An Open Label, Single/Multiple Dose Exploratory Clinical Study to Evaluate the Safety, Efficacy, and Cytokinetics of Autologous Humanized Anti-claudin18.2 Chimeric Antigen Receptor T Cell in Advanced Solid Tumor Subjects
Overview
- Phase
- Phase 1
- Intervention
- CAR-CLDN18.2 T-Cells
- Conditions
- Advanced Solid Tumor
- Sponsor
- Peking University
- Enrollment
- 134
- Locations
- 3
- Primary Endpoint
- Dose-limiting toxicity (DLT)
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
An open label, single/multiple dose exploratory clinical study to evaluate the safety, efficacy, and pharmacokinetics of autologous humanized anti-claudin18.2 chimeric antigen receptor T cell in advanced solid tumor.
Detailed Description
This study is an open, single/multiple infusion, dose escalation/dose regimen finding study to assess the safety and pharmacokinetics of CAR-CLDN18.2 T cell therapy, and to obtain the preliminary efficacy results in subjects who have been diagnosed with advanced solid tumor with positive claudin 18.2 expression and failed to standard systemic treatment.
Investigators
Shen Lin
Professor
Peking University
Eligibility Criteria
Inclusion Criteria
- •Aged 18 to 75 years, male or female;
- •Subjects with pathologically confirmed solid tumors (ie, advanced gastric cancer, esophagogastricgastroesophageal junction cancer, and pancreatic cancer) and have been failed to at least first-one prior line of systemic treatment;
- •Tumor tissue samplessample was positive for claudin 18.2 positive through for claudin18.2 IHC staining;assay(≥2+, and ≥40%);
- •Estimated life expectancy \> 12 weeks;
- •According to the RECIST 1.1, there is at least one measurable or unmeasurable tumor lesionslesion;
- •ECOG physical status score 0 \~ 1, within 24 hours prior to apheresis, and at baseline (prior to pre-treatment);
- •Sufficient venous access for mononuclear cell collection (abbreviation: apheresis)
- •Subjects should have adequate organ functions before screening and pre-treatment (at baseline).
- •Female subjects of childbearing age must undergo a serum pregnancy test at screening and prior to preconditioning and the results must be negative, and are willing to use a very effective and reliable method of contraception within 1 year after the last study treatment. The methods that can be used are: bilateral tubal ligation / bilateral salpingectomy or bilateral tubal occlusion; or approved oral, injection or hormone-imparting contraceptive methods; or barrier contraceptive method: containing spermicidal foam / Gel/film/cream/suppository condom or occlusive cap (diaphragm or cervix/cap);
- •Men who have actively sexual intercourse with women with child-bearing potential, must agree to use barrier-based contraception if they have no vasectomy, for example, a condom containing a spermicidal foam/gel/film/paste/suppository, or use a contraceptive method for their spouse (see article 9 of the inclusion criteria). Moreover, all men are absolutely forbidden to donate sperm within 1 year after receiving the last study treatment infusion;
Exclusion Criteria
- •Pregnant or lactating women;
- •HIV, Treponema pallidum or HCV serologically positive;
- •Any uncontrollable active infection, including but not limited to active tuberculosis, HBV infection (HBsAg positive, or HBcAb positive and HBV DNA positive);
- •Subjects have clinically significant thyroid dysfunction determined by investigator (serum thyroid hormone assays TT4, TT3, FT3, FT4, and serum thyroid stimulating hormone TSH) which is not suitable for entering into the study;
- •The side effects caused by the previous treatment of the subjects did not return to CTCAE ≤1; except hair loss and, hyperpigmentation or other tolerable events determined by investigator or laboratory abnormalities allowed by the protocol;
- •Subjects who are using steroidshave recieved ≥15 mg/day glucocorticoid systemically currently within 7 days prior to apheresis; those using inhaled steroids recently or currently are not excluded;
- •Previously allergic to immunotherapy and related drugs, history of severe allergiespreconditioning drug such as cyclophosphamide, fludarabine, or allergiestocilizumab or allergic to components of CT041CAR-CLDN18.2T injection, allergic to β-lactam antibiotics;the CT041 infusion;
- •Previously received any chimeric antigen receptor-modified T-cells(including CAR-T、TCR-T) .
- •Subjects have untreated or symptomatic brain metastases;
- •Subjects have central or extensivelywith centralcor diffused metastases in lung and .extensiveor diffused metastases in liver;liveror with rapid tumor progression since screening period evaluated by the investigator preconditioning (at baseline);
Arms & Interventions
CAR-CLDN18.2 T-Cells
The subjects enrolled will be sequentially assigned to the corresponding dose level.
Intervention: CAR-CLDN18.2 T-Cells
Cohort 1
CT041 monotherapy in patients with GI cancers who failed standard chemotherapy
Intervention: CAR-CLDN18.2 T-Cells
Cohort 2
CT041 plus anti-PD1 therapy in patients with GI cancers who failed standard chemotherapy
Intervention: CAR-CLDN18.2 T-Cells
Cohort 2
CT041 plus anti-PD1 therapy in patients with GI cancers who failed standard chemotherapy
Intervention: PD-1 Monoclonal Antibody
Cohort 3
CT041 sequential treatment after first-line therapy in GC/GEJ
Intervention: CAR-CLDN18.2 T-Cells
Cohort 3
CT041 sequential treatment after first-line therapy in GC/GEJ
Intervention: Chemotherapy
Cohort 4
prior treatment failure to anti-CLDN18.2 monoclonal antibody
Intervention: CAR-CLDN18.2 T-Cells
Outcomes
Primary Outcomes
Dose-limiting toxicity (DLT)
Time Frame: 28 days of single infusion
Safety
Maximum tolerated dose (MTD)
Time Frame: 28 days of single infusion
tolerability
Secondary Outcomes
- Antitumor efficacy-Progression-free survival (PFS)(1 year)
- Antitumor efficacy-Duration of response (DOR)(1 year)
- Pharmacokinetics (the number of cell copies and cell persistence duration in peripheral blood)(26 weeks)
- Number of participants with treatment-related adverse events as assessed by CTCAE v5.0(1 year)
- Antitumor efficacy-Duration of disease control (DDC)(1 year)
- Antitumor efficacy-Overall survival (OS)(1 years)
- Antitumor efficacy-Objective response rate (ORR)(1 year)
- Antitumor efficacy-Disease control rate (DCR)(1 year)
- Long term survival follow up(15 years)