RAB25 and posterior cortical atrophy: Moreover, univariate analyses found that overall survival and biochemical recurrence-free survival of PCa patients were both significantly associated with clinical stage (both P < 0.001), Gleason score (both P = 0.01), status of metastasis (both P = 0.006) and Rab25 expression (P = 0.01 and 0.02, respectively).