Pub Date : 2025-12-02DOI: 10.1016/j.seizure.2025.12.002
Rui Li , Chu Wang , Runlu Geng , Xiaoqing Xu , Yichen Tao , Yuanyuan Dai
Objective
To analyse the clinical and genetic characteristics of children with epilepsy associated with SCN8A gene variants.
Methods
High-throughput whole-exome sequencing was performed on children suspected of having gene variant-related epilepsy. A total of 14 children with seizures caused by SCN8A gene variants were identified. A retrospective analysis was conducted to collect and summarise the medical records and genetic results of these children.
Results
Eleven cases were identified with de novo variants and three with inherited heterozygous variants. The earliest age of onset was 10 min after birth, and the maximum age of onset was 2 years. Three patients were treated with a single drug, four were treated with two anti-seizure medicines (ASMs), seven were treated with three or more ASMs and two were treated with a ketogenic diet, but the efficacy was not satisfactory. Eight patients responded to sodium channel blockers, with doses ranging from higher than the standard paediatric dosage. Except for one case with a normal electroencephalogram, all others showed abnormalities, mainly characterised by multifocal and widespread discharges.
Conclusion
Typically, SCN8A gene variants cause early-onset childhood epilepsy, often within the first year of life, even in the neonatal period, and most cases are caused by de novo variants. Sodium channel blockers show some efficacy, but often require higher doses, and single-drug therapy is usually insufficient. The clinical phenotype of de novo variants is severe, with frequent seizures. Most patients still experience seizures despite treatment with 3–4 drugs, and focal or focal secondary generalised seizures are common. Seizure types such as spasms and myoclonus are rare.
{"title":"Clinical and genetic analysis of epilepsy in children with SCN8A gene variants","authors":"Rui Li , Chu Wang , Runlu Geng , Xiaoqing Xu , Yichen Tao , Yuanyuan Dai","doi":"10.1016/j.seizure.2025.12.002","DOIUrl":"10.1016/j.seizure.2025.12.002","url":null,"abstract":"<div><h3>Objective</h3><div>To analyse the clinical and genetic characteristics of children with epilepsy associated with SCN8A gene variants.</div></div><div><h3>Methods</h3><div>High-throughput whole-exome sequencing was performed on children suspected of having gene variant-related epilepsy. A total of 14 children with seizures caused by SCN8A gene variants were identified. A retrospective analysis was conducted to collect and summarise the medical records and genetic results of these children.</div></div><div><h3>Results</h3><div>Eleven cases were identified with de novo variants and three with inherited heterozygous variants. The earliest age of onset was 10 min after birth, and the maximum age of onset was 2 years. Three patients were treated with a single drug, four were treated with two anti-seizure medicines (ASMs), seven were treated with three or more ASMs and two were treated with a ketogenic diet, but the efficacy was not satisfactory. Eight patients responded to sodium channel blockers, with doses ranging from higher than the standard paediatric dosage. Except for one case with a normal electroencephalogram, all others showed abnormalities, mainly characterised by multifocal and widespread discharges.</div></div><div><h3>Conclusion</h3><div>Typically, SCN8A gene variants cause early-onset childhood epilepsy, often within the first year of life, even in the neonatal period, and most cases are caused by de novo variants. Sodium channel blockers show some efficacy, but often require higher doses, and single-drug therapy is usually insufficient. The clinical phenotype of de novo variants is severe, with frequent seizures. Most patients still experience seizures despite treatment with 3–4 drugs, and focal or focal secondary generalised seizures are common. Seizure types such as spasms and myoclonus are rare.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 147-151"},"PeriodicalIF":2.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145745627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-30DOI: 10.1016/j.seizure.2025.11.021
Meizhuang Zhou , Yu Luo , Ruihan Yang , Liting Zhang , Weili Hao , Dezhi Cao , Zhigang Liu , Qing Zhou , Xiaorong Liu , Bingmei Li , Peng Zhou , Bin Li , Xingwang Song
Background
The PIGA gene plays a critical role in glycosylphosphatidylinositol (GPI) biosynthesis. PIGA variants have been linked to multiple congenital anomalies-hypotonia-seizures syndrome 2. While epilepsy is a common manifestation and patients usually show developmental delay, it is unclear whether PIGA variants are associated with pure epilepsy.
Method
Trio-based whole-exome sequencing was performed on individuals with focal epilepsy from the China Epilepsy Gene 1.0 project. The sub-molecular effect, damaging effect of the variants, and spatial-temporal expression of PIGA were analyzed to explore its role in epilepsy.
Results
Six PIGA variants were identified in seven unrelated cases with focal epilepsy. In one family, the variant co-segregated with two affected males. All the variants were inherited from the asymptomatic mothers, consistent with an X-linked recessive inheritance pattern. Five of the variants were absent in the general population and one variant had extremely low frequencies. These variants were predicted to be damaging by commonly used in silico tools. Four cases presented with developmental delay and three showed normal development. Further analysis revealed that variants associated with a severe phenotype were located within the GPI biosynthesis domain, whereas variants associated with focal epilepsy and a favorable outcome were outside functional domains, suggesting a sub-molecular effect. Patients with more severe phenotype also had variants with higher damaging scores, indicating a potential genotype-phenotype correlation. PIGA was highly expressed at the embryoid stage, decreased after birth, and then increased again during infancy and the juvenile stage, consistent with the onset age of the patients.
