p53 expression in four human medulloblastoma-derived cell lines.

Abstract excerpt

p53 is a tumor suppressor gene found on the short arm of chromosome 17. Loss of one p53 allele and alteration of the other is found in a variety of tumors, including highgrade glial tumors. Point mutations in the remaining allele occur in a highly conserved region of the gene encompassing exons 5-8. Although 40-50% of medulloblastomas lose sequences on the short arm of chromosome 17, alteration of p53 in these...

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