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28 results on '"Mancardi M. M."'

1. Treatment of MOG antibody associated disorders: results of an international survey

Author

Whittam, D. H., Karthikeayan, V., Gibbons, E., Kneen, R., Chandratre, S., Ciccarelli, O., Hacohen, Y., de Seze, J., Deiva, K., Hintzen, R. Q., Wildemann, B., Jarius, S., Kleiter, I., Rostasy, K., Huppke, P., Hemmer, B., Paul, F., Aktas, O., Pröbstel, A. K., Arrambide, G., Tintore, M., Amato, M. P., Nosadini, M., Mancardi, M. M., Capobianco, M., Illes, Z., Siva, A., Altintas, A., Akman-Demir, G., Pandit, L., Apiwattankul, M., Hor, J. Y., Viswanathan, S., Qiu, W., Kim, H. J., Nakashima, I., Fujihara, K., Ramanathan, S., Dale, R. C., Boggild, M., Broadley, S., Lana-Peixoto, M. A., Sato, D. K., Tenembaum, S., Cabre, P., Wingerchuk, D. M., Weinshenker, B. G., Greenberg, B., Matiello, M., Klawiter, E. C., Bennett, J. L., Wallach, A. I., Kister, I., Banwell, B. L., Traboulsee, A., Pohl, D., Palace, J., Leite, M. I., Levy, M., Marignier, R., Solomon, T., Lim, M., Huda, S., and Jacob, A.

Published
2020
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2. Variant-specific changes in RAC3 function disrupt corticogenesis in neurodevelopmental phenotypes

Author

Scala, M., Nishikawa, M., Ito, H., Tabata, H., Khan, T., Accogli, A., Davids, L., Ruiz, A., Chiurazzi, Pietro, Cericola, G., Schulte, B., Monaghan, K. G., Begtrup, A., Torella, A., Pinelli, M., Denomme-Pichon, A. -S., Vitobello, A., Racine, C., Mancardi, M. M., Kiss, C., Guerin, A., Wu, W., Vila, E. G., Mak, B. C., Martinez-Agosto, J. A., Gorin, M. B., Duz, B., Bayram, Y., Carvalho, C. M. B., Vengoechea, J. E., Chitayat, D., Tan, T. Y., Callewaert, B., Kruse, B., Bird, L. M., Faivre, L., Zollino, Marcella, Biskup, S., Striano, P., Nigro, V., Severino, M., Capra, V., Costain, G., Nagata, K. -I., Brown, G., Butte, M. J., Dell'Angelica, E. C., Dorrani, N., Douine, E. D., Fogel, B. L., Gutierrez, I., Huang, A., Krakow, D., Lee, H., Loo, S. K., Martin, M. G., Mcgee, E., Nelson, S. F., Nieves-Rodriguez, S., Palmer, C. G. S., Papp, J. C., Parker, N. H., Renteria, G., Sinsheimer, J. S., Wan, J., Wang, L. -K., Perry, K. W., Brunetti-Pierri, N., Casari, G., Cappuccio, G., Musacchia, F., Mutarelli, M., Carrella, D., Vitiello, G., Parenti, G., Leuzzi, V., Selicorni, A., Maitz, S., Banfi, S., Montomoli, M., Milani, D., Romano, C., Tummolo, A., De Brasi, D., Coppola, A., Santoro, C., Peron, A., Pantaleoni, C., Castello, R., D'Arrigo, S., Scala, Marcello, Nishikawa, Masashi, Ito, Hidenori, Tabata, Hidenori, Khan, Tayyaba, Accogli, Andrea, Davids, Laura, Ruiz, Anna, Chiurazzi, Pietro, Cericola, Gabriella, Schulte, Björn, Monaghan, Kristin G, Begtrup, Amber, Torella, Annalaura, Pinelli, Michele, Denommé-Pichon, Anne Sophie, Vitobello, Antonio, Racine, Caroline, Mancardi, Maria Margherita, Kiss, Courtney, Guerin, Andrea, Wu, Wendy, Gabau Vila, Elisabeth, Mak, Bryan C, Martinez-Agosto, Julian A, Gorin, Michael B, Duz, Bugrahan, Bayram, Yavuz, Carvalho, Claudia M B, Vengoechea, Jaime E, Chitayat, David, Tan, Tiong Yang, Callewaert, Bert, Kruse, Bernd, Bird, Lynne M, Faivre, Laurence, Zollino, Marcella, Biskup, Saskia, Striano, Pasquale, Nigro, Vincenzo, Severino, Mariasavina, Capra, Valeria, Costain, Gregory, Nagata, Koh Ichi, and Nagata, Koh-Ichi