Conclusion
PIGA variants are potentially associated with focal epilepsy with favorable outcome. The sub-molecular effect helps explain phenotype variations.
{"title":"PIGA variants are associated with focal epilepsy with favorable outcome and the sub-molecular effect","authors":"Meizhuang Zhou , Yu Luo , Ruihan Yang , Liting Zhang , Weili Hao , Dezhi Cao , Zhigang Liu , Qing Zhou , Xiaorong Liu , Bingmei Li , Peng Zhou , Bin Li , Xingwang Song","doi":"10.1016/j.seizure.2025.11.021","DOIUrl":"10.1016/j.seizure.2025.11.021","url":null,"abstract":"<div><h3>Background</h3><div>The <em>PIGA</em> gene plays a critical role in glycosylphosphatidylinositol (GPI) biosynthesis. <em>PIGA</em> variants have been linked to multiple congenital anomalies-hypotonia-seizures syndrome 2. While epilepsy is a common manifestation and patients usually show developmental delay, it is unclear whether <em>PIGA</em> variants are associated with pure epilepsy.</div></div><div><h3>Method</h3><div>Trio-based whole-exome sequencing was performed on individuals with focal epilepsy from the China Epilepsy Gene 1.0 project. The sub-molecular effect, damaging effect of the variants, and spatial-temporal expression of <em>PIGA</em> were analyzed to explore its role in epilepsy.</div></div><div><h3>Results</h3><div>Six <em>PIGA</em> variants were identified in seven unrelated cases with focal epilepsy. In one family, the variant co-segregated with two affected males. All the variants were inherited from the asymptomatic mothers, consistent with an X-linked recessive inheritance pattern. Five of the variants were absent in the general population and one variant had extremely low frequencies. These variants were predicted to be damaging by commonly used <em>in silico</em> tools. Four cases presented with developmental delay and three showed normal development. Further analysis revealed that variants associated with a severe phenotype were located within the GPI biosynthesis domain, whereas variants associated with focal epilepsy and a favorable outcome were outside functional domains, suggesting a sub-molecular effect. Patients with more severe phenotype also had variants with higher damaging scores, indicating a potential genotype-phenotype correlation. <em>PIGA</em> was highly expressed at the embryoid stage, decreased after birth, and then increased again during infancy and the juvenile stage, consistent with the onset age of the patients.</div></div><div><h3>Conclusion</h3><div><em>PIGA</em> variants are potentially associated with focal epilepsy with favorable outcome. The sub-molecular effect helps explain phenotype variations.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 139-146"},"PeriodicalIF":2.8,"publicationDate":"2025-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145696408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-28DOI: 10.1016/j.seizure.2025.11.019
Sumitha Murugesu, Ahmad Rithauddin Mohamed, Husna Binti Musa, Jun Xiong Lee, Muhamad Azamin Anuar, Teik Beng Khoo
Purpose
Febrile infection-related epilepsy syndrome (FIRES) is a catastrophic epileptic encephalopathy that can occur at any age, with limited treatment options. Conventional immunotherapies often show poor efficacy. We evaluated the effectiveness and safety of the interleukin-6 receptor blocker, tocilizumab, in children with FIRES.
Methods
We retrospectively reviewed medical records, electroencephalography, and neuroimaging of seven children with FIRES treated at our center between 2018 and 2022. Outcomes included cessation of super-refractory status epilepticus (SRSE), seizure burden, and functional outcome using the Pediatric Cerebral Performance Category (PCPC) scale.
Results
Seven previously healthy children (median age 9 years; range 2–13) developed SRSE following febrile illness. Extensive investigations, including cerebrospinal fluid studies, viral panels, and autoimmune testing were negative, consistent with cryptogenic FIRES. Initial MRI was normal in six children; one showed symmetrical T2/FLAIR hyperintensities involving deep grey matter structures. All patients received a multimodal therapeutic strategy including intravenous midazolam, high-dose phenobarbitone, ketogenic diet, therapeutic hypothermia, and/or immunotherapy—prior to tocilizumab. Intravenous tocilizumab was initiated at a median of 17 days from illness onset (range 6–46). SRSE resolved within a median of 5 days (range 2–12) after administration. At 6-month follow-up, six of seven patients developed chronic epilepsy, characterised by weekly to monthly seizures, while one remained seizure free. Functional recovery was noted in four patients, each achieving a Pediatric Cerebral Performance Category (PCPC) score of ≤2. Adverse events included grade 2 leukopenia or diarrhoea (n = 3) and grade 4 sepsis (n = 1); all resolved with treatment. No deaths occurred.
Conclusion
Tocilizumab was associated with rapid resolution of SRSE, seizure reduction, and functional recovery in children with FIRES, with manageable side effects. While causality cannot be confirmed given concurrent therapies and variable timing of administration, these findings support consideration of interleukin-6 blockade as a potential adjunctive treatment in FIRES.
