A comparison of GASCs from the GB peritumoral zone with control stromal cells derived from non-GB peripheral brain tissues, based on iTRAQ labeling and mass spectrometry, showed that GASCs overproduced several proteins involved in the promotion of tumor angiogenesis or in blood vessel development, including CSPG4/NG2, CRYAB, CNN1, CALD1, and VASP [23]. Here, CSPG4 is linked to neoplasm.