Subjects
brain development, Settore MED/03 - GENETICA MEDICA, Medical and Health Sciences, Telethon Undiagnosed Diseases Program, Mice, Neurodevelopmental Disorder, Medicine and Health Sciences, Animals, Humans, 2.1 Biological and endogenous factors, Aetiology, Neurons, Pediatric, neuronal migration, Neurology & Neurosurgery, Animal, axon guidance, Psychology and Cognitive Sciences, p21-Activated Kinase, Neurosciences, Biology and Life Sciences, Undiagnosed Diseases Network, Neuron, rac GTP-Binding Proteins, Brain Disorders, RAC3, Phenotype, p21-Activated Kinases, Neurodevelopmental Disorders, small GTPase, Neurological, Congenital Structural Anomalies, Neurology (clinical), Human
Abstract

Variants in RAC3, encoding a small GTPase RAC3 which is critical for the regulation of actin cytoskeleton and intracellular signal transduction, are associated with a rare neurodevelopmental disorder with structural brain anomalies and facial dysmorphism. We investigated a cohort of 10 unrelated participants presenting with global psychomotor delay, hypotonia, behavioural disturbances, stereotyped movements, dysmorphic features, seizures and musculoskeletal abnormalities. MRI of brain revealed a complex pattern of variable brain malformations, including callosal abnormalities, white matter thinning, grey matter heterotopia, polymicrogyria/dysgyria, brainstem anomalies and cerebellar dysplasia. These patients harboured eight distinct de novo RAC3 variants, including six novel variants (NM_005052.3): c.34G > C p.G12R, c.179G > A p.G60D, c.186_188delGGA p.E62del, c.187G > A p.D63N, c.191A > G p.Y64C and c.348G > C p.K116N. We then examined the pathophysiological significance of these novel and previously reported pathogenic variants p.P29L, p.P34R, p.A59G, p.Q61L and p.E62K. In vitro analyses revealed that all tested RAC3 variants were biochemically and biologically active to variable extent, and exhibited a spectrum of different affinities to downstream effectors including p21-activated kinase 1. We then focused on the four variants p.Q61L, p.E62del, p.D63N and p.Y64C in the Switch II region, which is essential for the biochemical activity of small GTPases and also a variation hot spot common to other Rho family genes, RAC1 and CDC42. Acute expression of the four variants in embryonic mouse brain using in utero electroporation caused defects in cortical neuron morphology and migration ending up with cluster formation during corticogenesis. Notably, defective migration by p.E62del, p.D63N and p.Y64C were rescued by a dominant negative version of p21-activated kinase 1. Our results indicate that RAC3 variants result in morphological and functional defects in cortical neurons during brain development through variant-specific mechanisms, eventually leading to heterogeneous neurodevelopmental phenotypes. Scala et al. identify six de novo variants in RAC3, which encodes a small GTPase, in 10 unrelated subjects with neurodevelopmental phenotypes. In vivo and in vitro analyses in mice reveal that RAC3 variants cause morpho-functional defects in cortical neurons through variant-specific mechanisms, disrupting corticogenesis.

Published
2022

3. De novo POLR2A p.(Ile457Thr) variant associated with early-onset encephalopathy and cerebellar atrophy: expanding the phenotypic spectrum

Author

Giacomini, T., Scala, M., Nobile, G., Severino, M., Tortora, D., Nobili, L., Accogli, A., Torella, A., Capra, V., Mancardi, M. M., Nigro, V., Cappuccio, G., Musacchia, F., Mutarelli, M., Carrella, D., Vitiello, G., Parenti, G., Leuzzi, V., Selicorni, A., Maitz, S., Pierri, N. B., Banfi, S., Zollino, Marcella, Montomoli, M., Milani, D., Romano, C., Tummolo, A., De Brasi, D., Coppola, A., Santoro, C., Zollino M. (ORCID:0000-0003-4871-9519), Giacomini, T., Scala, M., Nobile, G., Severino, M., Tortora, D., Nobili, L., Accogli, A., Torella, A., Capra, V., Mancardi, M. M., Nigro, V., Cappuccio, G., Musacchia, F., Mutarelli, M., Carrella, D., Vitiello, G., Parenti, G., Leuzzi, V., Selicorni, A., Maitz, S., Pierri, N. B., Banfi, S., Zollino, Marcella, Montomoli, M., Milani, D., Romano, C., Tummolo, A., De Brasi, D., Coppola, A., Santoro, C., and Zollino M. (ORCID:0000-0003-4871-9519)

Abstract

Background: Heterozygous POLR2A variants have been recently reported in patients with a neurodevelopmental syndrome characterized by profound infantile-onset hypotonia. POLR2A encodes the highly conserved RBP1 protein, an essential subunit of the DNA-dependent RNA polymerase II. Case presentation: We investigated a 12-year-old girl presenting with an early-onset encephalopathy characterized by psychomotor delay, facial dysmorphism, refractory epilepsy with variable seizure types, behavioural abnormalities, and sleep disorder. Brain MRI showed a slowly progressive cerebellar atrophy. Trio-exome sequencing (Trio-ES) revealed the de novo germline variant NM_000937.5:c.1370T>C; p.(Ile457Thr) in POLR2A. This variant was previously reported in a subject with profound generalized hypotonia and muscular atrophy by Haijes et al. Our patient displayed instead a severe epileptic phenotype with refractory hypotonic seizures with impaired consciousness, myoclonic jerks, and drop attacks. Conclusion: This case expands the clinical spectrum of POLR2A-related syndrome, highlighting its phenotypic variability and supporting the relevance of epilepsy as a core feature of this emerging condition.

