Table 2 Results of molecular testing in our cohort
Item | Number | % | |
|---|---|---|---|
Final EGFR result (including ctDNA and FFPE) | Positive | 16 | 12.5% |
Negative | 112 | 87.5% | |
NA | 3 | ||
Exon involved in mutant EGFR | 19 | 9 | 56.3% |
L858R mutation in exon 21 | 4 | 25% | |
20 | 2 | 12.5% | |
18 | 1 | 6.2% | |
ALK rearrangement | Positive | 6 | 4.7% |
Negative | 122 | 95.3% | |
NA | 3 | ||
PDL1 expression | Positive (≥ 1%) | 9 | 52.9% |
Negative | 8 | 47. 1% | |
NA | 114 | ||