Severe early-onset axonal neuropathy with homozygous and compound heterozygous MFN2 mutations.
Neurology
; 70(19): 1678-81, 2008 May 06.
Article
em En
| MEDLINE
| ID: mdl-18458227
ABSTRACT
OBJECTIVE:
Severe early-onset axonal neuropathy (SEOAN) is a heterogeneous phenotype first delineated by Ouvrier et al., characterized by progressive axonal degeneration with gait problems often progressing to wheelchair requirement and later respiratory involvement. Most cases are sporadic single cases. Some have heterozygous mitofusin 2 (MFN2) mutations, many of which are de novo dominant mutations. The aim of this study was to investigate the mode of inheritance in three individuals with severe early-onset axonal neuropathy and homozygous or compound heterozygous MFN2 mutations.METHODS:
The clinical and molecular findings in the parents of three individuals with SEOAN with homozygous or compound heterozygous MFN2 mutations were examined.RESULTS:
All parents were asymptomatic or mildly symptomatic with some signs of peripheral neuropathy indicating a minimal phenotype. Two had hearing problems. All parents carried the relevant single base (heterozygous) MFN2 variations.CONCLUSION:
Severe early-onset axonal neuropathy due to MFN2 mutations can present as an apparently recessively inherited neuropathy but the minimal phenotype in the parents suggests a semi-dominant mechanism.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Axônios
/
Doenças do Sistema Nervoso Periférico
/
Predisposição Genética para Doença
/
Proteínas Mitocondriais
/
Heterozigoto
/
Homozigoto
/
Proteínas de Membrana
/
Mutação
Tipo de estudo:
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Neurology
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Austrália