Table 3.
Types of EGFR and KRAS mutations and frequency of VTE
| Mutation type | Number | VTE |
|---|---|---|
| (n = 306) (%) | (n = 32) (%) | |
| EGFR exon 18 mutation only | 3 (1.0) | 0 (0.0) |
| EGFR exon 19 deletion only | 106 (34.6) | 9 (28.1) |
| EGFR exon 20 T790 M only | 0 (0.0) | 0 (0.0) |
| EGFR exon 20 S768I only | 4 (1.3) | 0 (0.0) |
| EGFR exon 20 insertion only | 11 (3.6) | 0 (0.0) |
| EGFR exon 21 L858R only | 106 (34.6) | 12 (37.5) |
| EGFR exon 21 L861Q only | 7 (2.3) | 0 (0.0) |
| EGFR exon 18 + exon 21 L861Q | 1 (0.3) | 0 (0.0) |
| EGFR exon 18 + exon 20 S768I | 2 (0.6) | 1 (3.1) |
| EGFR exon 19 + exon 21 L861Q | 1 (0.3) | 0 (0.0) |
| EGFR exon 19 + exon 20 T790 M | 1 (0.3) | 0 (0.0) |
| EGFR exon 20 T790 M + exon 21 L858R | 1 (0.3) | 0 (0.0) |
| EGFR exon 20 S768I + exon 21 L858R | 1 (0.3) | 0 (0.0) |
| KRAS codon G12C(34G > T) only | 19 (6.2) | 5 (15.6) |
| KRAS codon G12S(34G > A) only | 2 (0.6) | 2 (6.3) |
| KRAS codon G12R(34G > C) only | 5 (1.6) | 0 (0.0) |
| KRAS codon G12 V(35G > T) only | 14 (4.6) | 3 (9.4) |
| KRAS codon G12D(35G > A) only | 12 (3.9) | 0 (0.0) |
| KRAS codon G12A(35G > C) only | 9 (2.9) | 0 (0.0) |
| KRAS codon G13D(38G > A) only | 0 (0.0) | 0 (0.0) |
| KRAS codon G12R(34G > C) + codon G12D(35G > A) | 1 (0.3) | 0 (0.0) |
Abbreviations: EGFR epidermal growth factor receptor, KRAS kitten rat sarcoma