FOXP3 and neoplasm: Based on the impact of CAF-S1 fibroblasts on immunosuppression, we next investigated Tumor infiltrating lymphocyte (TIL) density and localization before and after chemotherapy in HGSOC patients by performing CD3, CD8 and FOXP3 IHC staining in the Retrospective Curie 1 cohort (Fig. 2A).