A gene expression signature predicts recurrence-free survival in meningioma.

Unsupervised hierarchical clustering of these 393 probe sets separated 2 groups that showed a trend towards separating risk categories (Wilcoxon p=0.0479) (Figure 1A and 1B ); however only 5/18 recurrences were classified in the poor prognostic group (Group 1 in Figure 1 ).

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