Pancreatic Cancer Clinical Trial
Official title:
An Open-label, Uncontrolled, Single-arm Pilot Study to Evaluate Vascular Interventional Therapy Mediated Mesothelin-targeted Chimeric Antigen Receptor T Cells in Advanced Pancreatic Carcinoma
Pancreatic carcinoma typically has a high recurrence rate and very poor prognosis. Surgery is the best choice for the treatment of pancreatic cancer, but for those advanced pancreatic cancer patients，when surgery is not available，chemotherapy combined with radiation therapy or interventional therapy is commonly used in the treatment，but the prolonging survival effect is not obvious. And now, some clinical researchers use CAR-T cells in the treatment of pancreatic carcinoma, according to the existing results, therapeutic effects are not as good as expecting. One of the most likely reasons is that they continued to use the intravenous infusing of CART cells to patients, when the T cells into the blood circulation, will result in decreased tumor activity and more potential adverse effects. We believe that a suitable TAA targeted-CAR-T cells will be an effective way to treat cancer, as long as the pathway of the cell infused to the body can not only improve the drug concentration of the tumor site but reduce the potential off-target side effects. In order to achieve this goal, it is probably the best choice to use vascular intervention to mediate CAR-T cells infusion. Mesothelin is a cell-surface antigen implicated in tumor invasion, which is highly expressed in pancreatic carcinoma but low-level expressed in mesothelia. We design a 2nd CART cells targeted with mesothelin, and use vascular intervention mediated CAR-T infusion to patients. We hope deliver anti-mesothelin CART cells locally can reducing the side effects while enhancing the antitumor affect by more CART cells accumulate in tumor sites while less can reach normal mesothelial tissue.
This study is being conducted to assess vascular interventional therapy mediated anti-mesothelin-CAR-T(meso-CAR-T) cells safety and efficacy in treating patients with advanced pancreatic carcinoma.The investigators constructed a 2nd CAR, using mesothelin as target, using 4-1BB as co-stimulator. The source of T cells used to prepare CAR-T should be autologous. The infusion dose is (1-10)×106 meso-CAR positive T cells/kg, and the specific cells numbers depends on the situation of individual CAR-T cells preparation. The infusion way is vascular interventional mediated, which would undergo cannula--DSA radiography--CAR-T cells perfusion. The cells perfusion process would lasts 15min to 2 h, and the specific time depends on patent's tumor-burdened state. ;
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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