GPC3/Mesothelin-CAR-γδT Cells Against Cancers

Phase 1

Recruiting

• Conditions: Liver Cancer; Solid Tumor, Adult; Pancreas Cancer; CAR-T Cell Therapy; Lung Cancer; Mesothelioma
• Interventions: Biological: Cell therapy for solid tumors

• Registration Number: NCT06196294
• Lead Sponsor: Second Affiliated Hospital of Guangzhou Medical University

Brief Summary

The third generation of GPC3/mesothelin targeted CAR-γδT cells have been constructed and their anti-cancer function has been verified by multiple in vitro and in vivo studies. Clinical studies will be performed to test anti-cancer function of the CAR-γδT cells for immunotherapy of human cancer patients with GPC3 or Mesothelin expressions. In this phase I study, the safety, tolerance, and preliminary efficacy of the GPC3/Mesothelin-CAR-γδT cell immunotherapy on human cancers will firstly be evaluated.

Detailed Description

1. Choose appropriate patients with advanced solid cancers, with written consent for this study;

2. Perform biopsy to determine the expression of GPC3 or Mesothelin of the tumors by western blotting or IHC;

3. Collect blood from the patients and isolate mononuclear cells, select and grow γδT cells and transfect the γδT cells with GPC3 or Mesothelin targeting CAR, amplify the transfected γδT cells as needed, test the quality and killing activity of the CAR-γδT cells and then transfer them back the patients via systemic or local injections, and follow up closely to collect related results as required;

4. To enhance the killing capability, cotreatment the patients with PD1/PDL1/CTLA4 antibodies may be applied;

5. Evaluate the clinical results as needed.

Study Timeline

• Study First Submitted: 2023-12-22
• Study First Submitted QC: 2024-01-06
• Study First Posted: 2024-01-09
• Study Start: 2024-05-10
• Status Verified: 2024-06
• Last Update Submitted: 2024-06-22
• Last Update Posted: 2024-06-26
• Primary Completion: 2030-11-30
• Study Completion: 2036-12-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

1. Patients with advanced cancer that expresses GPC3 or Mesothelin protein; 2. Life expectancy >12 weeks; 3. Adequate heart, lung, liver, kidney, and blood function; 4. Available autologous transduced T cells with greater than or equal to 20% expression of GPC3/Mesothelin-CAR determined by flow-cytometry and killing of Mesothelin-positive targets greater than or equal to 20% in cytotoxicity assay; 5. Informed consent explained to, understood by and signed by patient/guardian. Patient/guardian given copy of informed consent.

Exclusion Criteria

1. Had accepted gene therapy before;
2. Severe virus infection such as HBV, HCV, HIV, et al;
3. Known HIV positivity;
4. Active infectious disease related to bacteria, virus,fungi,et al;
5. Other severe diseases that the investigators consider not appropriate;
6. Pregnant or lactating women;
7. Systemic steroid treatment (greater than or equal to 0.5 mg prednisone equivalent/kg/day);
8. Other conditions that the investigators consider not appropriate. -

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
γδT cell therapy for solid tumor	Cell therapy for solid tumors	-
CAR-γδT cell therapy for solid tumor	Cell therapy for solid tumors	-

Primary Outcome Measures

Name	Time	Method
Number of Patients with Dose Limiting Toxicity	Six months	A dose limiting toxicity is defined as any toxicity that is considered to be primarily related to the γδT cells, which is irreversible, or life threatening or hematologic or non-hematologic Grade 3-5.

Secondary Outcome Measures

Name	Time	Method
Percent of Patients with best response as either complete remission or partial remission.	Six months	Response rates will be estimated as the percent of patients whose best response is either complete remission or partial remission by combining the data from the patients. To compare with historical data, a 95% confidence interval will be calculated for the response rate.
Median γδT cell persistence	Six years	Median γδT cell persistence will be measured by quantitative rt-PCR.

Trial Locations

Locations (1)

The Second Affiliated Hospital of Guangzhou Medical University; 🇨🇳 Guangzhou, Guangdong, China