The advanced neoplasia detection rate (ANDR) was also higher in men at a f-Hb cut-off of 20 μg Hb/g faeces (44.0‰ [95% CI: 42.9–45.1]), with a significant difference with respect to women, for whom the ANDR was lower (15.9‰ [95% CI: 15.2–16.5]). Here, GSTM1 is linked to neoplasm.