Published
2022

4. Guidelines for vascular anomalies by the Italian Society for the study of Vascular Anomalies (SISAV)

Author

Stillo, F., Mattassi, R., Diociaiuti, A., Neri, I., Baraldini, V., Dalmonte, P., Amato, B., Ametrano, O., Amico, G., Bianchini, G., Campisi, C., Cattaneo, E., Causin, F., Cavalli, R., Colletti, G., Corbeddu, M., Coppo, P., De Fiores, A., Di Giuseppe, P., El Hachem, M., Esposito, F., Fulcheri, E., Gandolfo, C., Grussu, F., Guglielmo, A., Leuzzi, M., Manunza, F., Moneghini, L., Monzani, N. A., Nicodemi, E. M., Occella, C., Orso, M., Pagella, F. G., Paolantonio, G., Pasetti, F., Rollo, M., Ruggiero, F., Santecchia, L., Spaccini, L., Taurino, M., Vaghi, M., Vercellio, G., Zama, M., Zocca, A., Aguglia, M., Castronovo, E. L., De Lorenzi, E., Fontana, E., Gusson, E., Lanza, J., Lizzio, R., Mancardi, M. M., Rosina, E., Chiti, D., Lugli, M., and Maleti, O.

Subjects
Humans, Italy, Vascular Diseases, Vascular Malformations, Cardiology and Cardiovascular Medicine
Published
2022

6. Bi-allelic variants in SPATA5L1 lead to intellectual disability, spastic-dystonic cerebral palsy, epilepsy, and hearing loss

Author

Richard, E. M., Bakhtiari, S., Marsh, A. P. L., Kaiyrzhanov, R., Wagner, M., Shetty, S., Pagnozzi, A., Nordlie, S. M., Guida, B. S., Cornejo, P., Magee, H., Liu, J., Norton, B. Y., Webster, R. I., Worgan, L., Hakonarson, H., Li, J., Guo, Y., Jain, M., Blesson, A., Rodan, L. H., Abbott, M. -A., Comi, A., Cohen, J. S., Alhaddad, B., Meitinger, T., Lenz, D., Ziegler, A., Kotzaeridou, U., Brunet, T., Chassevent, A., Smith-Hicks, C., Ekstein, J., Weiden, T., Hahn, A., Zharkinbekova, N., Turnpenny, P., Tucci, A., Yelton, M., Horvath, R., Gungor, S., Hiz, S., Oktay, Y., Lochmuller, H., Zollino, M., Morleo, M., Marangi, G., Nigro, V., Torella, A., Pinelli, M., Amenta, S., Husain, R. A., Grossmann, B., Rapp, M., Steen, C., Marquardt, I., Grimmel, M., Grasshoff, U., Korenke, G. C., Owczarek-Lipska, M., Neidhardt, J., Radio, F. C., Mancini, C., Claps Sepulveda, D. J., McWalter, K., Begtrup, A., Crunk, A., Guillen Sacoto, M. J., Person, R., Schnur, R. E., Mancardi, M. M., Kreuder, F., Striano, P., Zara, F., Chung, W. K., Marks, W. A., van Eyk, C. L., Webber, D. L., Corbett, M. A., Harper, K., Berry, J. G., MacLennan, A. H., Gecz, J., Tartaglia, M., Salpietro, V., Christodoulou, J., Kaslin, J., Padilla-Lopez, S., Bilguvar, K., Munchau, A., Ahmed, Z. M., Hufnagel, R. B., Fahey, M. C., Maroofian, R., Houlden, H., Sticht, H., Mane, S. M., Rad, A., Vona, B., Jin, S. C., Haack, T. B., Makowski, C., Hirsch, Y., Riazuddin, S., Kruer, M. C., Zollino M. (ORCID:0000-0003-4871-9519), Marangi G. (ORCID:0000-0002-6898-8882), Richard, E. M., Bakhtiari, S., Marsh, A. P. L., Kaiyrzhanov, R., Wagner, M., Shetty, S., Pagnozzi, A., Nordlie, S. M., Guida, B. S., Cornejo, P., Magee, H., Liu, J., Norton, B. Y., Webster, R. I., Worgan, L., Hakonarson, H., Li, J., Guo, Y., Jain, M., Blesson, A., Rodan, L. H., Abbott, M. -A., Comi, A., Cohen, J. S., Alhaddad, B., Meitinger, T., Lenz, D., Ziegler, A., Kotzaeridou, U., Brunet, T., Chassevent, A., Smith-Hicks, C., Ekstein, J., Weiden, T., Hahn, A., Zharkinbekova, N., Turnpenny, P., Tucci, A., Yelton, M., Horvath, R., Gungor, S., Hiz, S., Oktay, Y., Lochmuller, H., Zollino, M., Morleo, M., Marangi, G., Nigro, V., Torella, A., Pinelli, M., Amenta, S., Husain, R. A., Grossmann, B., Rapp, M., Steen, C., Marquardt, I., Grimmel, M., Grasshoff, U., Korenke, G. C., Owczarek-Lipska, M., Neidhardt, J., Radio, F. C., Mancini, C., Claps Sepulveda, D. J., McWalter, K., Begtrup, A., Crunk, A., Guillen Sacoto, M. J., Person, R., Schnur, R. E., Mancardi, M. M., Kreuder, F., Striano, P., Zara, F., Chung, W. K., Marks, W. A., van Eyk, C. L., Webber, D. L., Corbett, M. A., Harper, K., Berry, J. G., MacLennan, A. H., Gecz, J., Tartaglia, M., Salpietro, V., Christodoulou, J., Kaslin, J., Padilla-Lopez, S., Bilguvar, K., Munchau, A., Ahmed, Z. M., Hufnagel, R. B., Fahey, M. C., Maroofian, R., Houlden, H., Sticht, H., Mane, S. M., Rad, A., Vona, B., Jin, S. C., Haack, T. B., Makowski, C., Hirsch, Y., Riazuddin, S., Kruer, M. C., Zollino M. (ORCID:0000-0003-4871-9519), and Marangi G. (ORCID:0000-0002-6898-8882)

