Allelic status of 1p, 14q, and 22q and NF2 gene mutations in sporadic schwannomas.
Int J Mol Med
; 1(5): 889-92, 1998 May.
Article
en En
| MEDLINE
| ID: mdl-9852312
ABSTRACT
Schwannomas are common benign tumours of schwann cell origin, frequently found in patients with neurofibromatosis type 2 (NF2). Inactivation of the NF2 tumour suppressor gene appears to be a molecular event responsible for the development of up to 60% of cases, but no data are available on other superimposed secondary or alternative molecular abnormalities in those schwannomas lacking NF2 gene inactivation. We analysed 23 sporadic schwannomas for mutations in the NF2 gene and for the allelic status at 1p, 14q and 22q, as alterations of these genomic regions appear to be related to tumour progression in meningiomas, another NF2-associated neoplasm. Nine samples displayed allelic losses for markers on chromosome 22, and deletions at 1p were detected in two. No case showed losses for 14q. Three tumours displayed NF2 gene mutations, at exons 2, 7 and 12. Our results confirm that inactivation of the NF2 gene is a primary event in schwannoma development, and provide data suggesting that allelic loss at 1p may contribute to the pathogenesis of a small subgroup of this histological tumour type.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cromosomas Humanos Par 1
/
Cromosomas Humanos Par 14
/
Cromosomas Humanos Par 22
/
Genes de la Neurofibromatosis 2
/
Neurilemoma
Límite:
Humans
Idioma:
En
Revista:
Int J Mol Med
Asunto de la revista:
BIOLOGIA MOLECULAR
/
GENETICA MEDICA
Año:
1998
Tipo del documento:
Article
País de afiliación:
España