Publications by authors named "Gert Wiegand"

Objective: There is currently scarce data on the electroclinical characteristics of epilepsy associated with synapsin 1 (SYN1) pathogenic variations. We examined clinical and electro-encephalographic (EEG) features in patients with epilepsy and SYN1 variants, with the aim of identifying a distinctive electroclinical pattern.

Methods: In this retrospective multicenter study, we collected and reviewed demographic, genetic, and epilepsy data of 19 male patients with SYN1 variants.

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  • Early diagnosis and treatment are crucial for improving outcomes in infants with spinal muscular atrophy (SMA), leading to the implementation of newborn screening programs, but there is a lack of robust data confirming their benefits.* -
  • This study compared SMA patients diagnosed through newborn screening to those diagnosed after symptoms appeared, using data from 234 children across Germany, Austria, and Switzerland from the SMARTCARE registry.* -
  • Results showed that infants identified through newborn screening started treatment significantly earlier (average 1.3 months) than those diagnosed by symptoms (average 10.7 months), leading to better motor milestones, such as higher rates of independent sitting and walking.*
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  • This study introduces 31 new individuals with 22 unique genetic variants related to SYN1 disorders, detailing the prevalence of symptoms like autism, epilepsy, and intellectual disability across these cases.
  • The research also identifies specific triggers for seizures, such as water contact and routine activities, and suggests that the type of genetic mutation can influence the severity of symptoms, particularly the relationship between early seizure onset and greater intellectual challenges.
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Aim: This prospective observational study evaluated the long-term EEG changes in children treated with everolimus (EVO) for refractory TSC-associated epilepsy. Changes in EEG-abnormalities were related to developmental outcomes.

Methods: Thirteen children treated with EVO were examined for EEG-recorded seizures and interictal epileptic discharges (IED) during a 72-hour-video-EEG-monitoring, which was performed at baseline and repeated at follow-up intervals of at least 9 months.

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Background: The development and approval of disease modifying treatments have dramatically changed disease progression in patients with spinal muscular atrophy (SMA). Nusinersen was approved in Europe in 2017 for the treatment of SMA patients irrespective of age and disease severity. Most data on therapeutic efficacy are available for the infantile-onset SMA.

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Background And Objective: The spectrum of myelin oligodendrocyte glycoprotein (MOG) antibody-associated disorder (MOGAD) comprises monophasic diseases such as acute disseminated encephalomyelitis (ADEM), optic neuritis (ON), and transverse myelitis and relapsing courses of these presentations. Persistently high MOG antibodies (MOG immunoglobulin G [IgG]) are found in patients with a relapsing disease course. Prognostic factors to determine the clinical course of children with a first MOGAD are still lacking.

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5q-associated spinal muscular atrophy is a rare neuromuscular disorder with the leading symptom of a proximal muscle weakness. Three different drugs have been approved by the European Medicines Agency and Food and Drug Administration for the treatment of spinal muscular atrophy patients, however, long-term experience is still scarce. In contrast to clinical trial data with restricted patient populations and short observation periods, we report here real-world evidence on a broad spectrum of patients with early-onset spinal muscular atrophy treated with nusinersen focusing on effects regarding motor milestones, and respiratory and bulbar insufficiency during the first years of treatment.

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Purpose: To investigate the efficacy and tolerability of long-term treatment with Everolimus (EVO) in patients with tuberous sclerosis complex (TSC) and therapy-resistant epilepsy in a compassionate use trial.

Methods: After a 3-month baseline, patients were treated with EVO. Treatment was divided into treatment phases each lasting at least 9 months.

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Objective: To describe the clinical and genetic findings in a cohort of individuals with bathing epilepsy, a rare form of reflex epilepsy.

Methods: We investigated by Sanger and targeted resequencing the gene in 12 individuals from 10 different families presenting with seizures triggered primarily by bathing or showering. An additional 12 individuals with hot-water epilepsy were also screened.

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In 2005, twork for herapy in are pilepsies (NETRE)-was initiated in order to share treatment experiences among clinicians in patients with rare epilepsies. Here we describe the structure of the rapidly growing NETRE and summarize some of the findings of the last 15 years. NETRE is organized in distinct groups (currently >270).

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  • 4H leukodystrophy is an autosomal recessive disorder linked to hypomyelination and several endocrine issues, caused by mutations in genes like POLR3A and POLR3B.
  • The study involved 150 patients and aimed to systematically assess their endocrine and growth abnormalities while exploring potential genotype/phenotype links.
  • Findings revealed that delayed puberty and short stature are common in these patients, highlighting a need for more thorough investigation of endocrine problems in this group.
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Background: Although multilobar resections correspond to one-fifth of pediatric epilepsy surgery, there are little data on long-term seizure control.

