RE:RE:ONCY's pelareorep upregulates PD-(L)1 / PD-L2Also - upregulated levels of PD-L1 (High-PD-L1) are associated with high levels of tumor infilitrating lymphocytes (TiLs) and stem cell markers which in turm serve to remodel an immunosupressive TME found surrounding cancer cells, and which contributes to a cancer cell's growth and spread.