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EGFR mutation patterns in 62 patients with exon 20 mutations
| Mutation type | Number (%) |
|---|---|
| S768I | |
| Single | 3 (30.00) |
| S768I + 19 delete | 3 (30.0) |
| S768I + L858R | 4 (40.0) |
| 20 insertion | |
| Single | 26 (89.7) |
| 20 insertion + 19 delete | 2 (6.9) |
| 20 insertion + L858R | 1 (3.4) |
| T790M | |
| Single | 5 (21.7) |
| T790M + 19 delete | 6 (26.1) |
| T790M + L858R | 10 (43.5) |
| T790M + G719X | 1 (4.3) |
| T790M + L861Q | 1 (4.3) |
Abbreviation: EGFR, epidermal growth factor receptor.
