Figure 6

Expression of EPHRIN-A1 tends to be associated with worse survival but does not explain the absence of prognostic value of intratumoral CD8 ⁺ T cells. Intratumoral CD8 ⁺ T cells in the absence of EPHRIN-A1 are not associated with a better prognosis. (A) Tissues derived from biopsies of head and neck cancers were stained with anti-EPHRIN-A1 antibody by simple immunochemical analysis. For overall survival analysis, high and low levels of this population were defined as low (≤ 20% of positive staining cells) versus high (> 20% positive staining cells). (B) CD8 and EPHRIN-A1 stainings were measured in biopsies derived from head and neck cancer patients. The combination of these two stainings and the overall survival are represented. For overall survival analysis, the high and low group for each population were combined.