Fig. 1

A flow diagram of the study. IHC: immunohistochemistry; MMR: mismatch repair; MLH1: MutL homolog 1; PMS2: PMS1 homolog 2; MSH2: MutS homolog 2; MSH6: MutS homolog 6; MSI: microsatellite instability; MSI-H: high-frequency MSI; MSS: microsatellite stable