Abstract

Spermatogenesis-associated 5 like 1 (SPATA5L1) represents an orphan gene encoding a protein of unknown function. We report 28 bi-allelic variants in SPATA5L1 associated with sensorineural hearing loss in 47 individuals from 28 (26 unrelated) families. In addition, 25/47 affected individuals (53%) presented with microcephaly, developmental delay/intellectual disability, cerebral palsy, and/or epilepsy. Modeling indicated damaging effect of variants on the protein, largely via destabilizing effects on protein domains. Brain imaging revealed diminished cerebral volume, thin corpus callosum, and periventricular leukomalacia, and quantitative volumetry demonstrated significantly diminished white matter volumes in several individuals. Immunofluorescent imaging in rat hippocampal neurons revealed localization of Spata5l1 in neuronal and glial cell nuclei and more prominent expression in neurons. In the rodent inner ear, Spata5l1 is expressed in the neurosensory hair cells and inner ear supporting cells. Transcriptomic analysis performed with fibroblasts from affected individuals was able to distinguish affected from controls by principal components. Analysis of differentially expressed genes and networks suggested a role for SPATA5L1 in cell surface adhesion receptor function, intracellular focal adhesions, and DNA replication and mitosis. Collectively, our results indicate that bi-allelic SPATA5L1 variants lead to a human disease characterized by sensorineural hearing loss (SNHL) with or without a nonprogressive mixed neurodevelopmental phenotype.

