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Consistency of staining intensity scores for the PD-L1 IHC assay between paired 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 |
Abbreviation: PD-L1 programmed cell death ligand-1, MPE malignant pleural effusion; asamples with discordant tumor proportion scores
