Familial dominant epilepsy and mild pachygyria associated with a constitutional LIS1 mutation

Dalila De Vita, Davide Mei, Domenico Rutigliano, Niccolò Bartalucci, Claudia Maria Cinnante, Elena Parrini, Robertino Dilena, Renzo Guerrini

Research output: Contribution to journalArticlepeer-review

Abstract

We describe a mother and son with focal epilepsy, mild cognitive impairment, and pachygyria, which was parieto-occipital in the mother and with remarkable posterior greater than anterior severity in the son. Overall clinical manifestations, although overlapping in type, were likewise slightly more severe in the son. Using targeted resequencing through a gene panel for malformations of cortical development, we identified the c.655 T > A [p.(Trp219Arg)] novel missense variant in the LIS1 gene, segregating in the proband and in his mother. Western Blot analysis, qPCR gene expression and RT-PCR disclosed no significant differences between proband, his parents, and controls. Epilepsy and mild cognitive impairment can be the only clinical presentation of constitutional LIS1 mutations, which can therefore be inherited if the associated phenotype implies limited or no reproductive disadvantage. Parents of patients harboring LIS1 mutations should be assessed for their mutation carrier status.

Original languageEnglish
Pages (from-to)2808-2812
JournalAmerican Journal of Medical Genetics, Part A
Volume176
Issue number12
DOIs
Publication statusPublished - 2018

Keywords

  • epilepsy
  • LIS1
  • malformations of cortical development
  • pachygyria
  • PAFAH1B1

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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