The node marker-panel is a collection of gene-pair classifiers from the nodes of the diagnostic hierarchy.

aNode # corresponds to numerical labels in the diagnostic hierarchy shown in Figure 1.
bDisease abbreviation (name): EPN (Ependymoma), GBM (Glioblastoma Multiforme), MDL (Medulloblastoma), MNG (Meningioma), OLG (Oligodendroglioma), PA (Pilocytic astrocytoma), and normal (Normal brain).
cGene i and gene j are the genes expressed higher and lower, respectively, within each gene-pair classification decision rule. Specifically, the statement of “Gene i is expressed higher than Gene j” being true contributes to the expression profile being classified as the phenotype(s) of the node. Gene names, chromosome loci, and Affymetrix microarray platform probe IDs of the classifier genes can be found in Table S1.
dThe minimum number of gene-pair classifiers whose decision rule outcomes for an expression profile are required to be ‘true ( = 1)’ for the profile to be classified as the phenotype(s) of the node.
eGenes that share same symbol/name, but correspond to different Affymetrix probe IDs.