FGFR2 and endometrial cancer: In our initial report of FGFR2 mutations in endometrial cancers we oversampled for cases that had recurred and tumors with microsatellite instability [18], which may explain in part the higher rate of mutations in that selected population, given the association of FGFR2 mutation with both defective DNA repair and recurrence in the current unselected cohort.