{"title":"Tocilizumab for super-refractory status epilepticus in children with FIRES: A case series","authors":"Sumitha Murugesu, Ahmad Rithauddin Mohamed, Husna Binti Musa, Jun Xiong Lee, Muhamad Azamin Anuar, Teik Beng Khoo","doi":"10.1016/j.seizure.2025.11.019","DOIUrl":"10.1016/j.seizure.2025.11.019","url":null,"abstract":"<div><h3>Purpose</h3><div>Febrile infection-related epilepsy syndrome (FIRES) is a catastrophic epileptic encephalopathy that can occur at any age, with limited treatment options. Conventional immunotherapies often show poor efficacy. We evaluated the effectiveness and safety of the interleukin-6 receptor blocker, tocilizumab, in children with FIRES.</div></div><div><h3>Methods</h3><div>We retrospectively reviewed medical records, electroencephalography, and neuroimaging of seven children with FIRES treated at our center between 2018 and 2022. Outcomes included cessation of super-refractory status epilepticus (SRSE), seizure burden, and functional outcome using the Pediatric Cerebral Performance Category (PCPC) scale.</div></div><div><h3>Results</h3><div>Seven previously healthy children (median age 9 years; range 2–13) developed SRSE following febrile illness. Extensive investigations, including cerebrospinal fluid studies, viral panels, and autoimmune testing were negative, consistent with cryptogenic FIRES<strong>.</strong> Initial MRI was normal in six children; one showed symmetrical T2/FLAIR hyperintensities involving deep grey matter structures. All patients received a multimodal therapeutic strategy including intravenous midazolam, high-dose phenobarbitone, ketogenic diet, therapeutic hypothermia, and/or immunotherapy—prior to tocilizumab. Intravenous tocilizumab was initiated at a median of 17 days from illness onset (range 6–46). SRSE resolved within a median of 5 days (range 2–12) after administration. At 6-month follow-up, six of seven patients developed chronic epilepsy, characterised by weekly to monthly seizures, while one remained seizure free. Functional recovery was noted in four patients, each achieving a Pediatric Cerebral Performance Category (PCPC) score of ≤2. Adverse events included grade 2 leukopenia or diarrhoea (<em>n</em> = 3) and grade 4 sepsis (<em>n</em> = 1); all resolved with treatment. No deaths occurred.</div></div><div><h3>Conclusion</h3><div>Tocilizumab was associated with rapid resolution of SRSE, seizure reduction, and functional recovery in children with FIRES, with manageable side effects. While causality cannot be confirmed given concurrent therapies and variable timing of administration, these findings support consideration of interleukin-6 blockade as a potential adjunctive treatment in FIRES.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 180-185"},"PeriodicalIF":2.8,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145769672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-28DOI: 10.1016/j.seizure.2025.11.020
Yingfan Wang , Minghao Li , Xu Huang , Peilin Jiang, Xinyi Zhou, Ke Hu, Xiaoshan Wang
Objectives
Childhood Absence Epilepsy (CAE) and Self-Limited Epilepsy with Centrotemporal Spikes (SeLECTS) are common, clinically associated syndromes, yet their shared and distinct pathophysiological mechanisms remain unclear. This study aimed to systematically compare interictal resting-state neuromagnetic networks among drug-naive children with CAE, SeLECTS, and healthy controls (HC) to identify common and syndrome-specific neurophysiological signatures.
Methods
We recruited 51 drug-naive CAE patients, 50 SeLECTS patients, and 30 age- and sex-matched HC. We analyzed 30-second epochs of interictal epileptiform discharge (IED)-free resting-state magnetoencephalography (MEG) data. Source-level spectral power and functional connectivity (corrected amplitude envelope correlation, AEC-c) were computed across six frequency bands (delta to high-gamma). Group differences were assessed using Network-Based Statistics (NBS) and cluster-based permutation test.
Results
Both epilepsy groups, compared to HCs, exhibited a shared pattern of pathological brain 'slowing': significantly increased low-frequency (delta) power and decreased high-frequency (alpha, beta, gamma) power. At the network level, this was mirrored by alpha-band hyperconnectivity and gamma-band hypoconnectivity. Crucially, syndrome-specific patterns emerged. CAE was characterized by global network dysregulation, with widespread delta/theta hyperconnectivity and a profound reduction in parieto-occipital alpha power. In contrast, SeLECTS displayed features of focal origin with widespread impact, including extreme low-to-mid frequency (delta-to-alpha) hyperconnectivity across distinct subnetworks and a widespread decrease in high-frequency (beta to gamma) power, most prominent in the temporal lobes.
Significance
This study provides the first direct neuromagnetic comparison of drug-naive CAE and SeLECTS. While a shared signature of pathological brain slowing suggests a common substrate of network instability, their distinct patterns of network dysfunction—global dysregulation in CAE versus focal-origin hyperconnectivity and widespread high-frequency power collapse in SeLECTS—elucidate divergent pathophysiological mechanisms. These syndrome-specific neuromagnetic features hold potential as non-invasive biomarkers for differential diagnosis and therapeutic monitoring.
