Table 3.
PD-L1 expression.
| Histotype | NO PD-L1 (<1% positive cells) | PD-L1 LOW (1–49% positive cells) | PD-L1 HIGH (>50% positive cells) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IC 0 |
IC 1 |
IC 2 |
IC 3 |
IC 0 |
IC 1 |
IC 2 |
IC 3 |
IC 0 |
IC 1 |
IC 2 |
IC 3 |
|
| CS (9) |
1 | 2 | 2 | 4 | ||||||||
| PLC (21) |
3 | 4 | 1 | 1 | 9 | 3 | ||||||
| GCC (7) |
1 | 1 | 4 | 1 | ||||||||
| SCC (6) |
2 | 1 | 2 | 1 | ||||||||
| PB (1) |
1 | |||||||||||
IC, infiltrating immune cells; scored as reported in methods section.
Histotype abbreviations: giant cell carcinoma (GCC), pleomorphic carcinoma (PLC), spindle cell carcinoma (SCC), carcinosarcoma (CS) and pulmonary blastoma (PB).