Background: Combination therapy with immune checkpoint inhibitors (ICIs) has been widely used for clinical treatment in recent years, which has a better survival benefit. However, not all patients can
Background: Non-specific immunotherapeutics have been evaluated previously in dogs, primarily for cancer treatment. However, there remains a need for a more broadly targeted, general purpose immunothe
Primary outcome(s): Correlation between PD-L1 expression in immune cells and soluble PD-L1 value. Correlation between PD-L1 expression in immune cells or soluble PD-L1 value and PD-L1 expression in tu