Published
2021

7. Polygenic burden in focal and generalized epilepsies

Author

Leu C., Stevelink R., Smith A. W., Goleva S. B., Kanai M., Ferguson L., Campbell C., Kamatani Y., Okada Y., Sisodiya S. M., Cavalleri G. L., Koeleman B. P. C., Lerche H., Jehi L., Davis L. K., Najm I. M., Palotie A., Daly M. J., Busch R. M., Lal D., Feng Y. -C. A., Howrigan D. P., Abbott L. E., Tashman K., Cerrato F., Churchhouse C., Gupta N., Neale B. M., Berkovic S. F., Goldstein D. B., Lowenstein D. H., Cossette P., Cotsapas C., De Jonghe P., Dixon-Salazar T., Guerrini R., Hakonarson H., Heinzen E. L., Helbig I., Kwan P., Marson A. G., Petrovski S., Kamalakaran S., Stewart R., Weckhuysen S., Depondt C., Dlugos D. J., Scheffer I. E., Striano P., Freyer C., Krause R., May P., McKenna K., Regan B. M., Bellows S. T., Bennett C. A., Johns E. M. C., Macdonald A., Shilling H., Burgess R., Weckhuysen D., Bahlo M., O'Brien T. J., Todaro M., Stamberger H., Andrade D. M., Sadoway T. R., Mo K., Krestel H., Gallati S., Papacostas S. S., Kousiappa I., Tanteles G. A., Sterbova K., Vlckova M., Sedlackova L., Lassuthova P., Klein K. M., Rosenow F., Reif P. S., Knake S., Kunz W. S., Zsurka G., Elger C. E., Bauer J., Rademacher M., Pendziwiat M., Muhle H., Rademacher A., Van Baalen A., Von Spiczak S., Stephani U., Afawi Z., Korczyn A. D., Kanaan M., Canavati C., Kurlemann G., Muller-Schluter K., Kluger G., Hausler M., Blatt I., Lemke J. R., Krey I., Weber Y. G., Wolking S., Becker F., Hengsbach C., Rau S., Maisch A. F., Steinhoff B. J., Schulze-Bonhage A., Schubert-Bast S., Schreiber H., Borggrafe I., Schankin C. J., Mayer T., Korinthenberg R., Brockmann K., Dennig D., Madeleyn R., Kalviainen R., Auvinen P., Saarela A., Linnankivi T., Lehesjoki A. -E., Rees M. I., Chung S. -K., Pickrell W. O., Powell R., Schneider N., Balestrini S., Zagaglia S., Braatz V., Johnson M. R., Auce P., Sills G. J., Baum L. W., Sham P. C., Cherny S. S., Lui C. H. T., Barisic N., Delanty N., Doherty C. P., Shukralla A., McCormack M., El-Naggar H., Canafoglia L., Franceschetti S., Castellotti B., Granata T., Zara F., Iacomino M., Madia F., Vari M. S., Mancardi M. M., Salpietro V., Bisulli F., Tinuper P., Licchetta L., Pippucci T., Stipa C., Muccioli L., Minardi R., Gambardella A., Labate A., Annesi G., Manna L., Gagliardi M., Parrini E., Mei D., Vetro A., Bianchini C., Montomoli M., Doccini V., Marini C., Suzuki T., Inoue Y., Yamakawa K., Birute T., Ruta M., Algirdas U., Ruta P., Jurgita G., Ruta S., Sadleir L. G., King C., Mountier E., Caglayan S. H., Arslan M., Yapici Z., Yis U., Topaloglu P., Kara B., Turkdogan D., Gundogdu-Eken A., Bebek N., Ugur-Iseri S., Baykan B., Salman B., Haryanyan G., Yucesan E., Kesim Y., Ozkara C., Sheidley B. R., Shain C., Poduri A., Buono R. J., Ferraro T. N., Sperling M. R., Lo W., Privitera M., French J. A., Schachter S., Kuzniecky R. I., Devinsky O., Hegde M., Khankhanian P., Helbig K. L., Ellis C. A., Spalletta G., Piras F., Gili T., Ciullo V., Leu C., Stevelink R., Smith A.W., Goleva S.B., Kanai M., Ferguson L., Campbell C., Kamatani Y., Okada Y., Sisodiya S.M., Cavalleri G.L., Koeleman B.P.C., Lerche H., Jehi L., Davis L.K., Najm I.M., Palotie A., Daly M.J., Busch R.M., Lal D., Feng Y.-C.A., Howrigan D.P., Abbott L.E., Tashman K., Cerrato F., Churchhouse C., Gupta N., Neale B.M., Berkovic S.F., Goldstein D.B., Lowenstein D.H., Cossette P., Cotsapas C., De Jonghe P., Dixon-Salazar T., Guerrini R., Hakonarson H., Heinzen E.L., Helbig I., Kwan P., Marson A.G., Petrovski S., Kamalakaran S., Stewart R., Weckhuysen S., Depondt C., Dlugos D.J., Scheffer I.E., Striano P., Freyer C., Krause R., May P., McKenna K., Regan B.M., Bellows S.T., Bennett C.A., Johns E.M.C., Macdonald A., Shilling H., Burgess R., Weckhuysen D., Bahlo M., O'Brien T.J., Todaro M., Stamberger H., Andrade D.M., Sadoway T.R., Mo K., Krestel H., Gallati S., Papacostas S.S., Kousiappa I., Tanteles G.A., Sterbova K., Vlckova M., Sedlackova L., Lassuthova P., Klein K.M., Rosenow F., Reif P.S., Knake S., Kunz W.S., Zsurka G., Elger C.E., Bauer J., Rademacher M., Pendziwiat M., Muhle H., Rademacher A., Van Baalen A., Von Spiczak S., Stephani U., Afawi Z., Korczyn A.D., Kanaan M., Canavati C., Kurlemann G., Muller-Schluter K., Kluger G., Hausler M., Blatt I., Lemke J.R., Krey I., Weber Y.G., Wolking S., Becker F., Hengsbach C., Rau S., Maisch A.F., Steinhoff B.J., Schulze-Bonhage A., Schubert-Bast S., Schreiber H., Borggrafe I., Schankin C.J., Mayer T., Korinthenberg R., Brockmann K., Dennig D., Madeleyn R., Kalviainen R., Auvinen P., Saarela A., Linnankivi T., Lehesjoki A.-E., Rees M.I., Chung S.-K., Pickrell W.O., Powell R., Schneider N., Balestrini S., Zagaglia S., Braatz V., Johnson M.R., Auce P., Sills G.J., Baum L.W., Sham P.C., Cherny S.S., Lui C.H.T., Barisic N., Delanty N., Doherty C.P., Shukralla A., McCormack M., El-Naggar H., Canafoglia L., Franceschetti S., Castellotti B., Granata T., Zara F., Iacomino M., Madia F., Vari M.S., Mancardi M.M., Salpietro V., Bisulli F., Tinuper P., Licchetta L., Pippucci T., Stipa C., Muccioli L., Minardi R., Gambardella A., Labate A., Annesi G., Manna L., Gagliardi M., Parrini E., Mei D., Vetro A., Bianchini C., Montomoli M., Doccini V., Marini C., Suzuki T., Inoue Y., Yamakawa K., Birute T., Ruta M., Algirdas U., Ruta P., Jurgita G., Ruta S., Sadleir L.G., King C., Mountier E., Caglayan S.H., Arslan M., Yapici Z., Yis U., Topaloglu P., Kara B., Turkdogan D., Gundogdu-Eken A., Bebek N., Ugur-Iseri S., Baykan B., Salman B., Haryanyan G., Yucesan E., Kesim Y., Ozkara C., Sheidley B.R., Shain C., Poduri A., Buono R.J., Ferraro T.N., Sperling M.R., Lo W., Privitera M., French J.A., Schachter S., Kuzniecky R.I., Devinsky O., Hegde M., Khankhanian P., Helbig K.L., Ellis C.A., Spalletta G., Piras F., Gili T., Ciullo V., Commission of the European Communities, Medical Research Council (MRC), Tumienė, Birutė, Mameniškienė, Rūta, Utkus, Algirdas, Praninskienė, Rūta, Grikinienė, Jurgita, Samaitienė-Aleknienė, Rūta, Centre of Excellence in Complex Disease Genetics, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, Genomics of Neurological and Neuropsychiatric Disorders, University of Helsinki, Helsinki Institute of Life Science HiLIFE, and Department of Medical and Clinical Genetics

