Pancreatic Cancer Clinical Trial
Official title:
Analysis of T Cells to Tetanus Toxoid Antigens in Patients With Pancreatic Cancer Treated With Gemcitabine
The investigator is developing an immune therapy against pancreatic cancer. Immune cells, known as "T cells with tumor killing capacity", are involved in this immune therapy. In mice with pancreatic cance there is evidence that one tetanus toxoid (TT) vaccination (that patients receive from childhood) combined with Gemcitabine activates these killer T cells. (Gemcitabine improves T cell responses) These killer T cells are able to destroy tumor cells uploaded with TT protein (such studies are planned in future clinical trials). The goal of this study is to test whether one TT vaccination combined with Gemcitabine treatment activates the same T cells in pancreatic cancer patients.
Treating PDAC patients with gemcitabine and one TT booster Gemcitabine will be delivered as is standard of care. However, doses may be modified by the treating physician based on patient tolerance. Patients diagnosed with PDAC will be treated with Gemcitabine and boosted once with the human childhood vaccine to TT by Dr. Chuy as outlined in Fig 2. Gemcitabine will be administered on days 1, 8, 15 every 28 days, and one booster with the human TT childhood vaccine will be administered on day 8 (there must be 2 hrs between the TT booster and the Gemcitabine treatment). Blood will be drawn just before each Gemcitabine treatment, except on day 8 at least 2 hrs will be needed between the blood draw and Gemcitabine treatment because the TT booster needs to be given just after the blood draw but 2 hrs before the Gemcitabine treatment (Fig 2). Three tubes of 10 mls each with heparinized blood will be needed for the isolation of peripheral blood mononuclear cells (PBMC). Two tubes will be used to analyze the T cells and one tube for analyzing the MDSC. The memory T cells and MDSC will be analyzed in the laboratory of Dr. Gravekamp. ;
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