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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

Type Tumor proportion score of PD-L1 Total (n) Coincidence rate (%) P value
< 1%, n (%) 1–49%, n (%) ≥50%, n (%)
MPE cell block 23 (22.8) 38 (37.6) 40 (39.6) 101 85.1 0.005a
Histology sample 26 (25.7) 44 (43.6) 31 (30.7) 101
 Surgical resection 3 (27.3) 5 (45.5) 3 (27.3) 11 72.7 0.564
 Biopsy 20 (24.1) 38 (45.8) 25 (30.1) 83 85.5 0.005a
 EBUS-TBNA 3 (42.9) 1 (14.3) 3 (42.9) 7 100 1.000
  1. Abbreviations: PD-L1 programmed cell death ligand-1, MPE malignant pleural effusion; EBUS-TBNA, endobronchial ultrasound-guided transbronchial needle aspiration biopsy; astatistically significant