Abstract
Objective: To explore the prognostic impact of 2016 World Health Organization (WHO) classification of central nervous system (CNS) tumors on patients with low grade gliomas (LGG). Methods: A total of 482 patients diagnosed with LGG in Beijing Tiantan Hospital affiliated to Capital Medical University from January 2009 to May 2016 were pathologically reclassified and retrospectively reviewed. In the survival analysis, Kaplan-Meier Plot was used to univariate analysis and Cox proportional hazards model was used to multivariate analysis. Results: According to the 2016 WHO CNS criterion, a total of 232 LGG were reclassified as O 1p/19q-deleted and IDH-mutant, 134 as A IDH-mutant and 116 as A IDH-wildtype. Univariate analysis showed that 2016 WHO CNS divided LGG into three subgroups with distinct survival (P<0.001). Multivariate analysis showed that both 2007 WHO CNS and 2016 WHO CNS were independent prognostic factors, but the Hazard ratio (HR) of 2016 WHO CNS was significantly higher than that of 2007 WHO CNS (P<0.01). Conclusions: 2016 WHO CNS classification criteria can divide LGG into three subgroups with significantly distinct survival, which has further improved the clinical prognostic value of it and fully reflected its advantages in predicting prognosis.
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