lunes, 25 de enero de 2016

Screening LGI1 in a cohort of 26 lateral temporal lobe epilepsy patients with auditory aura from Turkey detects a novel de novo mutation. - PubMed - NCBI

2015 Dec 12;120:73-78. doi: 10.1016/j.eplepsyres.2015.12.006. [Epub ahead of print]

Screening LGI1 in a cohort of 26 lateral temporal lobe epilepsy patients with auditory aura from Turkey detects a novel de novo mutation.

Kesim YF1, Uzun GA2, Yucesan E1, Tuncer FN1, Ozdemir O1, Bebek N2, Ozbek U1, Iseri SA3, Baykan B2.

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Abstract

Autosomal dominant lateral temporal lobe epilepsy (ADLTE) is an autosomal dominant epileptic syndrome characterized by focal seizures with auditory or aphasic symptoms. The same phenotype is also observed in a sporadic form of lateral temporal lobe epilepsy (LTLE), namely idiopathic partial epilepsy with auditory features (IPEAF). Heterozygous mutations in LGI1 account for up to 50% of ADLTE families and only rarely observed in IPEAF cases. In this study, we analysed a cohort of 26 individuals with LTLE diagnosed according to the following criteria: focal epilepsy with auditory aura and absence of cerebral lesions on brain MRI. All patients underwent clinical, neuroradiological and electroencephalography examinations and afterwards they were screened for mutations in LGI1 gene. The single LGI1 mutation identified in this study is a novel missense variant (NM_005097.2: c.1013T>C; p.Phe338Ser) observed de novo in a sporadic patient. This is the first study involving clinical analysis of a LTLE cohort from Turkey and genetic contribution of LGI1 to ADLTE phenotype. Identification of rare LGI1 gene mutations in sporadic cases supports diagnosis as ADTLE and draws attention to potential familial clustering of ADTLE in suggestive generations, which is especially important for genetic counselling.

KEYWORDS:

Auditory aura; Autosomal Dominant Lateral Temporal Epilepsy (ADLTE); De novo Mutation; Idiopathic Partial Epilepsy with Auditory Features (IPEAF); LGI1; Lateral temporal lobe epilepsy (LTLE)