Prognostic Impact of Immune Microenvironment Markers in Tumor and Stroma in Resectable Nsclc

ABSTRACT Aim: Tumor-infiltrating immune cells have been proved to play an important role in tumor progression. In this study we have analyzed the expression of 11 immune related genes in both tumor and stroma samples of resectable NSCLC patients. Methods: In this retrospective study FFPE samples from 117 early-stage NSCLC patients of primary tumor tissue were used. The most representative areas of tumor and tumor stroma of each sample were carefully micro-dissected. RT-PCR using hydrolysis probes (TaqMan, Applied Biosystems) was performed to assess the expression of Treg markers such as: CD127, CD25, FOXP3, CTLA-4, IL-10, TGFB-1, LAG-3, GITR and TNFA as well as CD4 and CD8. Relative gene ex…