CD8A and neoplasm: Within T cell subsets, CD8+ TIL counts increased significantly (p = 0.040) in the recurrent tumours (n = 13, 157.48 ± 91.13 cells/mm2) compared to the primary tumours (n = 13, 86.10 ± 57.29 cells/mm2) (Figure 3B) with 9 of 13 cases showing higher CD8+ TILs at recurrence (Supplementary Figure 1).