Germline mutation of INI1/SMARCB1 in familial schwannomatosis.
Am J Hum Genet
; 80(4): 805-10, 2007 Apr.
Article
de En
| MEDLINE
| ID: mdl-17357086
ABSTRACT
Patients with schwannomatosis develop multiple schwannomas but no vestibular schwannomas diagnostic of neurofibromatosis type 2. We report an inactivating germline mutation in exon 1 of the tumor-suppressor gene INI1 in a father and daughter who both had schwannomatosis. Inactivation of the wild-type INI1 allele, by a second mutation in exon 5 or by clear loss, was found in two of four investigated schwannomas from these patients. All four schwannomas displayed complete loss of nuclear INI1 protein expression in part of the cells. Although the exact oncogenetic mechanism in these schwannomas remains to be elucidated, our findings suggest that INI1 is the predisposing gene in familial schwannomatosis.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Facteurs de transcription
/
Protéines chromosomiques nonhistones
/
Mutation germinale
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Prédisposition génétique à une maladie
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Protéines de liaison à l'ADN
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Neurinome
Limites:
Adult
/
Female
/
Humans
/
Male
Langue:
En
Journal:
Am J Hum Genet
Année:
2007
Type de document:
Article
Pays d'affiliation:
Pays-Bas