AMpLify: CRISPR-Edited Allogeneic Anti-CLL-1 CAR-T Cell Therapy in Patients With Relapsed/Refractory Acute Myeloid Leukemia

Sponsor
Caribou Biosciences, Inc. (Industry)
Overall Status
Not yet recruiting
CT.gov ID
NCT06128044
Collaborator
(none)
70
2
51.9

Study Details

Study Description

Brief Summary

CB-012 is an allogeneic chimeric antigen receptor (CAR-T) cell therapy that targets C-type lectin-like molecule-1 (CLL-1). This is a Phase 1 study to evaluate the safety, preliminary efficacy, and pharmacokinetics, of CB-012 (the study treatment) in adults with acute myeloid leukemia (AML) that has come back after prior treatment (relapsed) or did not respond or is no longer responding to other treatment (refractory). Participants must have received at least 1 but not more than 3 prior lines of treatment for AML .

Condition or Disease Intervention/Treatment Phase
Phase 1

Study Design

Study Type:
Interventional
Anticipated Enrollment :
70 participants
Allocation:
Non-Randomized
Intervention Model:
Sequential Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Phase 1, Multicenter, Open-Label Study of CB-012, a CRISPR-Edited Allogeneic Anti-CLL-1 CAR-T Cell Therapy in Patients With Relapsed/Refractory Acute Myeloid Leukemia
Anticipated Study Start Date :
Dec 5, 2023
Anticipated Primary Completion Date :
Nov 1, 2027
Anticipated Study Completion Date :
Apr 1, 2028

Arms and Interventions

Arm Intervention/Treatment
Experimental: Dose Escalation of CB-012

Part A (Dose Escalation) of CB-012 with increasing doses using a 3+3 design, during which the MTD and/or RDE will be identified.

Drug: CB-012
CB-012 allogeneic CAR-T cell therapy targeting CLL-1 Cyclophosphamide and Fludarabine chemotherapy for lymphodepletion
Other Names:
  • Cyclophosphamide
  • Fludarabine
  • Experimental: Dose Expansion of CB-012

    Part B (Dose Expansion) - participants will be enrolled to receive CB-012 at the RDE and/or MTD determined in Part A in order to the determine the RP2D.

    Drug: CB-012
    CB-012 allogeneic CAR-T cell therapy targeting CLL-1 Cyclophosphamide and Fludarabine chemotherapy for lymphodepletion
    Other Names:
  • Cyclophosphamide
  • Fludarabine
  • Outcome Measures

    Primary Outcome Measures

    1. (Part A) Number of patients with dose limiting toxicities (DLT) [28 days]

      Number of patients with DLTs during the 28 days following the first administration of CB-012.

    2. (Part B) Overall Response Rate (ORR) [12 months]

      The ORR will be evaluated by European Leukemia Net (ELN) criteria

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Documented diagnosis of AML with either refractory or relapsed disease,

    • Non-proliferative disease

    • No more than 3 prior lines of therapy (induction, consolidation with or without allogeneic stem cell transplant, and maintenance are considered 1 line of therapy)

    • No available therapy with reasonable survival benefit

    • Eastern Cooperative Oncology Group (ECOG) performance status grade of 0 or 1 and fit for allogeneic stem cell transplant

    • Adequate renal, hepatic, pulmonary, and cardiac function, with specific laboratory criteria

    • Women of child-bearing potential and men with a female partner who has child-bearing potential must agree to use acceptable, effective methods of birth control.

    Exclusion Criteria:
    • Acute promyelocytic leukemia

    • Extra-medullary disease (EMD) that is metabolically inactive by 18-FDG PET-CT

    • Prior treatment with CAR-T cell therapy

    • Allogeneic stem cell transplant within 100 days before lymphodepletion

    • Active graft-vs-host disease requiring therapy

    • Known active or prior history of central nervous system involvement

    • Seropositive for or history of human immunodeficiency virus (HIV)

    • Vaccinated with live, attenuated vaccine within 4 weeks prior to lymphodepletion

    • Active hepatitis B or C infection

    • Primary immunodeficiency or autoimmune disease

    • Known life-threatening allergies, hypersensitivity, or intolerance to CB-012 or its excipients

    Other inclusion and exclusion criteria may apply.

    Contacts and Locations

    Locations

    No locations specified.

    Sponsors and Collaborators

    • Caribou Biosciences, Inc.

    Investigators

    None specified.

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Caribou Biosciences, Inc.
    ClinicalTrials.gov Identifier:
    NCT06128044
    Other Study ID Numbers:
    • CB12A
    First Posted:
    Nov 13, 2023
    Last Update Posted:
    Nov 13, 2023
    Last Verified:
    Nov 1, 2023
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Nov 13, 2023