Subjects
0301 basic medicine, Male, Multifactorial Inheritance, Epi25 Consortium, Databases, Factual, FEATURES, Genome-wide association study, Epilepsies, 3124 Neurology and psychiatry, Cohort Studies, Epilepsy, 0302 clinical medicine, Cost of Illness, 1ST SEIZURE, HISTORY, genetics, POPULATION, 11 Medical and Health Sciences, education.field_of_study, medicine.diagnostic_test, SCORES, Single Nucleotide, Biobank, 3. Good health, 17 Psychology and Cognitive Sciences, Genetic generalized epilepsy, Epilepsy, Generalized, Female, Partial, Cohort study, Human, medicine.medical_specialty, Population, European Continental Ancestry Group, Clinical Neurology, BIOBANK, Polymorphism, Single Nucleotide, epilepsy, genetic generalized epilepsy, common variant risk, Databases, 03 medical and health sciences, Genetic, Internal medicine, medicine, Journal Article, Genetics, Humans, Genetic Predisposition to Disease, Polymorphism, GENOME-WIDE ASSOCIATION, Generalized epilepsy, education, SEIZURE RECURRENCE, Factual, METAANALYSIS, Genetic testing, Neurology & Neurosurgery, RISK PREDICTION, Generalized, business.industry, 3112 Neurosciences, Common variant risk, Genetic Variation, Original Articles, medicine.disease, Comorbidity, Cost of Illne, Epilepsies, Partial, Genome-Wide Association Study, 030104 developmental biology, Neurology (clinical), Cohort Studie, business, 030217 neurology & neurosurgery
Abstract

