Interestingly, a previous study identified among 79 glioblastomas with FGFR3::TACC3 fusion 11 cases that formed on t-SNE analysis a separate cluster (named ‘outlier’ FGFR3::TACC3 positive glioblastoma, GBM-F3T3-O) close to the cluster of GBM-mesenchymal subtype [35]. The gene discussed is FGFR3; the disease is glioblastoma.