Gendia (Antwerp, Belgium) offers the oncodiagnostics service for patient ctDNA screening over 50 genes, which includes several glioma-related genes, such as IDH1, IDH2, NOTCH1, PTEN, BRAF, EGFR, and TP53 (Plessers, 2023), but there is no description of the NGS platform used for gene sequencing. This evidence concerns the gene EGFR and central nervous system cancer.