Clinical and Genetic Features in Patients With Reflex Bathing Epilepsy.

Neurology

From IRCCS Istituto Giannina Gaslini (A.A., M.S., M.I., A.R., B.C., P.S., S.B., V.D.S., C.M., F.Z., P.S.); Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI) (A.A., M.S., P.S., V.D.S., C.M., F.Z., P.S.), University of Genoa, Italy; Neuropediatrics Section of the Department of Pediatrics (G.W.), Asklepios Clinic Hamburg Nord-Heidberg, Hamburg; Department of Pediatric and Adolescent Medicine II (Neuropediatrics, Social Pediatrics) (G.W.), University Medical Centre Schleswig-Holstein, Kiel, Germany; Department of Neurosciences (C.C., C.D.L.), Pediatric Neurology Unit, Tor Vergata University, Roma; Human Genetics (L.C., F. Brancati), Department of Life, Health, and Environmental Sciences, and Department of Pediatrics (A.V.), University of L'Aquila; Child Neuropsychiatry Unit (V.B.), Department of Mental Health, ASST-LARIANA, Como; Medical Genetics Unit (P.P.), "S. Maria della Misericordia" Hospital, Perugia, Italy; Department of Pediatric Neurology (A.F.-J.), Hospital Universitario Quirónsalud and Universidad Europea de Madrid, Madrid, Spain; Istanbul University Istanbul Faculty of Medicine (N.B.), Department of Neurology, Turkey; Department of Biomedicine and Prevention (G.N.), Tor Vergata University of Rome; IRCCS Neuromed (G.N.), Pozzilli, Italy; Department of Pharmacology (G.N.), School of Medicine, University of Nevada, Reno; Department of Pediatrics (C.v.S.), University Hospital Munich, Germany; Paracelsus Medical University (C.v.S.), Salzburg, Austria; Epilepsy Center for Children and Adolescents (F.K., G.J.K.), Vogtareuth, Germany; Department of Neuropediatrics (G.C.W., G.R.), University Children's Hospital Zurich, Switzerland; Translational and Clinical Research Institute (D.L.-S., R.H.T., M.L.), Newcastle University; Department of Clinical Neurosciences (D.L.-S., R.H.T., M.L.), Newcastle Upon Tyne Hospitals National Health Service Foundation Trust, UK; Epilepsy Center (S.S.), Federico II University, Napoli, Italy; Institute of Human Genetics (C.D.), University Hospital Essen, University of Duisburg-Essen, Essen, Germany; Institut du Cerveau et de la Moelle épinière (ICM) (C.D.), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, Paris, France; Center for Synaptic Neuroscience and Technology (F.Benfenati), Istituto Italiano di Tecnologia; IRCCS Ospedale Policlinico San Martino (F. Benfenati), Genoa; and Human Functional Genomics (F. Brancati), IRCCS San Raffaele Pisana, Rome, Italy

Published: August 2021

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.

Results: In all families with bathing epilepsy, we identified 8 distinct pathogenic or likely pathogenic variants and 2 variants of unknown significance in , 9 of which are novel. Conversely, none of the individuals with hot-water epilepsy displayed variants. In mutated individuals, seizures were typically triggered by showering or bathing regardless of the water temperature. Additional triggers included fingernail clipping, haircutting, or watching someone take a shower. Unprovoked seizures and a variable degree of developmental delay were also common.

Conclusion: Bathing epilepsy is genetically distinct reflex epilepsy caused mainly by mutations.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8424500PMC
http://dx.doi.org/10.1212/WNL.0000000000012298DOI Listing

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