{"title":"Shared and divergent neuromagnetic network signatures in childhood absence epilepsy and self-limited epilepsy with centrotemporal spikes","authors":"Yingfan Wang , Minghao Li , Xu Huang , Peilin Jiang, Xinyi Zhou, Ke Hu, Xiaoshan Wang","doi":"10.1016/j.seizure.2025.11.020","DOIUrl":"10.1016/j.seizure.2025.11.020","url":null,"abstract":"<div><h3>Objectives</h3><div>Childhood Absence Epilepsy (CAE) and Self-Limited Epilepsy with Centrotemporal Spikes (SeLECTS) are common, clinically associated syndromes, yet their shared and distinct pathophysiological mechanisms remain unclear. This study aimed to systematically compare interictal resting-state neuromagnetic networks among drug-naive children with CAE, SeLECTS, and healthy controls (HC) to identify common and syndrome-specific neurophysiological signatures.</div></div><div><h3>Methods</h3><div>We recruited 51 drug-naive CAE patients, 50 SeLECTS patients, and 30 age- and sex-matched HC. We analyzed 30-second epochs of interictal epileptiform discharge (IED)-free resting-state magnetoencephalography (MEG) data. Source-level spectral power and functional connectivity (corrected amplitude envelope correlation, AEC-c) were computed across six frequency bands (delta to high-gamma). Group differences were assessed using Network-Based Statistics (NBS) and cluster-based permutation test.</div></div><div><h3>Results</h3><div>Both epilepsy groups, compared to HCs, exhibited a shared pattern of pathological brain 'slowing': significantly increased low-frequency (delta) power and decreased high-frequency (alpha, beta, gamma) power. At the network level, this was mirrored by alpha-band hyperconnectivity and gamma-band hypoconnectivity. Crucially, syndrome-specific patterns emerged. CAE was characterized by global network dysregulation, with widespread delta/theta hyperconnectivity and a profound reduction in parieto-occipital alpha power. In contrast, SeLECTS displayed features of focal origin with widespread impact, including extreme low-to-mid frequency (delta-to-alpha) hyperconnectivity across distinct subnetworks and a widespread decrease in high-frequency (beta to gamma) power, most prominent in the temporal lobes.</div></div><div><h3>Significance</h3><div>This study provides the first direct neuromagnetic comparison of drug-naive CAE and SeLECTS. While a shared signature of pathological brain slowing suggests a common substrate of network instability, their distinct patterns of network dysfunction—global dysregulation in CAE versus focal-origin hyperconnectivity and widespread high-frequency power collapse in SeLECTS—elucidate divergent pathophysiological mechanisms. These syndrome-specific neuromagnetic features hold potential as non-invasive biomarkers for differential diagnosis and therapeutic monitoring.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 106-116"},"PeriodicalIF":2.8,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-24DOI: 10.1016/j.seizure.2025.11.018
Shahla Melikova , Aytan Mammadbayli
Objective
To prospectively investigate seizure control during pregnancy in women with focal epilepsies, to assess the impact of specific forms of focal epilepsy (FE) on delivery and neonatal outcomes, and to compare these outcomes with those in pregnancies of women without epilepsy.
Methods
Seventy-nine women with FE, recruited from a large cohort of pregnant women, were prospectively evaluated for over a ten-year period. Seizure, obstetric, and neonatal outcomes were analyzed across the different forms of FE.
Results
Seizures occurred in 77.2 % of women with FE, with higher incidence in frontal lobe epilepsy (FLE) (88.2 %) and temporal lobe epilepsy (TLE) (84.1 %) compared with other focal epilepsies (OFEs) (50.0 %) (p = 0.02 and p = 0.0078, respectively). Women with FLE experienced higher rates of seizure worsening and lower odds of remaining seizure-free during pregnancy compared with those with temporal lobe epilepsy TLE and OFEs. Non-adherence to antiseizure medications was significantly associated with increased seizure frequency (p < 0.0001). WWE had higher rates of cesarean section, preterm birth, and premature rupture of membranes compared with women without epilepsy. Neonates of WWE had higher rates of five-minute Apgar scores ≤7 and perinatal hypoxia (pH), with pH significantly associated with any in utero seizure exposure (OR 9.33; p = 0.04), independent of seizure form. Offspring of women with FLE had the highest prevalence of low Apgar scores compared with TLE and OFEs.
Conclusion
Seizure occurrence during pregnancy, rather than the specific form of FE alone, can be considered the primary factor contributing to adverse maternal and neonatal outcomes. These findings emphasize the importance of continuous seizure management, ASM adherence, and individualized perinatal care in WWE.
