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Table 4 Consistency of staining intensity scores for the PD-L1 IHC assay between paired samples

From: Cytology cell blocks from malignant pleural effusion are good candidates for PD-L1 detection in advanced NSCLC compared with matched histology samples

Type PD-L1 staining intensity scoring Total (n)
0 1+ 2+ 3+
MPE cell blocks 23 23 + 2a 17 + 4a 20 + 9a 83 + 15a
Histology samples 23 28 + 10a 15 + 4a 17 + 1a 83 + 15a
  1. Abbreviation: PD-L1 programmed cell death ligand-1, MPE malignant pleural effusion; asamples with discordant tumor proportion scores