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Caraballo RH, Gallo A, Reyes G, Flores G, Martín E, Intriago L, Ballesta D. Epileptic spasms in clusters without hypsarrhythmia in infancy and childhood: A single age-dependent type of epilepsy or well-defined epileptic syndrome? Epilepsy Res 2024; 202:107354. [PMID: 38518433 DOI: 10.1016/j.eplepsyres.2024.107354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/26/2024] [Accepted: 03/18/2024] [Indexed: 03/24/2024]
Abstract
OBJECTIVE In this study, we present the electroclinical features and outcomes of 92 patients with epileptic spasms (ES) in clusters without modified or classical hypsarrhythmia that started in either in infancy or in childhood; we compared both groups in terms of electroclinical features, etiology, treatment, evolution, and outcome. METHODS Between June 2000 and July 2022, 92 patients met the electroclinical diagnostic criteria of ES in clusters without hypsarrhythmia. Patients with ES associated with other epileptic encephalopathies including West Syndrome, as well as those with the specific etiology of ES and developmental and epileptic encephalopathy associated with CDKL5 were excluded. RESULTS The patients were divided into two groups based on the age at ES onset: those with ES onset before (Group 1) and those with ES onset after 2 years of age (Group 2). The features of ES and the type of associated seizures before and after ES onset, as well as the interictal and ictal EEG and electromyography findings were similar in both groups. The etiologies were mainly structural (40.2%), genetic (11.9%), and unknown (44.6%) in majority of the patients in both groups. Thirty-one patients were seizure-free, while in the remaining patients the seizures continued. Nine patients (9.8%) with unilateral structural lesions underwent surgery with good results. The neurological abnormalities and developmental findings prior to ES onset depended on the underlying etiology. CONCLUSION Our series of patients may represent a well-defined epileptic syndrome or type of epilepsy with onset in infancy or childhood characterized by ES in clusters without hypsarrhythmia associated with focal and generalized seizures and EEG paroxysms without neurological deterioration.
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Affiliation(s)
- Roberto H Caraballo
- Department of Neurology, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina.
| | - Adolfo Gallo
- Department of Neurology, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina
| | - Gabriela Reyes
- Department of Neurology, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina
| | - Giovana Flores
- Department of Neurology, Hospital de Niños Mario Ortiz Suarez, Santa Cruz, Bolivia
| | - Eugenia Martín
- Genomics Laboratory, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina
| | - Lenin Intriago
- Department of Neurology, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina
| | - Diego Ballesta
- Department of Neurology, Hospital de Pediatría Prof. Dr. Juan P Garrahan, Buenos Aires, Argentina
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Reyes Valenzuela G, Gallo A, Calvo A, Chacón S, Fasulo L, Galicchio S, Adi J, Fortini PS, Caraballo R. Purified cannabidiol as add-on therapy in children with treatment-resistant infantile epileptic spasms syndrome. Seizure 2024; 115:94-99. [PMID: 38237316 DOI: 10.1016/j.seizure.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/08/2024] [Accepted: 01/14/2024] [Indexed: 02/17/2024] Open
Abstract
OBJECTIVE The aim of this study was to assess efficacy, safety, and tolerability of highly purified cannabidiol oil (CBD) as add-on therapy for the treatment of a series of patients with infantile epileptic spasms syndrome (IESS) who were resistant to antiseizure medications and ketogenic dietary therapy. MATERIAL AND METHODS We conducted a retrospective analysis of the medical records of 28 infants with treatment-resistant IESS aged 6 to 21 months who received highly purified CBD between July 2021 and June 2023. Data were collected on neurological examinations, EEG, Video-EEG and polygraphic recordings, imaging studies, laboratory testing, and seizure frequency, type, and duration, and adverse effects. As the primary outcome, a reduction of frequency of epileptic spasms (ES) was assessed. ES freedom was considered after a minimal time of 1 month without ES. RESULTS Sixteen male and 12 female patients, aged 6-21 months, who received CBD for treatment-resistant IESS were included. The etiology was structural in 10, Down syndrome in seven, genetic in nine, and unknown in two. Initial CBD dose was 2 mg/kg/day, which was uptitrated to a median dose of 25 mg/kg/day (range, 2-50). Prior to CBD initiation, patients had a median of 69 ES in clusters per day (range, 41-75) and of 10 focal seizures per week (range, 7-13). After a mean and median follow-up of 15 and 12.5 months (range, 6-26 months), seven patients were ES free and 12 had a >50 % ES reduction. Five of seven patients (71 %) with Down syndrome and 3/5 (60 %) with cerebral palsy responded well. Adverse effects were mild. EEG improvements correlated with ES reductions. CONCLUSION In this study evaluating the use of CBD in children with IESS, 19/28 (67.8 %) had a more than 50 % ES reduction with good tolerability.