{"title":"Seizure control, delivery, and neonatal outcomes in pregnant women with focal epilepsies: a prospective cohort study","authors":"Shahla Melikova , Aytan Mammadbayli","doi":"10.1016/j.seizure.2025.11.018","DOIUrl":"10.1016/j.seizure.2025.11.018","url":null,"abstract":"<div><h3>Objective</h3><div>To prospectively investigate seizure control during pregnancy in women with focal epilepsies, to assess the impact of specific forms of focal epilepsy (FE) on delivery and neonatal outcomes, and to compare these outcomes with those in pregnancies of women without epilepsy.</div></div><div><h3>Methods</h3><div>Seventy-nine women with FE, recruited from a large cohort of pregnant women, were prospectively evaluated for over a ten-year period. Seizure, obstetric, and neonatal outcomes were analyzed across the different forms of FE.</div></div><div><h3>Results</h3><div>Seizures occurred in 77.2 % of women with FE, with higher incidence in frontal lobe epilepsy (FLE) (88.2 %) and temporal lobe epilepsy (TLE) (84.1 %) compared with other focal epilepsies (OFEs) (50.0 %) (<em>p</em> = 0.02 and <em>p</em> = 0.0078, respectively). Women with FLE experienced higher rates of seizure worsening and lower odds of remaining seizure-free during pregnancy compared with those with temporal lobe epilepsy TLE and OFEs. Non-adherence to antiseizure medications was significantly associated with increased seizure frequency (<em>p</em> < 0.0001). WWE had higher rates of cesarean section, preterm birth, and premature rupture of membranes compared with women without epilepsy. Neonates of WWE had higher rates of five-minute Apgar scores ≤7 and perinatal hypoxia (pH), with pH significantly associated with any in utero seizure exposure (OR 9.33; <em>p</em> = 0.04), independent of seizure form. Offspring of women with FLE had the highest prevalence of low Apgar scores compared with TLE and OFEs.</div></div><div><h3>Conclusion</h3><div>Seizure occurrence during pregnancy, rather than the specific form of FE alone, can be considered the primary factor contributing to adverse maternal and neonatal outcomes. These findings emphasize the importance of continuous seizure management, ASM adherence, and individualized perinatal care in WWE.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 117-125"},"PeriodicalIF":2.8,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-23DOI: 10.1016/j.seizure.2025.11.016
Debopam Samanta , Sunil Naik
Objective
To evaluate the efficacy and safety of cenobamate in developmental and epileptic encephalopathies (DEE) through systematic review and meta-analysis.
Methods
We systematically searched electronic databases for studies reporting cenobamate outcomes in DEE. Primary outcome was the proportion of patients achieving ≥50 % seizure reduction. Secondary outcomes included seizure freedom, treatment retention, and treatment-emergent adverse events (TEAEs). Study quality was assessed using the Risk of Bias in Non-Randomized Studies of Interventions (ROBINS-I) tool. Generalized linear mixed-model (GLMM) meta-analyses with logit transformation were performed. Between-study heterogeneity was assessed using I² statistics. Leave-one-out sensitivity analysis identified influential studies. Meta-regression explored associations between study characteristics and outcomes. Evidence quality was evaluated using GRADE criteria.
Results
Fourteen studies involving 368 DEE patients were included; individual studies reported mean ages ranging from 8.7 to 42 years and follow-up durations of 3 to 24 months. Patients had extensive treatment histories (8–15 prior antiseizure medications). The pooled ≥50 % responder rate was 56.8 % (95 % CI: 41.9–70.6 %; I² = 74.9 %). Sensitivity analysis excluding four influential studies produced a similar estimate (63.4 %, 95 % CI: 46.5–77.6 %) with no heterogeneity. Seizure freedom was achieved in 10.3 % (95 % CI: 6.6–15.7 %; I² = 21.3 %). Treatment retention was high at 88.6 % (95 % CI: 66.9–96.7 %), though longitudinal data showed decline over time. TEAEs occurred in 60.3 % (95 % CI: 53.5–66.7 %), most often somnolence, dizziness, and ataxia, typically manageable with dose adjustments. No cases of DRESS were reported. Meta-regression found no significant association between age, follow-up duration, or prior/current antiseizure medication burden and treatment response.
Significance
Cenobamate demonstrates promising efficacy in highly refractory DEEs, with over half of patients achieving ≥50 % seizure reduction and ∼10 % attaining seizure freedom despite extensive prior treatment failures. The high retention rate and manageable safety profile support its use as a valuable therapeutic option in this difficult-to-treat population.
