Dystonia as a prominent presenting feature in developmental and epileptic encephalopathies: A case series

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F21%3A10432332" target="_blank" >RIV/00216208:11110/21:10432332 - isvavai.cz</a>

Alternative codes found

RIV/00064165:_____/21:10432332

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fGBbHvve4a" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fGBbHvve4a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.parkreldis.2021.08.007" target="_blank" >10.1016/j.parkreldis.2021.08.007</a>

Result language

angličtina

Original language name

Dystonia as a prominent presenting feature in developmental and epileptic encephalopathies: A case series

Original language description

Introduction: Although there has been increasing recognition of the occurrence of non-epileptic involuntary movements in developmental and epileptic encephalopathies (DEEs), the spectrum of dystonic presentations associated with these conditions remains poorly described. We sought to expand the catalogue of dystonia-predominant phenotypes in monogenic DEEs, building on the recently introduced concept of an epilepsy-movement disorder spectrum. Methods: Cases were identified from a whole-exome-sequenced cohort of 45 pediatric index patients with complex dystonia (67% sequenced as parent-child trios). Review of molecular findings in DEE-associated genes was performed. For five individuals with identified DEE-causing variants, detailed information about presenting phenotypic features and the natural history of disease was obtained. Results: De-novo pathogenic and likely pathogenic missense variants in GABRA1, GABBR2, GNAO1, and FOXG1 gave rise to infantile-onset persistent and paroxysmal dystonic manifestations, beginning in the limb or truncal musculature and progressing gradually to a generalized state. Coexisting, less prominent movement-disorder symptoms were observed and included myoclonic, ballistic, and stereotypic abnormal movements as well as choreoathetosis. Dystonia dominated over epileptic neurodevelopmental comorbidities in all four subjects and represented the primary indication for molecular genetic analysis. We also report the unusual case of an adult female patient with dystonia, tremor, and mild learning disability who was found to harbor a pathogenic frameshift variant in MECP2. Conclusions: Dystonia can be a leading clinical manifestation in different DEEs. A monogenic basis of disease should be considered on the association of dystonia and developmental delay-epilepsy presentations, justifying a molecular screening for variants in DEE-associated genes.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30103 - Neurosciences (including psychophysiology)

Project

<a href="/en/project/NV19-04-00233" target="_blank" >NV19-04-00233: Clinical, Imaging and Biological predictors of effects associated with deep brain stimulation in Parkinson’s disease</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Parkinsonism and Related Disorders

ISSN

1353-8020

e-ISSN

—

Volume of the periodical

90

Issue of the periodical within the volume

September

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

73-78

UT code for WoS article

000697710200015

EID of the result in the Scopus database

2-s2.0-85112426722