See Hansen and Møller (doi:10.1093/brain/awz318) for a scientific commentary on this article. Using polygenic risk scores from a genome-wide association study in generalized and focal epilepsy, Leu et al. reveal a significantly higher genetic burden for epilepsy in multiple cohorts of people with epilepsy compared to population controls. Quantification of common variant burden may be valuable for epilepsy prognosis and treatment., Rare genetic variants can cause epilepsy, and genetic testing has been widely adopted for severe, paediatric-onset epilepsies. The phenotypic consequences of common genetic risk burden for epilepsies and their potential future clinical applications have not yet been determined. Using polygenic risk scores (PRS) from a European-ancestry genome-wide association study in generalized and focal epilepsy, we quantified common genetic burden in patients with generalized epilepsy (GE-PRS) or focal epilepsy (FE-PRS) from two independent non-Finnish European cohorts (Epi25 Consortium, n = 5705; Cleveland Clinic Epilepsy Center, n = 620; both compared to 20 435 controls). One Finnish-ancestry population isolate (Finnish-ancestry Epi25, n = 449; compared to 1559 controls), two European-ancestry biobanks (UK Biobank, n = 383 656; Vanderbilt biorepository, n = 49 494), and one Japanese-ancestry biobank (BioBank Japan, n = 168 680) were used for additional replications. Across 8386 patients with epilepsy and 622 212 population controls, we found and replicated significantly higher GE-PRS in patients with generalized epilepsy of European-ancestry compared to patients with focal epilepsy (Epi25: P = 1.64×10−15; Cleveland: P = 2.85×10−4; Finnish-ancestry Epi25: P = 1.80×10−4) or population controls (Epi25: P = 2.35×10−70; Cleveland: P = 1.43×10−7; Finnish-ancestry Epi25: P = 3.11×10−4; UK Biobank and Vanderbilt biorepository meta-analysis: P = 7.99×10−4). FE-PRS were significantly higher in patients with focal epilepsy compared to controls in the non-Finnish, non-biobank cohorts (Epi25: P = 5.74×10−19; Cleveland: P = 1.69×10−6). European ancestry-derived PRS did not predict generalized epilepsy or focal epilepsy in Japanese-ancestry individuals. Finally, we observed a significant 4.6-fold and a 4.5-fold enrichment of patients with generalized epilepsy compared to controls in the top 0.5% highest GE-PRS of the two non-Finnish European cohorts (Epi25: P = 2.60×10−15; Cleveland: P = 1.39×10−2). We conclude that common variant risk associated with epilepsy is significantly enriched in multiple cohorts of patients with epilepsy compared to controls—in particular for generalized epilepsy. As sample sizes and PRS accuracy continue to increase with further common variant discovery, PRS could complement established clinical biomarkers and augment genetic testing for patient classification, comorbidity research, and potentially targeted treatment.

Published
2019
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9. Inv dup (15): Clinical and electroencephalographic features in three cases

Author

Coppola, A., Pintaudi, M., Striano, P., Mancardi, M. M., Baglietto, M. L., Cavani, S., Cuoco, C., Gaggero, R., Zara, F., Striano, S., Coppola, A., Pintaudi, M., Striano, P., Mancardi, M. M., Baglietto, M. L., Cavani, S., Cuoco, C., Gaggero, R., Zara, F., and Striano, S.

Published
2006

10. TBC1D24 genotype-phenotype correlation: epilepsies and other neurologic features

Author

Karabey, Hülya Kayserili (ORCID 0000-0003-0376-499X & YÖK ID 7945), Balestrini, S.; Milh, M.; Castiglioni, C.; Luthy, K.; Finelli, M. J.; Verstreken, P.; Cardon, A.; Strazisar, B. G.; Holder, J. L.; Lesca, G.; Mancardi, M. M.; Poulat, A. L.; Repetto, G. M.; Banka, S.; Bilo, L.; Birkeland, L. E.; Bosch, F.; Brockmann, K.; Cross, J. H.; Doummar, D.; Felix, T. M.; Giuliano, F.; Hori, M.; Huning, I.; Kayserili, H.; Kini, U.; Lees, M. M.; Meenakshi, G.; Mewasingh, L.; Pagnamenta, A. T.; Peluso, S.; Mey, A.; Rice, G. M.; Rosenfeld, J. A.; Taylor, J. C.; Troester, M. M.; Stanley, C. M.; Ville, D.; Walkiewicz, M.; Falace, A.; Fassio, A.; Lemke, J. R.; Biskup, S.; Tardif, J.; Ajeawung, N. F.; Tolun, A.; Corbett, M.; Gecz, J.; Afawi, Z.; Howell, K. B.; Oliver, K. L.; Berkovic, S. F.; Scheffer, I. E.; de Falco, F. A.; Oliver, P. L.; Striano, P.; Zara, F.; Campeau, P. M.; Sisodiya, S. M., School of Medicine, Department of Medical Genetics, Karabey, Hülya Kayserili (ORCID 0000-0003-0376-499X & YÖK ID 7945), Balestrini, S.; Milh, M.; Castiglioni, C.; Luthy, K.; Finelli, M. J.; Verstreken, P.; Cardon, A.; Strazisar, B. G.; Holder, J. L.; Lesca, G.; Mancardi, M. M.; Poulat, A. L.; Repetto, G. M.; Banka, S.; Bilo, L.; Birkeland, L. E.; Bosch, F.; Brockmann, K.; Cross, J. H.; Doummar, D.; Felix, T. M.; Giuliano, F.; Hori, M.; Huning, I.; Kayserili, H.; Kini, U.; Lees, M. M.; Meenakshi, G.; Mewasingh, L.; Pagnamenta, A. T.; Peluso, S.; Mey, A.; Rice, G. M.; Rosenfeld, J. A.; Taylor, J. C.; Troester, M. M.; Stanley, C. M.; Ville, D.; Walkiewicz, M.; Falace, A.; Fassio, A.; Lemke, J. R.; Biskup, S.; Tardif, J.; Ajeawung, N. F.; Tolun, A.; Corbett, M.; Gecz, J.; Afawi, Z.; Howell, K. B.; Oliver, K. L.; Berkovic, S. F.; Scheffer, I. E.; de Falco, F. A.; Oliver, P. L.; Striano, P.; Zara, F.; Campeau, P. M.; Sisodiya, S. M., School of Medicine, and Department of Medical Genetics

