Table 2 †EGFR mutation for each patient who underwent tumor re-biopsy and liquid biopsy at ‡PD time
EGFR mutation | Tumor (n = 10) | Liquid (n = 18) |
|---|---|---|
19del/ T790M | 2 (20.0%) | 4 (22.2%) |
L858R/ T790M | 1 (10.0%) | 0 |
19del/ - | 4 (40.0%) | 3 (16.7%) |
L858R/ - | 1 (10.0%) | 1 (5.6%) |
negative | 1 (10.0%) | 10 (55.6%) |
unsuccessful | 1 (10.0%) | 0 |
concordance between tumor and liquid biopsy | 4/10 (40.0%) | |