Objective: To investigate the long-term seizure outcomes of children and adolescents undergoing multilobar epilepsy surgery and identify their predictors.

Methods: In this retrospective study, we considered 69 consecutive patients that underwent multilobar epilepsy surgery at the age of 10.

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This prospective observational study focuses on developmental outcomes in the treatment of tuberous sclerosis complex (TSC) with everolimus (EVO). Fourteen children/adolescents aged 1.7-13.

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Background: Bilateral optic neuritis (bilON) is a rare clinical presentation often thought to be associated with relapsing disorders such as neuromyelitis optica spectrum disorders (NMOSD) or multiple sclerosis (MS).

Objective: To characterize the clinical, radiological phenotype and antibody status of children presenting with bilON.

Material And Methods: Retrospective multicenter study on children with bilON age <18 years with a first episode aquired demyelinating syndrome (ADS), cMRI, AQP4- and serum MOG-antibody status and follow-up data were collected.

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The natural history of patients with spinal muscular atrophy (SMA) has changed due to advances in standard care and development of targeted treatments. Nusinersen was the first drug approved for the treatment of all SMA patients. The transfer of clinical trial data into a real-life environment is challenging, especially regarding the advice of patients and families to what extent they can expect a benefit from the novel treatment.

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Purpose: Focal cortical dysplasia (FCD) is the major cause of focal intractable epilepsy in childhood. Here we analyze the factors influencing the success of surgical treatment in a large cohort of children with histologically ascertained FCD.

Method: A retrospective study of the effects of FCD type, surgical intervention, and age at surgery in a pediatric cohort.

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Background: Although the majority of children undergoing epilepsy surgery are younger than 3 yr at epilepsy manifestation, only few actually receive surgical treatment in early childhood. Past studies have, however, suggested that earlier intervention may correlate with superior developmental outcomes.

Objective: To identify predictors for long-term seizure freedom and cognitive development following epilepsy surgery in the first 3 yr of life and determine the appropriate timing for surgical treatment in this age group.

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Background: Although frontal lobe resections account for one-third of intralobar resections in pediatric epilepsy surgery, there is a dearth of information regarding long-term seizure freedom, overall cognitive and adaptive functioning.

Objective: To identify outcome predictors and define the appropriate timing for surgery.

Methods: We retrospectively analyzed the data of 75 consecutive patients aged 10.

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Objective: We aimed to investigate the long-term seizure outcome of children and adolescents who were undergoing epilepsy surgery in the parietooccipital cortex and determine their predictive factors.

Methods: We retrospectively analyzed the data of 50 consecutive patients aged 11.1 (mean) ± 5.

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Objective: Most studies on seizure detection systems focus more on the effectiveness of devices than on their practicability in and impact on everyday life. Our study investigated the impact of a technical monitoring system on subjective quality of sleep and the lives of affected families. Furthermore, we evaluated the impact of anxiety levels on seizure monitoring and vice versa.

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Objective: There is increasing awareness of neuronal autoantibodies and their impact on the pathogenesis of epilepsy. We investigated children with focal epilepsy in order to provide an estimate of autoantibody frequency within a pediatric population without prima facie evidence of encephalitis using a broad panel of autoantibodies. This was done to assess the specificity of antibodies and to see whether antibodies might be of modifying influence on the course of focal epilepsies.

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The discretization of the brain and the definition of the Laplacian matrix influence the results of methods based on spatial and spatio-temporal smoothness, since the Laplacian operator is used to define the smoothness based on the neighborhood of each grid point. In this paper, the results of low resolution electromagnetic tomography (LORETA) and the spatiotemporal Kalman filter (STKF) are computed using, first, a greymatter source space with the standard definition of the Laplacian matrix and, second, using a whole-brain source space and a modified definition of the Laplacian matrix. Electroencephalographic (EEG) source imaging results of five inter-ictal spikes from a pre-surgical patient with epilepsy are used to validate the two aforementioned approaches.

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The assumption of spatial-smoothness is often used to solve the bioelectric inverse problem during electroencephalographic (EEG) source imaging, e.g., in low resolution electromagnetic tomography (LORETA).

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Objective: Focal cortical dysplasia (FCD) is currently recognized as the most common cause of neocortical pharmacoresistant epilepsy. Epilepsy surgery has become an increasingly successful treatment option. Herein, the largest patient cohort reported to date is analyzed regarding long-term outcome and factors relevant for long-term seizure control.

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Background: Tuberous Sclerosis Complex (TSC) is an often severe neurodevelopmental disorder caused by overactivation of the mTOR pathway due to mutations in either the TSC1 or TSC2 genes. Seizures are the primary cause of neurologic morbidity and often refractory. The mTOR inhibitor everolimus was recently approved for the treatment of giant cell astrocytomas and renal angiomyolipomas in TSC.

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