The BC patients with high expression of STEAP2 or STEAP3 had a long survival period, with the same hazard ratio (HR) = 0.69 (0.59-0.8) and different p value = 2.1e − 6 and 2e − 6, respectively (Figures 6(b) and 6(d)). Here, STEAP2 is linked to breast cancer.