{"title":"Efficacy and safety of cenobamate in developmental and epileptic encephalopathies: A systematic review and meta-analysis","authors":"Debopam Samanta , Sunil Naik","doi":"10.1016/j.seizure.2025.11.016","DOIUrl":"10.1016/j.seizure.2025.11.016","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the efficacy and safety of cenobamate in developmental and epileptic encephalopathies (DEE) through systematic review and meta-analysis.</div></div><div><h3>Methods</h3><div>We systematically searched electronic databases for studies reporting cenobamate outcomes in DEE. Primary outcome was the proportion of patients achieving ≥50 % seizure reduction. Secondary outcomes included seizure freedom, treatment retention, and treatment-emergent adverse events (TEAEs). Study quality was assessed using the Risk of Bias in Non-Randomized Studies of Interventions (ROBINS-I) tool. Generalized linear mixed-model (GLMM) meta-analyses with logit transformation were performed. Between-study heterogeneity was assessed using I² statistics. Leave-one-out sensitivity analysis identified influential studies. Meta-regression explored associations between study characteristics and outcomes. Evidence quality was evaluated using GRADE criteria.</div></div><div><h3>Results</h3><div>Fourteen studies involving 368 DEE patients were included; individual studies reported mean ages ranging from 8.7 to 42 years and follow-up durations of 3 to 24 months. Patients had extensive treatment histories (8–15 prior antiseizure medications). The pooled ≥50 % responder rate was 56.8 % (95 % CI: 41.9–70.6 %; I² = 74.9 %). Sensitivity analysis excluding four influential studies produced a similar estimate (63.4 %, 95 % CI: 46.5–77.6 %) with no heterogeneity. Seizure freedom was achieved in 10.3 % (95 % CI: 6.6–15.7 %; I² = 21.3 %). Treatment retention was high at 88.6 % (95 % CI: 66.9–96.7 %), though longitudinal data showed decline over time. TEAEs occurred in 60.3 % (95 % CI: 53.5–66.7 %), most often somnolence, dizziness, and ataxia, typically manageable with dose adjustments. No cases of DRESS were reported. Meta-regression found no significant association between age, follow-up duration, or prior/current antiseizure medication burden and treatment response.</div></div><div><h3>Significance</h3><div>Cenobamate demonstrates promising efficacy in highly refractory DEEs, with over half of patients achieving ≥50 % seizure reduction and ∼10 % attaining seizure freedom despite extensive prior treatment failures. The high retention rate and manageable safety profile support its use as a valuable therapeutic option in this difficult-to-treat population.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 86-96"},"PeriodicalIF":2.8,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145624253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-23DOI: 10.1016/j.seizure.2025.11.017
David Steinbart , Rebekka Geelhaar , Rebekka Lehmann , Anja Grimmer , Martin Holtkamp
Objective
In people with intellectual disability (ID), prevalence of epilepsy is up to 50-times higher than in the general population and often difficult to treat. Multiple randomized controlled, observational and retrospective studies have demonstrated favorable efficacy of adjunctive cenobamate (CNB). So far, people with epilepsy and ID (PWE+ID) have remained significantly underrepresented. This retrospective study evaluated efficacy and tolerability of CNB specifically in adult PWE+ID compared to those without ID (PWE-ID).
Methods
Between 2021 and 2024, PWE at a tertiary epilepsy center were surveyed by telephone on a quarterly basis as part of clinical quality control after starting CNB. Retention rate, seizure outcome (comparing the preceding 3 months to 3 months baseline), and adverse events were assessed. Chi-square and Mann–Whitney U tests were used to compare groups, and a Bayesian analysis evaluated non-inferiority.
Results
A total of 108 PWE (51 PWE+ID) were monitored over 12 months after CNB initiation. Retention rates significantly differed between patients with and without ID after 3 months (100 % vs. 84 %, p = 0.04), but were not different after 6 (88 % vs. 77 %, p = 0.57) and 12 months (75 % vs. 70 %, p = 0.99). The 50 % responder rates were comparable at 6 months (46 % in PWE+ID vs. 47 % in PWE-ID, p = 0.99) and at 12 months (53 % vs. 53 %, p = 0.99). At 12 months, 21 % of PWE+ID (13 % of PWE-ID, p = 0.69) have remained free of disabling seizures. In Bayesian analysis, the probability of non-inferiority of 12-month outcomes in PWE+ID compared to PWE-ID was 97 % for retention and 94 % for 50 % responder rates. Adverse events (most frequently tiredness and dizziness) were reported by 59 % of PWE+ID (60 % of PWE-ID, p = 0.99) and resulted in CNB discontinuation within 12 months in 24 % of PWE+ID (28 % of PWE-ID, p = 0.70).
Significance
In adult PWE and intellectual disability, cenobamate is similarly efficacious and tolerated as in patients without ID.
