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| Mutation type | Cases (n) | Percent |
|---|---|---|
| Screened cases | 1,354 | |
| EGFR mutant cases | 171/1,354 | 12.6 |
| Activating mutations | 163/171 | 95.3 |
| Single mutation | ||
| E709K | 1 | 0.6 |
| G719C | 3 | 1.8 |
| Exon 19 del | 104 | 63.8 |
| L858R | 42 | 25.8 |
| L861Q | 6 | 3.7 |
| Concurrent mutations | ||
| G719A, L861Q | 1 | 0.6 |
| G719A, S768I | 1 | 0.6 |
| Exon 19 del, T790M | 1 | 0.6 |
| Exon 19 del, S768I | 1 | 0.6 |
| L858R, I744M | 1 | 0.6 |
| L858R, T790M | 1 | 0.6 |
| L858R, S768I | 1 | 0.6 |
| Exon 20 mutations | 8/171 | 4.8 |
| T790M | 1 | 0.6 |
| S768I | 1 | 0.6 |
| Ins exon 20 | 6 | 3.5 |