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Affiliation(s)
- Gabriela Reyes Valenzuela
- Department of Neurology, Hospital de Pediatría Juan P Garrahan, Combate de los Pozos, Buenos Aires 1881 Argentina
| | - Adolfo Gallo
- Department of Neurology, Hospital de Pediatría Juan P Garrahan, Combate de los Pozos, Buenos Aires 1881 Argentina
| | - Agustin Calvo
- Department of Pediatric Neurology, Hospital Regional de Comodoro Rivadavia, Argentina
| | | | - Lorena Fasulo
- Department of Neurology, Clinica San Lucas, Neuquen, Argentina
| | | | - Javier Adi
- Department of Pediatric Neurology, Hospital Notti, Mendoza, Argentina
| | - Pablo Sebastian Fortini
- Department of Neurology, Hospital de Pediatría Juan P Garrahan, Combate de los Pozos, Buenos Aires 1881 Argentina
| | - Roberto Caraballo
- Department of Neurology, Hospital de Pediatría Juan P Garrahan, Combate de los Pozos, Buenos Aires 1881 Argentina.
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Liang Y, Wan L, Liu X, Zhang J, Zhu G, Yang G. Infantile epileptic spasm syndrome as a new NR2F1 gene phenotype. Int J Dev Neurosci 2024; 84:75-83. [PMID: 38010976 DOI: 10.1002/jdn.10309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/29/2023] Open
Abstract
INTRODUCTION NR2F1 pathogenetic variants are associated with the Bosch-Boonstra-Schaaf optic atrophy syndrome (BBSOAS). Recent studies indicate that BBSOAS patients not only have visual impairments but may also have developmental delays, hypotonia, thin corpus callosum and epileptic seizures. However, reports of BBSOAS occurrence along with infantile epileptic spasm syndrome (IESS) are rare. METHODS Here, we report three cases involving children with IESS and BBSOAS caused by de novo NR2F1 pathogenetic variants and summarize the genotype, clinical characteristics, diagnosis and treatment of them. RESULTS All three children experienced epileptic spasms and global developmental delays, with brain Magnetic Resonance Imaging (MRI) suggesting abnormalities (thinning of the corpus callosum or widened extracerebral spaces) and two of the children exhibiting abnormal visual evoked potentials. CONCLUSIONS Our findings indicate that new missense NR2F1 pathogenetic variants may lead to IESS with abnormal visual evoked potentials. Thus, clinicians should be aware of the Bosch-Boonstra-Schaaf optic atrophy syndrome and regular monitoring of the fundus, and the optic nerve is necessary during follow-up.
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Affiliation(s)
- Yan Liang
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
| | - Lin Wan
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
| | - Xinting Liu
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
| | - Jing Zhang
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
| | - Gang Zhu
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
| | - Guang Yang
- Senior Department of Pediatrics, Seventh Medical Center of PLA General Hospital, Beijing, China
- Department of Pediatrics, First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese People's Liberation Army, Beijing, China
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Barbour K, Tian N, Yozawitz EG, Wolf S, McGoldrick PE, Sands TT, Nelson A, Basma N, Grinspan ZM. Creating rare epilepsy cohorts using keyword search in electronic health records. Epilepsia 2023; 64:2738-2749. [PMID: 37498137 PMCID: PMC10984273 DOI: 10.1111/epi.17725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023]
Abstract
OBJECTIVE Administrative codes to identify people with rare epilepsies in electronic health records are limited. The current study evaluated the use of keyword search as an alternative method for rare epilepsy cohort creation using electronic health records data. METHODS Data included clinical notes from encounters with International Classification of Diseases, Ninth Revision (ICD-9) codes for seizures, epilepsy, and/or convulsions during 2010-2014, across six health care systems in New York City. We identified cases with rare epilepsies by searching clinical notes for keywords associated with 33 rare epilepsies. We validated cases via manual chart review. We compared the performance of keyword search to manual chart review using positive predictive value (PPV), sensitivity, and F-score. We selected an initial combination of keywords using the highest F-scores. RESULTS Data included clinical notes from 77 924 cases with ICD-9 codes for seizures, epilepsy, and/or convulsions. The all-keyword search method identified 6095 candidates, and manual chart review confirmed that 2068 (34%) had a rare epilepsy. The initial combination method identified 1862 cases with a rare epilepsy, and this method performed as follows: PPV median = .64 (interquartile range [IQR] = .50-.81, range = .20-1.00), sensitivity median = .93 (IQR = .76-1.00, range = .10-1.00), and F-score median = .71 (IQR = .63-.85, range = .18-1.00). Using this method, we identified four cohorts of rare epilepsies with over 100 individuals, including infantile spasms, Lennox-Gastaut syndrome, Rett syndrome, and tuberous sclerosis complex. We identified over 50 individuals with two rare epilepsies that do not have specific ICD-10 codes for cohort creation (epilepsy with myoclonic atonic seizures, Sturge-Weber syndrome). SIGNIFICANCE Keyword search is an effective method for cohort creation. These findings can improve identification and surveillance of individuals with rare epilepsies and promote their referral to specialty clinics, clinical research, and support groups.
