GPC1 and glioblastoma: Of 28 antigens present in the axon guidance pathway, 9 (DPYSL2, UBB, MYH10, USP33, ANK3, SPTAN1, SH3GL2, ITSN1 and AP2M1) were overexpressed in healthy individuals, and 13 (GPC1, RPL36A, RPS9, RPS2, ROBO3, RPL27, MYL6, RPS15, RPS18, TUBA1A, RPL13, RPS21 and ACTG1) were overexpressed in GBM tissue.