AZIN1 and astrocytoma (excluding glioblastoma): We conducted AZIN1 immunohistochemistry using tissue microarrays composed of 69 cases of MB, 38 cases of astrocytoma, 14 cases of glioblastoma, 6 cases of oligodendroglioma, 1 case of ependymoma, 31 controls (consists of 3 cases of cancer adjacent brain tissue and 28 normal brain tissues).