The expression of DJ-1 was significantly higher in tumor samples compared to that in adjacent normal counterparts, both in total breast cancer and HR+ subtypes patients, respectively (Figures 1(a) and 1(b), P = 1.29 × 10−7 in total patients and P = 7.64 × 10−7 in HR+ subtype). This evidence concerns the gene PARK7 and neoplasm.