppressive or other drugs;

  8. Auto-SCT within the 3 months before enrollment;

  9. Active autoimmune or inflammatory diseases of the nervous system (e.g., Guillain-Barre syndrome (GBS), amyotrophic lateral sclerosis (ALS)) and clinically active cerebrovascular diseases (e.g., cerebral edema, posterior reversible encephalopathy syndrome (PRES));

  10. Requirement for urgent therapy due to ongoing or impending oncologic emergency (eg, leukostasis or tumor lysis syndrome (TLS)) ;

  11. Presence or suspicion of a fungal, bacterial, viral, or other infection that is uncontrolled or requiring antimicrobials for management;

  12. Live vaccine received within the ≤ 4 weeks before enrollment;

  13. Persons with serious mental illness;

  14. History of major surgical operations four weeks before enrollment;

  15. History of alcoholism or substance abuse;

  16. Was identified by the investigators as unsuitable to participate in the study

Contacts and Locations

Locations

Site City State Country Postal Code
1 The First Affiliated Hospital, Zhejiang University Hangzhou China

Sponsors and Collaborators

  • Zhejiang University

Investigators

  • Principal Investigator: He Huang, MD, The First Affiliated Hospital, Zhejiang University

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
He Huang, Professor, Zhejiang University
ClinicalTrials.gov Identifier:
NCT05467202
Other Study ID Numbers:
  • BG-CT-22-002(CLL1)
First Posted:
Jul 20, 2022
Last Update Posted:
Jul 20, 2022
Last Verified:
Jul 1, 2022
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No

Study Results

No Results Posted as of Jul 20, 2022