The worldwide epilepsy treatment gap: A systematic review and recommendations for revised definitions – A report from the ILAE Epidemiology Commission

Abstract

Objective

In order to more appropriately apply and understand the “epilepsy treatment gap” (ETG) concept in current health systems, revised conceptual and operational definitions of ETG are timely and necessary. This article therefore systematically reviews worldwide studies of the ETG, distinguishing high-, middle-, and low-income regions, and provides recommendations for an updated International League Against Epilepsy (ILAE) definition of ETG.

Methods

A systematic review of the ETG was performed using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards. The search was ...

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Intracranial electroencephalographic biomarker predicts effective responsive neurostimulation for epilepsy prior to treatment

Abstract

Objective

Despite the overall success of responsive neurostimulation (RNS) therapy for drug-resistant focal epilepsy, clinical outcomes in individuals vary significantly and are hard to predict. Biomarkers that indicate the clinical efficacy of RNS—ideally before device implantation—are critically needed, but challenges include the intrinsic heterogeneity of the RNS patient population and variability in clinical management across epilepsy centers. The aim of this study is to use a multicenter dataset to evaluate a candidate biomarker from intracranial electroencephalographic (iEEG) recordings that predicts clinical ...

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Proposal for an updated seizure classification framework in clinical trials

Abstract

The International League Against Epilepsy (ILAE) seizure classification scheme has been periodically updated to improve its reliability and applicability to clinicians and researchers alike. Here, members of the Epilepsy Study Consortium propose a pragmatic seizure classification, based on the ILAE scheme, designed for use in clinical trials with a focus on outcome measures that have high reliability, broad interpretability across stakeholders, and clinical relevance in the context of the development of novel antiseizure medications. Controversies around the current ILAE classification ...

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The use of rodent models to better characterize the relationship among epilepsy, sleep, and memory

Abstract

Epilepsy, a neurological disorder characterized by recurrent seizures, is known to be associated with impaired sleep and memory. Although the specific mechanisms underlying these impairments are uncertain, the known role of sleep in memory consolidation suggests a potential relationship may exist between seizure activity, disrupted sleep, and memory impairment. A possible mediator in this relationship is the sleep spindle, the characteristic electroencephalographic (EEG) feature of non-rapid-eye-movement (NREM) sleep in humans and other mammals. Growing evidence supports the idea that sleep ...

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Systematic review of frequency of felt and enacted stigma in epilepsy and determining factors and attitudes toward persons living with epilepsy—Report from the International League Against Epilepsy Task Force on Stigma in Epilepsy

Abstract

Objective

To review the evidence of felt and enacted stigma and attitudes toward persons living with epilepsy, and their determining factors.

Methods

Thirteen databases were searched (1985–2019). Abstracts were reviewed in duplicate and data were independently extracted using a standardized form. Studies were characterized using descriptive analysis by whether they addressed “felt” or “enacted” stigma and “attitudes” toward persons living with epilepsy.

Results

Of 4234 abstracts, 132 met eligibility criteria and addressed either felt or enacted stigma and 210 attitudes toward epilepsy. Stigma frequency ranged ...

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Epilepsy‐related stigma and attitudes: Systematic review of screening instruments and interventions ‐ Report by the International League Against Epilepsy Task Force on Stigma in Epilepsy

Summary

Objective

This is a systematic review aimed at summarizing the evidence related to instruments that have been developed to measure stigma or attitudes toward epilepsy and on stigma-reducing interventions.

Methods

This review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards. A broad literature search (1985–2019) was performed in 13 databases. Articles were included if they described the development and testing of psychometric properties of an epilepsy-related stigma or attitude scale or stigma-reducing interventions. Two reviewers independently screened abstracts, reviewed ...

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Common functional connectivity alterations in focal epilepsies identified by machine learning

Abstract

Objective

This study was undertaken to identify shared functional network characteristics among focal epilepsies of different etiologies, to distinguish epilepsy patients from controls, and to lateralize seizure focus using functional connectivity (FC) measures derived from resting state functional magnetic resonance imaging (MRI).

Methods

Data were taken from 103 adult and 65 pediatric focal epilepsy patients (with or without lesion on MRI) and 109 controls across four epilepsy centers. We used three whole-brain FC measures: parcelwise connectivity matrix, mean FC, and degree of FC. ...

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Survey on the worldwide availability and affordability of antiseizure medications: Report of the ILAE Task Force on Access to Treatment

Summary

Health systems worldwide are challenged in the provision of basic medical services and access to treatments for chronic conditions. Epilepsy, the most common severe chronic neurological disorder, does not receive sufficient attention despite being officially declared a public health priority by the World Health Organization. More than 80% of people with epilepsy live in middle- and low-income countries (MICs and LICs, respectively), where most of the population lacks reliable access to antiseizure medications (ASMs), contributing significantly to the large epilepsy ...

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Deep brain stimulation targets in epilepsy: Systematic review and meta‐analysis of anterior and centromedian thalamic nuclei and hippocampus

Abstract

Deep brain stimulation (DBS) is a neuromodulatory treatment used in patients with drug-resistant epilepsy (DRE). The primary goal of this systematic review and meta-analysis is to describe recent advancements in the field of DBS for epilepsy, to compare the results of published trials, and to clarify the clinical utility of DBS in DRE. A systematic literature search was performed by two independent authors. Forty-four articles were included in the meta-analysis (23 for anterior thalamic nucleus [ANT], 8 for centromedian thalamic ...

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Pediatric Epilepsy Learning Healthcare System Quality of Life (PELHS‐QOL‐2): A novel health‐related quality of life prompt for children with epilepsy

Abstract

Objective

Pediatric epilepsy is often associated with diminished health-related quality of life (HRQOL). Our aim was to establish the validity of the Pediatric Epilepsy Learning Healthcare System Quality of Life (PELHS-QOL-2) questions, a novel two-item HRQOL prompt for children with epilepsy, primarily for use in clinical care.

Methods

We performed a multicenter cross-sectional study to validate the PELHS-QOL-2. Construct validity was established through bivariate comparisons with four comparator measures and known drivers of quality of life in children with epilepsy, as well as ...

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