The aim of the present study is to clarify the significance of ATRX loss and its correlation with p53 overexpression, IDH1/2 mutations, 1p/19q-codeletion and MGMT hypermethylation in supertentorial astrocytoma, and to determine the prognostic value of these factors in Chinese patients.
MGMT activity, promoter methylation and immunohistochemistry of pretreatment and recurrent malignant gliomas: a comparative study on astrocytoma and glioblastoma.
The promoters of the RASSF1A (3p21.3), BLU (3p21.3) and MGMT (10q26) genes were analyzed by MCA-MSP and MCA-Meth in 13 astrocytoma samples, 6 high grade glioma cell lines and 4 neuroblastoma cell lines.
Our findings suggest that p14(ARF) hypermethylation and MGMT hypermethylation constitute distinct molecular pathways of astrocytoma progression, which could differ in biological behavior and clinical outcome.