Slightly larger proportion of spleen cytotoxic T cells (CD3+CD8+CD107a+, Figure S6d, Supporting Information) and that of tumor‐infiltrating cytotoxic T cells were both identified in PNVAC+ISA 51 group (Figure S6e, Supporting Information, free vaccine+ISA 51 vs PNVAC+ISA 51: 14.73 vs 20.47, P = 0.0177). The gene discussed is CD8A; the disease is neoplasm.