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Frequencies of phosphatidylinositol 3-kinase, catalytic, alpha polypeptide mutations detected in gastric cancer tissues
| Mutation | Overall frequency | Percent/total cases | Percent/mutated cases | Microsatellite instability | |
| Exon1 | R88Q | 1 | 0.4 | 5 | 1 |
| R108H | 4 | 1.7 | 20 | 1 | |
| Total | 5 | 2.2 | 2 | ||
| Exon9 | E542K | 5 | 2.2 | 25 | 1 |
| E545K | 2 | 0.9 | 10 | 1 | |
| E545G | 2 | 0.9 | 10 | 1 | |
| Total | 9 | 4.0 | 3 | ||
| Exon20 | H1047Y | 1 | 0.4 | 5 | 1 |
| H1047R | 6 | 2.6 | 30 | 4 | |
| Total | 7 | 3.0 | 5 |
