Il13Rα2 receptor specific for astrocytoma cells had been previously investigated as a route to specific delivery of drugs to GB cells based on different types of nanocarriers conjugated with IL13 homing-peptide being a ligand for Il13Rα2 [23,61,62,63,64,65,66]. This evidence concerns the gene IL13RA2 and astrocytoma (excluding glioblastoma).