SNHG4 and posterior cortical atrophy: We further analyzed the prognostic role of SNHG4 in prostate cancer, and survival analysis suggested that high SNHG4 expression was correlated with poor OS (HR = 6.64, p = 0.035, Fig. 4d) and PFI (HR = 2.09, p < 0.001, Figure S2h) in PCa patients.