{"title":"Cenobamate in adult patients with epilepsy and intellectual disability","authors":"David Steinbart , Rebekka Geelhaar , Rebekka Lehmann , Anja Grimmer , Martin Holtkamp","doi":"10.1016/j.seizure.2025.11.017","DOIUrl":"10.1016/j.seizure.2025.11.017","url":null,"abstract":"<div><h3>Objective</h3><div>In people with intellectual disability (ID), prevalence of epilepsy is up to 50-times higher than in the general population and often difficult to treat. Multiple randomized controlled, observational and retrospective studies have demonstrated favorable efficacy of adjunctive cenobamate (CNB). So far, people with epilepsy and ID (PWE+ID) have remained significantly underrepresented. This retrospective study evaluated efficacy and tolerability of CNB specifically in adult PWE+ID compared to those without ID (PWE-ID).</div></div><div><h3>Methods</h3><div>Between 2021 and 2024, PWE at a tertiary epilepsy center were surveyed by telephone on a quarterly basis as part of clinical quality control after starting CNB. Retention rate, seizure outcome (comparing the preceding 3 months to 3 months baseline), and adverse events were assessed. Chi-square and Mann–Whitney <em>U tests</em> were used to compare groups, and a Bayesian analysis evaluated non-inferiority.</div></div><div><h3>Results</h3><div>A total of 108 PWE (51 PWE+ID) were monitored over 12 months after CNB initiation. Retention rates significantly differed between patients with and without ID after 3 months (100 % vs. 84 %, <em>p</em> = 0.04), but were not different after 6 (88 % vs. 77 %, <em>p</em> = 0.57) and 12 months (75 % vs. 70 %, <em>p</em> = 0.99). The 50 % responder rates were comparable at 6 months (46 % in PWE+ID vs. 47 % in PWE-ID, <em>p</em> = 0.99) and at 12 months (53 % vs. 53 %, <em>p</em> = 0.99). At 12 months, 21 % of PWE+ID (13 % of PWE-ID, <em>p</em> = 0.69) have remained free of disabling seizures. In Bayesian analysis, the probability of non-inferiority of 12-month outcomes in PWE+ID compared to PWE-ID was 97 % for retention and 94 % for 50 % responder rates. Adverse events (most frequently tiredness and dizziness) were reported by 59 % of PWE+ID (60 % of PWE-ID, <em>p</em> = 0.99) and resulted in CNB discontinuation within 12 months in 24 % of PWE+ID (28 % of PWE-ID, <em>p</em> = 0.70).</div></div><div><h3>Significance</h3><div>In adult PWE and intellectual disability, cenobamate is similarly efficacious and tolerated as in patients without ID.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 126-133"},"PeriodicalIF":2.8,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-20DOI: 10.1016/j.seizure.2025.11.015
Jungyon Yum , Wonwoo Lee , Woo-Seok Ha , JaeWook Jeong , Kyung Min Kim , Min Kyung Chu , Won-Joo Kim , Soomi Cho
Purpose
We evaluated diffusion tensor image analysis along the perivascular space (DTI-ALPS) index asymmetry as an imaging correlate of glymphatic activity and its prognostic value in MRI-negative focal epilepsy.
Methods
We retrospectively studied 134 patients with MRI-negative focal epilepsy who underwent DTI (3T MRI) with >2-year follow-up. DTI-ALPS asymmetry index (AI) was calculated as |left-right|/mean. Multivariable logistic regression identified predictors of seizure freedom (SF; >1 year seizure-free) at last follow-up. Significant AI-correlated variables underwent mediation analysis. Cox proportional hazards models evaluated the association between DTI-ALPS AI and time to (1) first post-MRI SF and (2) final SF.
Results
Of the 134 patients (median age, 31 years; 72 female), 76 (57%) achieved SF at last follow-up. Compared to those without SF, patients with SF had significantly shorter epilepsy duration (median, 8 years vs. 15 years; p = 0.029), lower seizure frequency (median, 1 vs. 5; p < 0.001), and lower DTI-ALPS AI (median, 0.064 vs. 0.119; p < 0.001). In multivariable logistic regression, DTI-ALPS AI (odds ratio [OR] per 0.1 increase, 0.271; 95% confidence interval [CI], 0.135–0.493; p < 0.001) and seizure frequency (OR, 0.967; 95% CI, 0.940–0.992; p = 0.013) predicted SF at last follow-up. The effect of DTI-ALPS AI on long-term seizure outcomes was not significantly mediated by disease duration (average direct effect, –0.670; 95% CI, –0.841 to –0.486; p < 0.001; average causal mediated effect, –0.098; 95% CI, –0.259 to 0.056; p = 0.266). Patients with low DTI-ALPS AI (< 0.074) achieved SF earlier after MRI (pLog-rank = 0.012, pCox regression = 0.006) and were more likely to be seizure-free at last follow-up (both pLog-rank and pCox regression < 0.001).
Conclusion
Asymmetry in the DTI-ALPS index may reflect interhemispheric differences in glymphatic function that are driven by localized, lateralized seizure activity, and may thereby serve as a prognostic marker in MRI-negative focal epilepsy.
