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EGFR mutation status in the studied lung adenocarcinomas.
| EGFR | Exon | No. of patients | Percentage of patients | Mutation (presence or absence)/no. of tests performed |
|---|---|---|---|---|
| EGFR wild-type | 18, 19, 20 and 21 | 64 | 64/71 (90%) | 64/71 (90%) |
| Exon 19 deletion | 19 | 4 | 4/7 (57.1%) | 7/71 (10%) |
| Exon 20 insertion | 20 | 1 | 1/7 (14.3%) | |
| c.2582T>A (L861Q) | 21 | 1 | 1/7 (14.3%) | |
| c.2369C>T (T790M)/c.2573T>G (L858R) | 18 and 21 | 1 | 1/7 (14.3%) | |
| No. of disqualified analyses | - | 4 | 4/75 (5.3%) | - |
