2020
Bi-allelic GAD1 variants cause a neonatal onset syndromic developmental and epileptic encephalopathy
Chatron N, Becker F, Morsy H, Schmidts M, Hardies K, Tuysuz B, Roselli S, Najafi M, Alkaya DU, Ashrafzadeh F, Nabil A, Omar T, Maroofian R, Karimiani EG, Hussien H, Kok F, Ramos L, Gunes N, Bilguvar K, Labalme A, Alix E, Sanlaville D, de Bellescize J, Poulat AL, Helbig I, von Spiczak S, Baulac S, Barisic N, Balling R, Caglayan H, Craiu D, Guerrini R, Klein K, Marini C, Muhle H, Rosenow F, Serratosa J, Sterbova K, Weber Y, Moslemi A, Lerche H, May P, Lesca G, Weckhuysen S, Tajsharghi H. Bi-allelic GAD1 variants cause a neonatal onset syndromic developmental and epileptic encephalopathy. Brain 2020, 143: 1447-1461. PMID: 32282878, PMCID: PMC7241960, DOI: 10.1093/brain/awaa085.Peer-Reviewed Original ResearchConceptsEpileptic encephalopathyJoint contracturesSeizure onsetCleft palateMonths of lifePost-neonatal periodYears of ageBi-allelic lossΓ-aminobutyric acid (GABA) metabolismEnzyme GAD67Epileptic spasmsEarly EEGEpilepsy syndromesMyoclonic seizuresEarly-onset epilepsy syndromeDisease historyPes equinovarusPatientsNovel syndromeEncephalopathyBurst attenuationIndependent consanguineous familiesFirst monthTherapeutic hopeFunction variants
2019
De Novo Pathogenic Variants in CACNA1E Cause Developmental and Epileptic Encephalopathy with Contractures, Macrocephaly, and Dyskinesias
Helbig KL, Lauerer RJ, Bahr JC, Souza IA, Myers CT, Uysal B, Schwarz N, Gandini MA, Huang S, Keren B, Mignot C, Afenjar A, de Villemeur T, Héron D, Nava C, Valence S, Buratti J, Fagerberg CR, Soerensen KP, Kibaek M, Kamsteeg EJ, Koolen DA, Gunning B, Schelhaas HJ, Kruer MC, Fox J, Bakhtiari S, Jarrar R, Padilla-Lopez S, Lindstrom K, Jin SC, Zeng X, Bilguvar K, Papavasileiou A, Xing Q, Zhu C, Boysen K, Vairo F, Lanpher BC, Klee EW, Tillema JM, Payne ET, Cousin MA, Kruisselbrink TM, Wick MJ, Baker J, Haan E, Smith N, Sadeghpour A, Davis EE, Katsanis N, Corbett M, MacLennan A, Gecz J, Biskup S, Goldmann E, Rodan L, Kichula E, Segal E, Jackson K, Asamoah A, Dimmock D, McCarrier J, Botto L, Filloux F, Tvrdik T, Cascino G, Klingerman S, Neumann C, Wang R, Jacobsen J, Nolan M, Snell R, Lehnert K, Sadleir L, Anderlid B, Kvarnung M, Guerrini R, Friez M, Lyons M, Leonhard J, Kringlen G, Casas K, Achkar C, Smith E, Rotenberg A, Poduri A, Sanchis-Juan A, Carss K, Rankin J, Zeman A, Raymond F, Blyth M, Kerr B, Ruiz K, Urquhart J, Hughes I, Banka S, Hedrich U, Scheffer I, Helbig I, Zamponi G, Lerche H, Mefford H, Allori A, Angrist M, Ashley P, Bidegain M, Boyd B, Chambers E, Cope H, Cotten C, Curington T, Davis E, Ellestad S, Fisher K, French A, Gallentine W, Goldberg R, Hill K, Kansagra S, Katsanis S, Katsanis S, Kurtzberg J, Marcus J, McDonald M, Mikati M, Miller S, Murtha A, Perilla Y, Pizoli C, Purves T, Ross S, Sadeghpour A, Smith L, Wiener J. De Novo Pathogenic Variants in CACNA1E Cause Developmental and Epileptic Encephalopathy with Contractures, Macrocephaly, and Dyskinesias. American Journal Of Human Genetics 2019, 104: 562. PMID: 30849329, PMCID: PMC6407522, DOI: 10.1016/j.ajhg.2019.02.015.Peer-Reviewed Original Research
2016
Loss-of-Function Mutations in FRRS1L Lead to an Epileptic-Dyskinetic Encephalopathy
Madeo M, Stewart M, Sun Y, Sahir N, Wiethoff S, Chandrasekar I, Yarrow A, Rosenfeld JA, Yang Y, Cordeiro D, McCormick EM, Muraresku CC, Jepperson TN, McBeth LJ, Seidahmed MZ, Khashab H, Hamad M, Azzedine H, Clark K, Corrochano S, Wells S, Elting MW, Weiss MM, Burn S, Myers A, Landsverk M, Crotwell PL, Waisfisz Q, Wolf NI, Nolan PM, Padilla-Lopez S, Houlden H, Lifton R, Mane S, Singh BB, Falk MJ, Mercimek-Mahmutoglu S, Bilguvar K, Salih MA, Acevedo-Arozena A, Kruer MC. Loss-of-Function Mutations in FRRS1L Lead to an Epileptic-Dyskinetic Encephalopathy. American Journal Of Human Genetics 2016, 98: 1249-1255. PMID: 27236917, PMCID: PMC4908178, DOI: 10.1016/j.ajhg.2016.04.008.Peer-Reviewed Original ResearchConceptsGlutamatergic neurotransmissionMovement disordersAbnormalities of glutamateEpileptic-dyskinetic encephalopathyHyperkinetic movement disordersChildhood movement disordersBiallelic pathogenic variantsChronic abnormalitiesNeurological diseasesNeurological disordersMammalian brainPathogenic variantsEpilepsyDisordersFunction mutationsNeurotransmissionAbnormalitiesMonogenic neurological diseasesOuter core proteinFRRS1LEncephalopathyEtiologyChoreoathetosisAMPAExcitatory