Genetics and therapeutic responses to TIL therapy of pancreatic cancer PDX models

Study ID Alternative Stable ID Type
EGAS00001005596 Other

Study Description

Pancreatic cancer is the 7th leading cause of cancer-related deaths worldwide. Checkpoint immunotherapy has not yet showed encouraging results in pancreatic cancer possibly owing to a poor immunogenicity and/or an immune suppressive microenvironment. The aim of this study was to develop patient-derived xenografts (PDX) models and to assess if autologous tumor-infiltrating lymphocytes (TILs) would have anti-tumoral activity in pancreatic cancer. Tumor biopsies from 29 patients were subcutaneously transplanted into NOG mice. Tumor growths were confirmed in 11 out of 29 transplantations. The PDX tumors histologically resembled their original biopsies, but since stromal cells in the PDX model tumors were from mouse, their gene expression differed from the original biopsies. Immune checkpoint ligands other than PD-L1 were expressed in pancreatic cancers but PD-L1 was rarely expressed. One of the three tumors that did express PD-L1 was an adenosquamous cancer and another had a mismatch repair deficiency. TILs were expanded from six tumors and were injected into NOG or human interleukin-2 ... (Show More)

Study Datasets 1 dataset.

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Dataset ID Description Technology Samples
Pancreatic cancer biopsies and matching normal controls from 10 patients were exome sequenced. The same biopsies and PDX models derived from these were also subject to RNA sequencing.
Illumina NovaSeq 6000,NextSeq 500 57

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