Frontal lobe epilepsy and mutations of the corticotropin-releasing hormone gene

Romina Combi, Leda Dalprà, Luigi Ferini-Strambi, Maria L. Tenchini

Research output: Contribution to journalArticle

Abstract

Nocturnal frontal lobe epilepsy up to now has been considered a channelopathy caused by mutations in the α4 and β2 subunits of the neuronal nicotinic acetylcholine receptor. However, these mutations account for only a minority of patients, and the existence of at least a new locus for the disease has been demonstrated. In one Italian nocturnal frontal lobe epilepsy family, we identified two new putative loci on chromosomes 3 and 8, where several candidate genes are mapped. In particular, on chromosome 8, corticotropin-releasing hormone gene (CRH) appears to be a good candidate. We therefore searched for CRH mutations in the proband. The study allowed the identification of a nucleotide variation in the promoter that was subsequently detected in all affected and obligate carrier members of the same family, in two sporadic cases, in all affected members of an additional compliant family, and in the proband of a noncompliant family. Moreover, a different mutation in the promoter was detected in a familial case. In vitro experiments showed altered levels of gene expression. CRH alterations could explain several autosomal dominant nocturnal frontal lobe epilepsy clinical features.

Original languageEnglish
Pages (from-to)899-904
Number of pages6
JournalAnnals of Neurology
Volume58
Issue number6
DOIs
Publication statusPublished - Dec 2005

ASJC Scopus subject areas

  • Neuroscience(all)

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