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Epidermal growth factor receptor (EGFR) expression score in biopsies and resected specimens
| EGFR expression score | EGFR expression in pretreatment biopsies N (%) | EGFR expression in resected specimen N (%) |
|---|---|---|
| 0 | 22 (44) | 23 (46) |
| 1 + | 18 (36) | 8 (16) |
| 2 + | 5 (10) | 11 (22) |
| 3 + | 5 (10) | 4 (8) |
| Not applicable | 0 (0) | 4 (8) |
