With a few exceptions, NANOG is not expressed in adult human tissues (https://www.proteinatlas.org/ENSG00000111704-NANOG/tissue; http://gliovis.bioinfo.cnio.es/ NANOG in TCGA-GBM dataset)6,10, although it has been detected in basal cells of stratified epithelia in mice11. This evidence concerns the gene NANOG and glioblastoma.