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Table 2 PD-L1 expression in MPE cell blocks and matched histology samples

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

TypeTumor proportion score of PD-L1Total (n)Coincidence rate (%)P value
< 1%, n (%)1–49%, n (%)≥50%, n (%)
MPE cell block23 (22.8)38 (37.6)40 (39.6)10185.10.005a
Histology sample26 (25.7)44 (43.6)31 (30.7)101
 Surgical resection3 (27.3)5 (45.5)3 (27.3)1172.70.564
 Biopsy20 (24.1)38 (45.8)25 (30.1)8385.50.005a
 EBUS-TBNA3 (42.9)1 (14.3)3 (42.9)71001.000
  1. Abbreviations: PD-L1 programmed cell death ligand-1, MPE malignant pleural effusion; EBUS-TBNA, endobronchial ultrasound-guided transbronchial needle aspiration biopsy; astatistically significant