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Table 2 Cell lines with differential PD-L1 expression stained with the PD-L1 (SP263) antibody

From: Development of a programmed cell death ligand-1 immunohistochemical assay validated for analysis of non-small cell lung cancer and head and neck squamous cell carcinoma

  Membrane Cytoplasm
Cell line % PD-L1+ Average intensity % PD-L1+ Average intensity
MCF-7 0 NA 0 NA
HCT116 5 1.25 5 0.75
ACHN 50 1 0 NA
LOX 95 2.5 85 1.5
MDA-MB231 100 2.25 90 0.75
HEK293-vector 0 NA 0 NA
HEK293
PD-L1+
5 3 5 3
HEK293
PD-L1++
15 2.75 15 2.75
HEK293
PD-L1+++
20 2.75 20 2.75
HEK293
PD-L2+++
0 0 0 0
  1. NA not applicable, PD-L1 programmed cell death ligand-1, PD-L2 programmed cell death ligand-2