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Affiliation(s)
- Kristen Barbour
- University of California San Diego, San Diego, California, USA
| | - Niu Tian
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Elissa G Yozawitz
- Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Steven Wolf
- Boston Children's Health Physicians, Hawthorne, New York, USA
- New York Medical College, Valhalla, New York, USA
| | - Patricia E McGoldrick
- Boston Children's Health Physicians, Hawthorne, New York, USA
- New York Medical College, Valhalla, New York, USA
| | - Tristan T Sands
- Columbia University Irving Medical Center, New York, New York, USA
| | - Aaron Nelson
- New York University Langone Medical Center, New York, New York, USA
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Wang G, Wu W, Xu Y, Yang Z, Xiao B, Long L. Imaging Genetics in Epilepsy: Current Knowledge and New Perspectives. Front Mol Neurosci 2022; 15:891621. [PMID: 35706428 PMCID: PMC9189397 DOI: 10.3389/fnmol.2022.891621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/06/2022] [Indexed: 12/11/2022] Open
Abstract
Epilepsy is a neurological network disease with genetics playing a much greater role than was previously appreciated. Unfortunately, the relationship between genetic basis and imaging phenotype is by no means simple. Imaging genetics integrates multidimensional datasets within a unified framework, providing a unique opportunity to pursue a global vision for epilepsy. This review delineates the current knowledge of underlying genetic mechanisms for brain networks in different epilepsy syndromes, particularly from a neural developmental perspective. Further, endophenotypes and their potential value are discussed. Finally, we highlight current challenges and provide perspectives for the future development of imaging genetics in epilepsy.
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Affiliation(s)
- Ge Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Clinical Research Center for Epileptic Disease of Hunan Province, Central South University, Changsha, China
| | - Wenyue Wu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Yuchen Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhuanyi Yang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Clinical Research Center for Epileptic Disease of Hunan Province, Central South University, Changsha, China
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Clinical Research Center for Epileptic Disease of Hunan Province, Central South University, Changsha, China
| | - Lili Long
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Clinical Research Center for Epileptic Disease of Hunan Province, Central South University, Changsha, China
- *Correspondence: Lili Long
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Cannabidiol-enriched medical cannabis as add-on therapy in children with treatment-resistant West syndrome: A study of eight patients. Seizure 2021; 92:238-243. [PMID: 34624613 DOI: 10.1016/j.seizure.2021.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/15/2021] [Accepted: 10/02/2021] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Here we present a series of patients with WS that were refractory to antiseizure medications and the ketogenic diet and who were treated with cannabidiol-enriched cannabis oil (CBD) as add-on therapy analyzing efficacy, safety, and tolerability. MATERIAL AND METHODS Medical records of eight patients with WS treated with CBD at a ratio of cannabidiol:Δ-9-tetrahydrocannabinol (CBD:THC) of 25:1 seen between May 2020 and March 2021 were retrospectively analyzed. In all patients CBD was started as add-on therapy. RESULTS Eight patients (six female and two male) who received CBD for treatment-resistant WS were evaluated. Ages ranged from 16 to 22 months. The etiology was unknown in five and structural in three. Initial CBD dose was 2 mg/kg/day which was uptitrated to a median dose of 12 mg/kg/day (range, 2-25). Prior to CBD initiation, patients had a mean of 63 seizures per day (range, 31-79). After a follow-up of between 6 and 13 months, a 75-99% decrease in seizure frequency was observed in two patients, a 50-74% decrease in two, a less than 50% decrease in three, and no changes in seizure frequency were seen in the remaining patient. The index of EEG abnormalities improved between 20 and 80% in seven patients concurrently with the reduction in seizures. Adverse effects were mild and transient. Somnolence was observed in one patient, nausea and vomiting in one, and behavior disturbances and irritability in another patient. CONCLUSION This study evaluating the use of cannabidiol-enriched cannabis oil in children with WS showed that four (50%) of eight had a more than 50% seizure reduction with good tolerability.
