KPNA2 and teratoma: Furthermore, high expression of KPNA2 expressed significant association with a poor tumor grade (P = 0.031), an advanced FIGO stage (P = 0.025), recurrence and uncontrolled (P = 0.019), resistance/refraction to initial chemotherapy (P = 0.01), and SALL4 level (P = 0) in 38 immature teratoma patients (Table 3).