Abstract:3-5% of CRCs show microsatellite instability (MSI) caused by germline defects in mismatch repair genes (MMR) predisposing to Lynch syndrome. In addition, 12% of sporadic CRCs show MSI. Currently, MSI is tested using a fragment analysis based assay not suitable for high throughput testing with suboptimal sensitivity and specificity. Knowledge of microsatellite instability affects prognosis (MSI is a positive prognostic factor in stage II CRC), risk stratification (for the affected and at risk relatives in Lynch… Show more
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