Abstract:
:Ependymomas and astrocytomas commonly have allelic losses of chromosome 22q, which suggests the presence of a glioma tumor suppressor gene on 22q. A candidate tumor suppressor gene on 22q is the neurofibromatosis 2 (NF2) gene since NF2 patients have an increased susceptibility to ependymomas and astrocytomas. Using single strand conformation polymorphism analysis and direct DNA sequencing, we screened 8 ependymomas and 30 fibrillary astrocytomas from non-NF2 patients for mutations in the coding sequence and portions of the 3' untranslated region of the NF2 gene. Only one mutation was detected, a single base deletion in NF2 exon 7 from a spinal ependymoma, which had also lost the wild-type allele. These results suggest that the NF2 gene may be important in the formation of some ependymomas but the NF2 gene is probably not the critical chromosome 22q tumor suppressor gene involved in astrocytoma tumorigenesis.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Rubio MP,Correa KM,Ramesh V,MacCollin MM,Jacoby LB,von Deimling A,Gusella JF,Louis DNsubject
Has Abstractpub_date
1994-01-01 00:00:00pages
45-7issue
1eissn
0008-5472issn
1538-7445journal_volume
54pub_type
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