The characteristics of TIL infiltration in surgically resected tumours were further compared between the two groups, and no significant difference was found in the levels of CD8+ T-cell infiltration (Fig. 3C), but the MPR group showed higher levels of CD4+ T-cell infiltration (p = 0.02, Fig. 3D and Supplementary Fig. 4). Here, CD4 is linked to neoplasm.