CAR T Therapy With GCAR1 for Relapsed Alveolar Soft Part Sarcoma

NCT ID: NCT06813417

Last Updated: 2025-04-10

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: EARLY_PHASE1
• Total Enrollment: 1 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-01-30
• Study Completion Date: 2030-01-30

Brief Summary

A single patient study to determine whether GCAR1 is safe and effective for re-treatment of alveolar soft part sarcoma (ASPS) with GPNMB surface expression that has relapsed and is not responding to usual treatment.

Detailed Description

CLIC-YYC-GPNMB-04 is an Open Label Individual Patient (OLIP)/Single Patient Study (SPS) developed according to the Health Canada template and guidelines released in 2019 for studies to access therapies not otherwise available to patients, in the situation where there are no options of treatment or cure remaining. The patient under consideration for CLIC-YYC-GPNMB-04 has refractory, progressive metastatic alveolar soft part sarcoma (ASPS). There are no standard therapies for relapsed ASPS known to provide potential for cure, and there are no clinical trials available in Canada for consideration. We propose to re-treat the patient with GCAR1, a patient-specific cell therapy product containing a mixture of autologous lymphocytes transduced with a lentiviral vector containing a chimeric antigen receptor (CAR) that enables the specific targeting towards tumor cells expressing the cell surface protein glycoprotein non-metastatic B (GPNMB). The patient was previously treated with GCAR1 under CLIC-YYC-GPNMB-01 (c#276646).

Conditions

Sarcoma; Alveolar Soft Part Sarcoma (ASPS)

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

GCAR1

This is an intrapatient two-dose escalation study. The patient will receive two separate intravenous infusions of cryopreserved, autologous GCAR1, with at least three months (+/- 30 days) between infusions. Both infusions will be preceded by standard lymphodepleting chemotherapy (Fludarabine 40 mg/m2 x 3 days, cyclophosphamide 600 mg/m2 x 2 days) . Dose 1 will be 5.0E6 CAR+ T cells/kg patient body weight, Dose 2 will be 2.5E7 CAR+ T cells/kg patient body weight. Infusions will be intravenous, single infusions.

Group Type: EXPERIMENTAL

GCAR1

Intervention Type: BIOLOGICAL

GCAR1 is a patient-specific cell therapy product containing a mixture of autologous lymphocytes transduced with a lentiviral vector encoding a chimeric antigen receptor (CAR) targeting GPNMB. The CAR comprises a single-chain variable fragment (scFv) binding domain derived from a fully human GPNMB-specific monoclonal antibody (CDX-011), a CD8 hinge and transmembrane domain, and the CD137 (4-1BB) and CD3 zeta chain intracellular signaling domains. Following infusion, the autologous GPNMB CAR T-cells expressing the genetically engineered anti-GPNMB CAR enable the specific targeting of GPNMB-expressing cells. Upon binding to GPNMB-expressing cells, the CAR transmits T cell activation signals that promote the elimination of target cells through CAR T cell degranulation and the release of cytotoxic molecules. The cellular signal also facilitates CAR T cell proliferation and persistence that may enable prolonged disease control through immunosurveillance3.

Interventions

GCAR1

GCAR1 is a patient-specific cell therapy product containing a mixture of autologous lymphocytes transduced with a lentiviral vector encoding a chimeric antigen receptor (CAR) targeting GPNMB. The CAR comprises a single-chain variable fragment (scFv) binding domain derived from a fully human GPNMB-specific monoclonal antibody (CDX-011), a CD8 hinge and transmembrane domain, and the CD137 (4-1BB) and CD3 zeta chain intracellular signaling domains. Following infusion, the autologous GPNMB CAR T-cells expressing the genetically engineered anti-GPNMB CAR enable the specific targeting of GPNMB-expressing cells. Upon binding to GPNMB-expressing cells, the CAR transmits T cell activation signals that promote the elimination of target cells through CAR T cell degranulation and the release of cytotoxic molecules. The cellular signal also facilitates CAR T cell proliferation and persistence that may enable prolonged disease control through immunosurveillance3.

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

• The patient must provide informed consent
• Adequate organ function, defined as creatinine clearance >30 ml/min and LVEF >45%

Exclusion Criteria

• Any active uncontrolled infection
• Pregnancy or nursing
• Anti-cancer therapy within 21 calendar days prior to the first dose of lymphodepleting chemotherapy. If subject has received anti-cancer therapy, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy as per the discretion of the Qualified Investigator/Co-Investigator

• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

Alberta Health Services, Calgary

OTHER

Sponsor Role: collaborator

Alberta Precision Laboratories

UNKNOWN

Sponsor Role: collaborator

University of Calgary

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Arthur J.E. Child Comprehensive Cancer Centre

Calgary, Alberta, Canada

Countries

Canada

Other Identifiers

HREBA.CC-24-0417

Identifier Type: OTHER

Identifier Source: secondary_id

CLIC-YYC-GPMB-04

Identifier Type: -

Identifier Source: org_study_id