Incidence of MSI, MMLH1 mtthylation and expression(frequency)
| Group | Sample No. | MSI | MSI-H | hMLHl methylation | Reduced hMLHl expression |
| Gastric cancer | 41 | 22 (53.7%) | 8(19.5%) | 17(41.5%) | 16(39.0%) |
| Normal control | 60 | 0 (0.0%) | 0 (0.0%) | 0 (0%) | 1 (1.7%) |
| P value | - | <0.05 | <0.05 | <0.05 | <0.05 |