N-MEG with their meta-analysis test result. Here, 20 N-MEG+ and 20 N-MEG- genes are tested. Each column corresponds to a specific gene, and each row to an experiment in the ONCOMINE test set. Test set of 65 experiments are classified into three major classes (PRG, STG, and GRD), each of which are subdivided into several minor classes. Blue color denotes up-regulation, and yellow color denotes down-regulation. Experiments with an asterisk (*) denote they used the expO database, and were excluded from further analyses. PRG=prognosis, MP=metastatic prognosis, RLP=relapse prognosis SVP=survival prognosis, STG=stage, M=M stage, N=N stage, G=stage grouping, T=T stage, GRD=tumor grade.