“…In recent years, clinical studies have demonstrated effectiveness of 5-FU on pediatric tumors, such as low-grade gliomas, nasopharyngeal carcinoma and hepatoblastoma (Casanova et al, 2012;Kupeli et al, 2006;Lee et al, 2006;Rodriguez-Galindo et al, 2005). The previous studies, including experimental and clinical reports, have suggested that 5-FU could result in oligodendrocytes (OLs) injury and reversible white-matter degeneration in adult patients (Cho et al, 2004;Fujimoto et al, 2006;Han et al, 2008;Ishibashi et al, 2004;Newton 2012;Sioka and Kyritsis, 2009).…”