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Table 3 Kappa value for inter-PD-L1 antibodies concordance

From: Expression of PD-L1 in triple-negative breast cancer based on different immunohistochemical antibodies

Antibody Tumor cell Immune cell
1 % cut-off 5 % cut-off 10 % cut-off 50 % cut-off
PD-L1 (28-8) to PD-L1 (E1L3N) 0.752 0.745 0.660 0.887 0.607
PD-L1 (28-8) to PD-L1 (SP142) 0.535 0.490 0.558 0.396 0.309
PD-L1 (SP142) to PD-L1 (E1L3N) 0.537 0.551 0.580 0.328 0.305