{"title":"Asymmetry in the diffusion tensor image analysis along the perivascular space index predicts seizure outcome in MRI-negative focal epilepsy","authors":"Jungyon Yum , Wonwoo Lee , Woo-Seok Ha , JaeWook Jeong , Kyung Min Kim , Min Kyung Chu , Won-Joo Kim , Soomi Cho","doi":"10.1016/j.seizure.2025.11.015","DOIUrl":"10.1016/j.seizure.2025.11.015","url":null,"abstract":"<div><h3>Purpose</h3><div>We evaluated diffusion tensor image analysis along the perivascular space (DTI-ALPS) index asymmetry as an imaging correlate of glymphatic activity and its prognostic value in MRI-negative focal epilepsy.</div></div><div><h3>Methods</h3><div>We retrospectively studied 134 patients with MRI-negative focal epilepsy who underwent DTI (3T MRI) with >2-year follow-up. DTI-ALPS asymmetry index (AI) was calculated as |left-right|/mean. Multivariable logistic regression identified predictors of seizure freedom (SF; >1 year seizure-free) at last follow-up. Significant AI-correlated variables underwent mediation analysis. Cox proportional hazards models evaluated the association between DTI-ALPS AI and time to (1) first post-MRI SF and (2) final SF.</div></div><div><h3>Results</h3><div>Of the 134 patients (median age, 31 years; 72 female), 76 (57%) achieved SF at last follow-up. Compared to those without SF, patients with SF had significantly shorter epilepsy duration (median, 8 years vs. 15 years; <em>p</em> = 0.029), lower seizure frequency (median, 1 vs. 5; <em>p</em> < 0.001), and lower DTI-ALPS AI (median, 0.064 vs. 0.119; <em>p</em> < 0.001). In multivariable logistic regression, DTI-ALPS AI (odds ratio [OR] per 0.1 increase, 0.271; 95% confidence interval [CI], 0.135–0.493; <em>p</em> < 0.001) and seizure frequency (OR, 0.967; 95% CI, 0.940–0.992; <em>p</em> = 0.013) predicted SF at last follow-up. The effect of DTI-ALPS AI on long-term seizure outcomes was not significantly mediated by disease duration (average direct effect, –0.670; 95% CI, –0.841 to –0.486; <em>p</em> < 0.001; average causal mediated effect, –0.098; 95% CI, –0.259 to 0.056; <em>p</em> = 0.266). Patients with low DTI-ALPS AI (< 0.074) achieved SF earlier after MRI (p<sub>Log-rank</sub> = 0.012, p<sub>Cox regression</sub> = 0.006) and were more likely to be seizure-free at last follow-up (both p<sub>Log-rank</sub> and p<sub>Cox regression</sub> < 0.001).</div></div><div><h3>Conclusion</h3><div>Asymmetry in the DTI-ALPS index may reflect interhemispheric differences in glymphatic function that are driven by localized, lateralized seizure activity, and may thereby serve as a prognostic marker in MRI-negative focal epilepsy.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 97-104"},"PeriodicalIF":2.8,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145624252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-16DOI: 10.1016/j.seizure.2025.11.013
Sumika Ouchida , Armin Nikpour , Greg Fairbrother
Background
There are many comorbidities related to epilepsy that affect the quality of life of people with epilepsy (PWE); sexual dysfunction (SD) is one of them.
Aim
We conducted a review to identify gaps in the literature to estimate the size of the problem and examined sexual dysfunction types, factors associated with SD, epilepsy care management, and facilitators/barriers reported for treatment success/failure.
Method
We searched for articles on sexual dysfunction, sexual problems, sexual behaviour, and erectile dysfunction in relation to epilepsy. We searched research databases, including Embase, Medline, PsycINFO, and PubMed, for articles written in English and published between 2000 and 2023.
Results
There is a high prevalence of SD in PWE, and multiple factors have been identified as being associated with SD. A range of validated questionnaire-based SD assessments is available. SD affects men and women differently. While several treatments and therapies are available to manage SD, there is limited evidence supporting their use for PWE. Healthcare professionals' lack of education relevant to SD affects their ability to treat PWE effectively.
Conclusion
Sexual problems are common in PWE. Healthcare providers should investigate drug-induced sexual problems as they can significantly affect patients' quality of life. Unfortunately, there are no established guidelines for treating sexual problems in epilepsy patients. More research is needed on treatments, and healthcare providers require additional education on SD-related issues to diagnose and effectively address these problems.
{"title":"Scoping review: Sexual dysfunction in people with epilepsy","authors":"Sumika Ouchida , Armin Nikpour , Greg Fairbrother","doi":"10.1016/j.seizure.2025.11.013","DOIUrl":"10.1016/j.seizure.2025.11.013","url":null,"abstract":"<div><h3>Background</h3><div>There are many comorbidities related to epilepsy that affect the quality of life of people with epilepsy (PWE); sexual dysfunction (SD) is one of them.</div></div><div><h3>Aim</h3><div>We conducted a review to identify gaps in the literature to estimate the size of the problem and examined sexual dysfunction types, factors associated with SD, epilepsy care management, and facilitators/barriers reported for treatment success/failure.</div></div><div><h3>Method</h3><div>We searched for articles on sexual dysfunction, sexual problems, sexual behaviour, and erectile dysfunction in relation to epilepsy. We searched research databases, including Embase, Medline, PsycINFO, and PubMed, for articles written in English and published between 2000 and 2023.</div></div><div><h3>Results</h3><div>There is a high prevalence of SD in PWE, and multiple factors have been identified as being associated with SD. A range of validated questionnaire-based SD assessments is available. SD affects men and women differently. While several treatments and therapies are available to manage SD, there is limited evidence supporting their use for PWE. Healthcare professionals' lack of education relevant to SD affects their ability to treat PWE effectively.</div></div><div><h3>Conclusion</h3><div>Sexual problems are common in PWE. Healthcare providers should investigate drug-induced sexual problems as they can significantly affect patients' quality of life. Unfortunately, there are no established guidelines for treating sexual problems in epilepsy patients. More research is needed on treatments, and healthcare providers require additional education on SD-related issues to diagnose and effectively address these problems.</div></div>","PeriodicalId":49552,"journal":{"name":"Seizure-European Journal of Epilepsy","volume":"134 ","pages":"Pages 54-69"},"PeriodicalIF":2.8,"publicationDate":"2025-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145574901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}