SCAF4 variants associated with focal epilepsy accompanied by multisystem disorders

SCAF4 is located at the chromosome locus 21q22.11, spans approximately 61kb of genomic DNA, and encodes serine/arginine-related carboxyl-terminal domain (CTD) -associated factor 4. Nine transcriptional variants have been described. Transcript 1 (NM_020706.2) consists of 20 exons, encoding 1147 amino acids, including a CTD-interacting domain (CID) and RNA-recognition motif (RRM) domain [1]. SCAF4 inhibits transcriptional reading [2]. Moreover, in combination with SCAF8, it inhibits the recognition of early alternative poly(A) sites, thereby preventing excessive production of nonfunctional truncated proteins [3].

Seguir leyendo →
0

Early recognition of characteristic conventional and amplitude-integrated EEG patterns of seizures in SCN2A and KCNQ3-related epilepsy in neonates

In neonates, most seizures are attributable to acquired non-genetic causes, including hypoxic-ischemic encephalopathy (HIE), vascular events or infectious diseases. A considerable subgroup, however, has a genetic basis. Many epilepsy-related genes encode ion channels, and epilepsies caused by pathogenic variants in this group are often referred to as channelopathies.[1–3] Many of the channelopathies-related epilepsies are associated with defects of voltage-gated sodium, potassium or calcium channels.

Seguir leyendo →
0

Acetazolamide responsive early-onset absence epilepsy and ataxia in a toddler with a KCNA2 genetic variant; a case report

Genetic variants in KCNA2 (potassium voltage-gated channel subfamily A member 2) have been associated with a spectrum of symptoms such as epileptic encephalopathy, myoclonic seizures, intellectual disability, and cerebellar ataxia [1,2]. Individuals with KCNA2 gain-of-function genetic variants could benefit from tailored-treatment regimens [1,3]. Here, we report a 2-year-old boy with early-onset drug refractory absence seizures and gait ataxia. The clinical exome sequencing revealed a gain-of-function genetic variant in the KCNA2 gene.

Seguir leyendo →
0

Psychiatric comorbidity in relation to clinical characteristics of epilepsy: A retrospective observational study

The epidemiological link between epilepsy and psychiatric disease is well established. Virtually all psychiatric disorders are more common in people with epilepsy than in those without. A recent review based on meta-analyses of population-based studies, affirms that people with epilepsy are burdened by a high prevalence of the major psychiatric disorders, including depression (23%), anxiety (20%) and psychosis (5-7%) [1].

Seguir leyendo →
0

Exome data of developmental and epileptic encephalopathy patients reveals de novo and inherited pathologic variants in epilepsy-associated genes

Developmental and epileptic encephalopathies (DEEs) comprise a group of rare neurodevelopmental disorders that are characterized by early-onset, frequent, refractory seizures associated with significant developmental delay or impairment in developmental skills [1]. Unfortunately, comorbidities are frequently associated with DEEs, including autism spectrum disorder, attention deficit hyperactivity disorder, and behavioral and movement disorders [2]. West Syndrome, Lennox- Gastaut syndrome, and Ohtahara syndrome are the most common types of DEEs which show almost specific distinct phenotypes, however, a considerable number of patients do ...

Seguir leyendo →
0

Epilepsy-related mortality during the COVID-19 pandemic: a nationwide study of routine Scottish data

Epilepsy contributes to a substantial proportion of the global burden of neurological disease, affecting 50–70 million people wordwide. [1,2] In the United Kingdom (UK) alone, seizures are the most common neurological cause of unscheduled hospital admissions. [3] People with epilepsy (PWE) are at significantly increased risk of premature death. [4–8] Some of those deaths may be entirely unrelated to their epilepsy, [5,9] for example in an assault or a pulmonary embolism. In such cases, the epilepsy is not mentioned anywhere ...

Seguir leyendo →
0

Epilepsy and Autism spectrum disorder caused by a pathogenic variant in TNRC6B

MicroRNAs (miRNAs) are small non-coding RNAs transcribed from independent miRNA genes that regulate gene expression in normal and pathological cellular processes. The TNRC6B gene (trinucleotide repeat containing 6 B, *610740) encodes a protein required to mediate translational inhibition by miRNA-guided mRNA cleavage [1]. This protein is associated with the Argonaute (Ago) family of proteins in the cytoplasm of the RNA-induced silencing complex (RISC), which leads to translational repression or mRNA degradation [1].

Seguir leyendo →
0

Early predictors of remission in children and adolescents with new-onset epilepsy: a prospective study

It is well established that despite the availability of numerous novel antiseizure medications (ASMs), one third of children with new-onset seizures will not achieve seizure remission [1–3]. These children endure the physical, psychological and social consequences of intractable seizures and face an elevated risk of death [4,5]. Despite its clinical importance, the early prediction of treatment outcome remains a major challenge [6], with only a limited number of large, community-based, long-term studies evaluating early predictors of medical refractoriness in childhood ...

Seguir leyendo →
0
Página 18 de 182 «...101617181920...»