Table 2 Programmed death ligand-1 (PD-L1) expression in colon cancer
Number of PD-L1 positive tumour cells | Entire cohort (N = 572) (%) | MSI (N = 172) (%) | MSS (N = 400) (%) |
|---|---|---|---|
None | 264 (46) | 47 (27) | 217 (54) |
0 < PD-L1 ≤ 1% | 233 (41) | 73 (42) | 160 (40) |
1% < PD-L1 ≤ 5% | 40 (7) | 21 (12) | 19 (5) |
< 5% PD-L1 ≤ 20% | 10 (2) | 8 (5) | 2 (1) |
< 20% PD-L1 ≤ 50% | 11 (2) | 10 (6) | 1 (0) |
PD-L1 > 50% | 14 (2) | 13 (8) | 1 (0) |