Cited by 513Fetal and Pediatric Neurological DisordersEpilepsy research and treatmentGenetics and Neurodevelopmental Disorders

Malformations of cortical development: clinical features and genetic causes

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Guerrini, Renzo, Dobyns, William B·2014·The Lancet Neurology

Abstract

Malformations of cortical development are common causes of developmental delay and epilepsy. Some patients have early, severe neurological impairment, but others have epilepsy or unexpected deficits that are detectable only by screening. The rapid evolution of molecular biology, genetics, and imaging has resulted in a substantial increase in knowledge about the development of the cerebral cortex and the number and types of malformations reported. Genetic studies have identified several genes that might disrupt each of the main stages of cell proliferation and specification, neuronal migration, and late cortical organisation. Many of these malformations are caused by de-novo dominant or X-linked mutations occurring in sporadic cases. Genetic testing needs accurate assessment of imaging features, and familial distribution, if any, and can be straightforward in some disorders but requires a complex diagnostic algorithm in others. Because of substantial genotypic and phenotypic heterogeneity for most of these genes, a comprehensive analysis of clinical, imaging, and genetic data is needed to properly define these disorders. Exome sequencing and high-field MRI are rapidly modifying the classification of these disorders.

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Crossref · 10.1016/s1474-4422(14)70040-7

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  • Genetic DEEs may cause structural changes, such as MCDs, reinforcing that a genetic aetiology should be sought for MCDs which are often associated with a DEE.

    “Taken together, genetic DEEs may cause structural changes, such as MCDs, reinforcing that a genetic aetiology should be sought for MCDs which are often associated with a DEE 40,41 .”

    From Developmental and epileptic encephalopathies (2024) · cites this paper as [40]

    The Introduction’s “Genes, biological pathways, and mosaicism” section reports many genes associated with MCD, and the “Clinical features” section says dysplastic megalencephaly can include epileptic encephalopathies. These passages support seeking a genetic aetiology for MCD, but they do not establish that a genetic developmental and epileptic encephalopathy itself causes the structural malformation; they describe genetic causes of MCD alongside its clinical features. No page numbers were provided in our copy. (LLM, conf=0.84)

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Authors
Guerrini, R., & Dobyns, W. B.
Affiliations
  • Meyer Children's Hospital (IT)
  • University of Washington (US)
Venue
The Lancet Neurology
Publisher
Elsevier BV
Published
2014-07
Volume
13
Issue
7
Pages
710-726
ISSN
1474-4422 (ISSN-L)
OpenAlex
W2095969890
Cited by
513
References
161
Citations by year
2026: 29 · 2025: 37 · 2024: 47 · 2023: 35 · 2022: 43 · 2021: 59 · 2020: 75 · 2019: 43 · 2018: 34 · 2017: 43 · 2016: 28 · 2015: 31 · 2014: 5
FWCI
5.30
Type
journal article
Language
en
Open access
Locations
  • The Lancet Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Florence Research (University of Florence) (submittedVersion)
Funders
  • European Union Seventh Framework Programme (FP7/2007–2013)
  • DESIRE (grant agreement number 602531)
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
malformations of cortical development, developmental delay, epilepsy, cortical development, neuronal migration, de novo mutations, X-linked mutations, genetic testing, phenotypic heterogeneity, exome sequencing, high-field MRI
MeSH terms
Animals, Cerebral Cortex, Developmental Disabilities, Diagnostic Imaging, Genetic Testing, Humans, Mutation, Cell Proliferation, Malformations of Cortical Development

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