However, expression of SOX11, a TF crucial for brain development that is also overexpressed in GBM,[48] appeared to be localized to the core of the PRO eGBO‐derived tumor, while the MES eGBO‐derived tumor broadly expressed ERBB3, a subtype‐specific GBM marker.[49] Notably, we observed a similar spatial expression pattern for all of these markers in a patient GBM sample. This evidence concerns the gene ERBB3 and glioblastoma.