Table 2.
EGFR mutational status.
| Diagnosis* | n° (%) | Progressive Disease** | n° (%) |
|---|---|---|---|
| Exon 19 deletion | 64 (60 %) | No detectable mutations | 19 (29.7 %) |
| Exon 19 deletion + | 19 (29.7 %) | ||
| Exon 19 deletion + and T790M + | 26 (40.6 %) | ||
| Exon 21 mutation (L858R) | 35 (33 %) | No detectable mutations | 13 (37.1 %) |
| Exon 21 mutation + | 13 (37.1 %) | ||
| Exon 21 mutation + and T790M + | 9 (25.8 %) | ||
| Other mutations | 7 (7 %) | No detectable mutations | 6 (85.7 %) |
| EGFR-sensitizing mutation + | 1 (14.3 %) | ||
| Mutation + and T790M + | 0 (0 %) |
*Tissue (FFPE); **cfDNA.