POU5F1 and neoplasm: Studying each prognostic factor independently, we found that the tumours of patients with ≥18 months, metastatic stage, NB or nodular GNB categories, undifferentiated neuroblasts and with presence of SCA, MNA or 11q deletion had a significant relationship (p < 0.05) with a greater proportion of high Oct4+ cell percentage cases (Table 1).