Based on the mRNA expression level of NBS1, we divided PCa patients with high expressions of BCAS2 into two groups: one with high levels of NBS1 and the other with low levels of NBS1. The survival analysis showed that only the PCa tissues with high mRNA levels of both BCAS2 and NBS1 (Supplementary Fig. S7b, left panel), but not those with high BCAS2 and low NBS1 mRNA levels (Supplementary Fig. S7b, right panel), were significantly associated with shorter patient survival (P = 0.0067) compared with those PCa tissues with low levels of BCAS2 mRNA. Here, BCAS2 is linked to posterior cortical atrophy.