4.2 Article

Genomic analysis of microphenotypes in epilepsy

期刊

AMERICAN JOURNAL OF MEDICAL GENETICS PART A
卷 188, 期 1, 页码 138-146

出版社

WILEY
DOI: 10.1002/ajmg.a.62505

关键词

genomics; Jeavons syndrome; microphenotype; pediatric status epilepticus

资金

  1. Fundacion Alfonso Martin Escudero [2018-2019]
  2. Epilepsy Research Fund
  3. Pediatric Epilepsy Research Foundation
  4. Epilepsy Foundation of America [EF-213583]

向作者/读者索取更多资源

Large international consortia focusing on the genomic architecture of epilepsy examine large diagnostic subgroupings, but there are also smaller phenotypic subgroupings with unique genomic risk factors. The genetic structure of several microphenotypes was examined, with reports on two interesting clinical phenotypes.
Large international consortia examining the genomic architecture of the epilepsies focus on large diagnostic subgroupings such as all focal epilepsy and all genetic generalized epilepsy. In addition, phenotypic data are generally entered into these large discovery databases in a unidirectional manner at one point in time only. However, there are many smaller phenotypic subgroupings in epilepsy, many of which may have unique genomic risk factors. Such a subgrouping or microphenotype may be defined as an uncommon or rare phenotype that is well recognized by epileptologists and the epilepsy community, and which may or may not be formally recognized within the International League Against Epilepsy classification system. Here we examine the genetic structure of a number of such microphenotypes and report in particular on two interesting clinical phenotypes, Jeavons syndrome and pediatric status epilepticus. Although no single gene reached exome-wide statistical significance to be associated with any of the diagnostic categories, we observe enrichment of rare damaging variants in established epilepsy genes among Landau-Kleffner patients (GRIN2A) and pediatric status epilepticus patients (MECP2, SCN1A, SCN2A, SCN8A).

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