In addition, Casadio et al., reported that GSTP1 methylation is capable of significantly predicting nonmuscle‐invasive BC recurrence, its methylation frequencies were higher in nonrecurring than recurring tumors (26% vs. 5%) and were significantly indicative of a lack of recurrence at the 5‐year follow‐up (p = 0.02) (Casadio et al., 2013). The gene discussed is GSTP1; the disease is breast cancer.