Donadoni et al. (2018) found that mouse T antigen-overexpressing medulloblastoma cells had survival capacity, radiation resistance, a high colony formation, and a strong double-strand DNA break repair. Noch et al. (2012) demonstrated that T antigen promoted the expression of hexokinase 2 and the pentose phosphate enzyme, transaldolase-1 for glycolysis, and pentose catabolism in medulloblastoma cells. Ksiaa et al. (2010) found that JCV presence was correlated with the patient’s age and differentiation and abnormal methylation of tumor suppressor genes of gastric cancer. The gene discussed is HK2; the disease is neoplasm.