Gene alterations | Exon | Nucleotide substitution | Codon Substitution | Number (n = 149) | Percentage (%) |
KRAS | 2 | c.35G > A | G12D | 47 | 31.5 |
2 | c.35G > T | G12V | 40 | 26.8 | |
2 | c.38G > A | G13D | 20 | 19.5 | |
2 | c.34G > T | G12C | 10 | 6.7 | |
2 | c.35G > C | G12 A | 9 | 6.04 | |
2 | c.34G > A | G12S | 3 | 2.01 | |
2 | c.37G > T | G13C | 1 | 0.7 | |
3 | c.175G > A | p.A59T | 1 | 0.7 | |
3 | c.182A > T | p.Q61L | 1 | 0.7 | |
4 | c.436G > A | p.A146T | 3 | 2.01 | |
4 | c.437C > T | p.A146V | 1 | 0.7 | |
4 | c.351A > T | p.117A | 2 | 1.3 | |
NRAS | 3 | c.181C > A | p.Q61K | 4 | 2.7 |
3 | c.181A > G | p.Q61R | 2 | 1.3 | |
3 | c.183A > C | p.Q61H | 1 | 0.7 | |
2 | c.35G > A | p.G12D | 2 | 1.3 | |
3 | c.182A > G | Glu61Arg | 2 | 1.3 |