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Spots Global Cancer Trial Database for SBRT Plus vNKT for Pancreatic Cancer

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Trial Identification

Brief Title: SBRT Plus vNKT for Pancreatic Cancer

Official Title: Stereotactic Body Radiation Therapy and vNKT Cell Adoptive Therapy for Advanced Pancreatic Cancer: a Phase 2 Trial

Study ID: NCT05783076

Study Description

Brief Summary: Owing to that the previous study of the investigators showed that SBRT plus pembrolizumab and trametinib provided favorable outcomes compared with SBRT plus gemcitabine for pancreatic cancer, therefore, the investigators aim to further investigate the efficacy and safety of SBRT plus another kind of immunotherapy, namely adoptive cell therapy (vNKT cell), for advanced pancreatic cancer.

Detailed Description: Pancreatic cancer still remains one of the most lethal malignancies and fourth leading cancer cause of death in US, with a slight increasing incidence and the lowest 5-year survival rate of 9%. Although surgical resection is considered as the radical treatment, most patients were not amenable to surgery due to the initial diagnosis of advanced pancreatic cancer. For those patients, stereotactic body radiation therapy (SBRT), recommended as the local treatment, combining with chemotherapy is the optimal treatment. Despite improved knowledge about the genetic background and an increasing understanding of the tumor microenvironment, immunotherapy especially immune checkpoint inhibitors, although efficient for many solid malignancies, including metastatic melanoma and lung cancer, have not yielded any clinical benefit in pancreatic cancer. In addition to immune checkpoint inhibitors, chimeric antigen receptor T cell (CAR-T) has shown promising efficacy in hematologic malignancies. Nowadays, adoptive cell therapy includes CD8+ T cells and NK cells modified with chimeric antigen receptors. However, due to limited technology, expansion of specific CD8+ T cells is quite difficult. Additionally, there is lack of specific tumor antigens in solid tumors, which results in unsatisfactory outcomes of CAR-T and CAR-NK cells targeting solid tumors. Therefore, novel cell therapies may provide insights into therapies for solid tumors. Recently, vNKT and γδT cells used in trials of cell therapy have aroused attention. NKT cells possess both phenotypes of T cells and NK cells. Hence, NKT cells could secret various cytokines and chemokines after stimulations to enhance anti-tumor immunity independent of MHC. Also, cytotoxic effects of NKT cells could be activated via T cell receptors (TCR) targeting specific antigens. There are two kinds of NKT cells. One is classic NKT cells with invariant TCR which are specialized CD1d-restricted T cells that recognize lipid antigens, called iNKT (invariant NKT) cells. The other is non-CD1d-restrcited. This CD8+ NKT cells has more potent anti-tumor effects than conventional T and NK cells, which is manifested by killing tumor cells and myeloid derived suppressor cells. Owing to recognition of MHC-restricted antigens via diverse TCRs, they are called vNKT (variant NKT) cells. Furthermore, our previous studies has clarified favorable outcomes from the synergy of SBRT plus immunotherapy for pancreatic cancer. Therefore, the investigators aim to investigate the efficacy and safety of SBRT plus vNKT cell adoptive therapy for advanced pancreatic cancer.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Changhai Hospital affiliated to Naval Medical University, Shanghai, , China

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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