According to a univariate analysis, the predictive factors for bladder recurrence were age (P = 0.042), sex (P = 0.014), tumor location (P = 0.007), tumor side (P = 0.046), tumor multiplicity (P = 0.001), tumor stage (0.039) and KPNA2 expression (P = 0.001). Here, KPNA2 is linked to neoplasm.