Table 1

Patient characteristics and their referral outcomes

Bethesda criterionNo of patientsTotalLynch syndrome screening with MSI/IHC assessmentReferred for germline genetic testing
ImperialOxford
Age <50 years381755155
Further colorectal cancer, or other cancer associated with Lynch syndrome1621844
Age <60 years, and histology suggestive of significant microsatellite instability25720
Lynch syndrome-associated tumour in 1 first degree relative <50 years10110
Lynch syndrome-associated tumour in 2 first- or second-degree relatives (any age)10100
  • IHC, immunohistochemistry; MSI, microsatellite instability.