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Familial focal epilepsy with variable foci mapped to chromosome 22q12: Expansion of the phenotypic spectrum
journal contribution
posted on 2023-05-17, 15:23 authored by Klein, KM, O'Brien, TJ, Praveen, K, Heron, SE, Mulley, JC, Simon James FooteSimon James Foote, Berkovic, SF, Scheffer, IEWe aimed to refine the phenotypic spectrum and map the causative gene in two families with familial focal epilepsy with variable foci (FFEVF). A new five-generation Australian FFEVF family (A) underwent electroclinical phenotyping, and the original four-generation Australian FFEVF family (B) (Ann Neurol, 44, 1998, 890) was re-analyzed, including new affected individuals. Mapping studies examined segregation at the chromosome 22q12 FFEVF region. In family B, the original whole genome microsatellite data was reviewed. Five subjects in family A and 10 in family B had FFEVF with predominantly awake attacks and active EEG studies with a different phenotypic picture from other families. In family B, reanalysis excluded the tentative 2q locus reported. Both families mapped to chromosome 22q12. Our results confirm chromosome 22q12 as the solitary locus for FFEVF. Both families show a subtly different phenotype to other published families extending the clinical spectrum of FFEVF.
History
Publication title
EpilepsiaVolume
53Issue
8Pagination
e151-e155ISSN
0013-9580Department/School
Menzies Institute for Medical ResearchPublisher
Blackwell Publishing IncPlace of publication
350 Main St, Malden, USA, Ma, 02148Rights statement
Copyright 2012 International League Against EpilepsyRepository Status
- Restricted