Adult onset neurodegenerative disorder
Gene: GFAP
3 forms of Alexander disease are recognized, based on age of onset: infantile, juvenile, and adult. Younger patients typically present with seizures, megalencephaly, developmental delay, and spasticity. In older patients, bulbar or pseudobulbar symptoms predominate, frequently accompanied by spasticity. The disease is progressive, with most patients dying within 10 years of onset. At least 3 adult-onset cases reported. GreenCreated: 2 Sep 2019, 4:06 p.m. | Last Modified: 2 Sep 2019, 4:06 p.m.
Panel Version: 1.99
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
Autosomal Dominant Ataxia; Alexander disease
Adult onset reportedCreated: 23 Jul 2019, 3:35 p.m. | Last Modified: 23 Jul 2019, 3:35 p.m.
Panel Version: 1.72
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
Autosomal Dominant Ataxia; Alexander disease
Publications
Review and rating from Tracy Lester (Oxford Medical Genetics Laboratories Oxford University Hospitals NHS Foundation Trust) on behalf of Wessex and West Midlands GLH for GMS Neurology specialist test group. All the green and amber, except for the genes with triplet repeats, were reviewed.Created: 2 Sep 2019, 4:46 p.m. | Last Modified: 2 Sep 2019, 4:46 p.m.
Panel Version: 1.101
Review and rating submitted by Nick Beauchamp (Sheffield Diagnostic genetics Service), on behalf of Yorkshire and North East GLH for GMS Neurology specialist test group.Created: 23 Jul 2019, 3:51 p.m. | Last Modified: 23 Jul 2019, 3:51 p.m.
Panel Version: 1.74
Review and rating submitted byJames Polke (North Bristol NHS Trust), unless specified in the review comment, on behalf of London North GLH for GMS Neurology specialist test group.Created: 23 Apr 2019, 5:35 p.m.
Phenotypes for gene: GFAP were changed from Autosomal Dominant Ataxia; Alexander disease to Autosomal Dominant Ataxia; Alexander disease, OMIM:203450
Source Wessex and West Midlands GLH was added to GFAP.
Publications for gene GFAP were changed from to 26023202; 29095329
Source Yorkshire and North East GLH was added to GFAP.
Source NHS GMS was added to GFAP.
Source London North GLH was added to GFAP.
Louise Daugherty: Comment on phenotypes: amended
gene: GFAP was added gene: GFAP was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: GFAP was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Phenotypes for gene: GFAP were set to Autosomal Dominant Ataxia; Alexander disease