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Sonoda Y, Sanefuji M, Ichimiya Y, Torio M, Watanabe E, Sakata A, Ishizaki Y, Sakai Y, Ohga S. Age-related morphological differences in the spike-and-wave complexes of absence epilepsy. Epilepsy Res 2021; 174:106647. [PMID: 33915304 DOI: 10.1016/j.eplepsyres.2021.106647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 03/29/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Absence epilepsy shows age-related clinical features, as is observed in childhood and juvenile absence epilepsy. Electroencephalogram (EEG) is characterized by bursts of 3 Hz spike-and-wave complex (SWC). We noticed a morphological variation of the slow-wave component of SWCs between patients. This study investigated whether the waveform of SWC might be associated with the child's age of this epilepsy. METHODS Digitally-recorded EEGs under medication-free conditions were collected from 25 children who received the diagnosis of childhood or juvenile absence epilepsy. The morphology of slow wave in SWC in the frontal midline region was quantitatively compared between younger and older children using a cluster-based permutation test. RESULTS At <7 years of age (2.9-6.5 years of age, n = 6), the electrical potential of the descending slope in the slow wave was positively correlated with age whereas this correlation was not observed in patients of ≥7 years of age (7.1-12.9 years, n = 19). A cluster-based permutation test confirmed the results-among the entire slow wave period (0-285 msec), the period of the descending slope (195-260 msec) showed significantly lower potential in patients of <7 years of age in comparison to patients of ≥7 years of age (sum of t-values: 46.57, p-value: 0.011). CONCLUSIONS The current study demonstrated an age-dependent morphological difference in the slow-wave components of SWCs in EEGs of patients with pediatric absence epilepsy. This finding may provide a clue to understanding the age-related clinical manifestations of this epilepsy.
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Affiliation(s)
- Yuri Sonoda
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan; Research Center for Environment and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Masafumi Sanefuji
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan; Research Center for Environment and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Yuko Ichimiya
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Michiko Torio
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Eriko Watanabe
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ayumi Sakata
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yoshito Ishizaki
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan; Department of Pediatrics, Fukuoka Higashi Medical Center, 1-1-1 Chidori, Koga, Fukuoka, 811-3195, Japan
| | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Shouichi Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Lattanzi S, Riva A, Striano P. Ganaxolone treatment for epilepsy patients: from pharmacology to place in therapy. Expert Rev Neurother 2021; 21:1317-1332. [PMID: 33724128 DOI: 10.1080/14737175.2021.1904895] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: Nonsulfated neurosteroids can provide phasic and tonic inhibition through activation of synaptic and extra-synaptic γ-aminobutyric acid (GABA)A receptors, exhibiting a greater potency for the latter. These actions occur by interacting with modulatory sites that are distinct from those bound by benzodiazepines and barbiturates. Ganaxolone (GNX) is a synthetic analog of the endogenous neurosteroid allopregnanolone and a member of a novel class of neuroactive steroids called epalons.Areas covered: The authors review the pharmacology of GNX, summarize the main clinical evidence about its antiseizure efficacy and tolerability, and suggest implications for clinical practice and future research.Expert opinion: The clinical development of GNX is mainly oriented to target unmet needs and focused on status epilepticus and rare genetic epilepsies that have few or no treatment options.The availability of oral and intravenous formulations allows reaching adult and pediatric patients in acute and chronic care settings. Further evidence will complement the understanding of the potentialities of GNX and possibly lead to indications for use in clinical practice.
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Affiliation(s)
- Simona Lattanzi
- Neurological Clinic, Department of Experimental and Clinical Medicine, Marche Polytechnic University, Ancona, Italy
| | - Antonella Riva
- Pediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, "G. Gaslini" Institute, University of Genoa, Genova, Italy
| | - Pasquale Striano
- Pediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, "G. Gaslini" Institute, University of Genoa, Genova, Italy
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