Protein biomarkersALDH1A3 in glioma-like stem cells in glioblastomaCSF protein profiling: N-myc oncoprotein, caldesmon, attractinReceptor protein tyrosine phosphataseSerum protein fingerprinting: circulating exosomes containing mRNA, miRNA, and angiogenic proteins. Here, CALD1 is linked to central nervous system cancer.