Long-term Follow-up Study of Allogeneic Gamma Delta (γδ) CAR T Cells

Sponsor
Adicet Bio, Inc (Industry)
Overall Status
Enrolling by invitation
CT.gov ID
NCT04911478
Collaborator
(none)
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Study Details

Study Description

Brief Summary

The purpose of this study is to assess long-term side effects from subjects who receive an Adicet Bio γδ CAR T cell product. Subjects will join this study once they complete the parent interventional study. No additional study drug will be given, but subjects can receive other therapies for their cancer while they are being followed for long term safety in this study. For a period of 15 years from the first administration of Adicet Bio allogeneic γδ CAR T cell product, subjects will be assessed for long-term safety and survival through collection of data that include safety, efficacy, pharmacokinetics and immunogenicity.

Detailed Description

This is a non-therapeutic, multi-center, long-term follow-up (LTFU) study of subjects who received an Adicet Bio allogeneic γδ CAR T cell product that has been genetically engineered to express the anti-CD20 CAR by transduction with a self-inactivating, replication incompetent gamma retroviral vector. The period of follow-up is 15 years after the administration of the γδ CAR T cell product.

The study involves up to 15 years post-infusion monitoring of subjects who have been exposed to a genetically engineered CAR in Adicet Bio clinical studies. Upon early termination/discontinuation or completion of the parent interventional study, subjects will enroll into this study. Collection of these data will further define the risk-benefit and efficacy profile Adicet allogeneic γδ CAR T cell investigational products.

This is an observational study, and the elements of the study design are per published guidelines for gene therapy medicinal products that utilize integrating viral vectors such as gamma retrovirus and it is important to evaluate any delayed adverse events after infusion with such products.

Study Design

Study Type:
Observational
Anticipated Enrollment :
50 participants
Observational Model:
Case-Only
Time Perspective:
Prospective
Official Title:
Long-term Follow-up Protocol for Subjects Treated With Adicet Allogeneic Gamma Delta (γδ) CAR T Cell Investigational Products
Actual Study Start Date :
Feb 14, 2022
Anticipated Primary Completion Date :
Aug 1, 2038
Anticipated Study Completion Date :
Aug 1, 2039

Arms and Interventions

Arm Intervention/Treatment
Subjects from Adicet Bio allogeneic γδ CAR T cell interventional studies.

This is a rollover protocol designed to provide long-term follow-up to all subjects previously enrolled in Adicet Bio allogeneic γδ CAR T cell study. Patients will be followed for up to 15 years post treatment of Adicet Bio allogeneic γδ CAR T cell investigational products.

Genetic: ADI-001
No study drug is administered in this study. Patients who have received Adicet allogeneic γδ CAR T cell therapy will be evaluated in this trial for long-term safety and efficacy

Outcome Measures

Primary Outcome Measures

  1. Long-term safety of Adicet Bio allogeneic γδ CAR T cell products [15 years]

    Occurrence of new Adverse Events of Special interests, Serious AEs and malignancies

Secondary Outcome Measures

  1. Measure quantitative immunoglobulin and peripheral blood immunophenotyping [15 years post last treatment]

  2. Monitor for the presence of replication competent retrovirus (RCR) [15 years post last treatment]

    Test for RCR following treatment with Adicet Bio allogeneic γδ CAR T cell products by QCR analysis

  3. Duration of ADI-001 persistence [15 years post last treatment]

    Defined as duration from dosing to undetectable levels of Adicet allogeneic γδ CAR T cell per microliter blood

  4. Overall Response Rate by Lugano Criteria [15 years post last treatment]

    Overall Response Rate by Lugano Criteria

  5. Duration of Response by Lugano Criteria [15 years post last treatment]

    Duration of Response by Lugano Criteria

  6. Progression Free Survival by Lugano Criteria [15 years post last treatment]

    Progression Free Survival by Lugano Criteria

  7. Time To Progression by Lugano Criteria [15 years post last treatment]

    Time To Progression by Lugano Criteria

  8. Overall Survival [15 years post last treatment]

    Overall Survival from date of first treatment until date of death

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • All patients who received any Adicet allogeneic CAR T investigational product and have either completed the core treatment protocol or have discontinued early

  • All patients who are willing and able to adhere to the study visit schedule and other protocol requirements.

  • Capable of giving signed informed consent which includes compliance with requirements and restrictions listed in the informed consent form (ICF) and protocol

Exclusion Criteria:
  • There are no specific exclusion criteria for this study

Contacts and Locations

Locations

Site City State Country Postal Code
1 Stanford University Medical Center Stanford California United States 94305
2 Norton Cancer Institute Louisville Kentucky United States 40207
3 Baylor Scott & White Research Institute Dallas Texas United States 75204
4 MD Anderson Caner Center Houston Texas United States 77030
5 Medical College of Wisconsin Milwaukee Wisconsin United States 53226

Sponsors and Collaborators

  • Adicet Bio, Inc

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Adicet Bio, Inc
ClinicalTrials.gov Identifier:
NCT04911478
Other Study ID Numbers:
  • ADI-20200102
First Posted:
Jun 3, 2021
Last Update Posted:
Jun 9, 2022
Last Verified:
Jun 1, 2022
Individual Participant Data (IPD) Sharing Statement:
No
Plan to Share IPD:
No
Studies a U.S. FDA-regulated Drug Product:
Yes
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Adicet Bio, Inc
Additional relevant MeSH terms:

Study Results

No Results Posted as of Jun 9, 2022