Abstract

Objective: To evaluate the phenotypic spectrum associated with mutations in TBC1D24. Methods: We acquired new clinical, EEG, and neuroimaging data of 11 previously unreported and 37 published patients. TBC1D24 mutations, identified through various sequencing methods, can be found online (http://lovd.nl/TBC1D24). Results: Forty-eight patients were included (28 men, 20 women, average age 21 years) from 30 independent families. Eighteen patients (38%) had myoclonic epilepsies. The other patients carried diagnoses of focal (25%), multifocal (2%), generalized (4%), and unclassified epilepsy (6%), and early-onset epileptic encephalopathy (25%). Most patients had drug-resistant epilepsy. We detail EEG, neuroimaging, developmental, and cognitive features, treatment responsiveness, and physical examination. In silico evaluation revealed 7 different highly conserved motifs, with the most common pathogenic mutation located in the first. Neuronal outgrowth assays showed that some TBC1D24 mutations, associated with the most severe TBC1D24-associated disorders, are not necessarily the most disruptive to this gene function. Conclusions: TBC1D24-related epilepsy syndromes show marked phenotypic pleiotropy, with multisystem involvement and severity spectrum ranging from isolated deafness (not studied here), benign myoclonic epilepsy restricted to childhood with complete seizure control and normal intellect, to early-onset epileptic encephalopathy with severe developmental delay and early death. There is no distinct correlation with mutation type or location yet, but patterns are emerging. Given the phenotypic breadth observed, TBC1D24 mutation screening is indicated in a wide variety of epilepsies. A TBC1D24 consortium was formed to develop further research on this gene and its associated phenotypes., NIHR Biomedical Research Centres; Polytechnic University of Marche, Italy; Wellcome Trust; BAEF fellowship; NHMRC; Department of Health's National Institute for Health Research Biomedical Research Centres funding scheme; Gustave Nossal NHMRC postgraduate scholarship; Clifford PhD scholarship; Fondation CHU Sainte-Justine; Canadian Institutes of Health Research (CIHR); Fonds de Recherche Sante Quebec; European Research Council under the European Union; National Institute for Health Research

Published
2016

11. Encefalite da anticorpi anti-NMDAR in età pediatrica: dati preliminari del Gruppo di Lavoro Italiano sulle Encefaliti da Anticorpi anti-NMDAR

Author

Sartori, Stefano, Nosadini, Margherita, Toldo, Irene, Pelizza, M. F., Boniver, Clementina, Zamponi, N., Dilena, R., Cappellari, A., Cantalupo, G., Dalla Bernardina, B., Falsaperla, R., Giunta, L., Serino, D., Vigevano, F., Mancardi, M. M., Biancheri, R., Santangelo, G., Natali Sora, M. G., Pruna, D., Cesaroni, E., and Suppiej, Agnese

Published
2014

15. An open-label trial of levetiracetam in severe myoclonic epilepsy of infancy

Author

Striano, P., primary, Coppola, A., additional, Pezzella, M., additional, Ciampa, C., additional, Specchio, N., additional, Ragona, F., additional, Mancardi, M. M., additional, Gennaro, E., additional, Beccaria, F., additional, Capovilla, G., additional, Rasmini, P., additional, Besana, D., additional, Coppola, G. G., additional, Elia, M., additional, Granata, T., additional, Vecchi, M., additional, Vigevano, F., additional, Viri, M., additional, Gaggero, R., additional, Striano, S., additional, and Zara, F., additional

Published
2007
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24. Bi-allelic variants in SPATA5L1 lead to intellectual disability, spastic-dystonic cerebral palsy, epilepsy, and hearing loss

Author

Serdal Güngör, Benita Grossmann, Bethany Y. Norton, Zubair M. Ahmed, Wendy K. Chung, John Neidhardt, Julie S. Cohen, Elodie Richard, Yoel Hirsch, Jiankang Li, Jozef Gecz, Ralf A. Husain, Saima Riazuddin, Maria J. Guillen Sacoto, Claudia Steen, Andreas Ziegler, G. Christoph Korenke, Dominic Lenz, Mahim Jain, Urania Kotzaeridou, Henry Houlden, Theresa Brunet, Yavuz Oktay, Semra Hiz, Patricia Cornejo, Sheetal Shetty, Alastair H. MacLennan, Nazira Zharkinbekova, Bader Alhaddad, Dani L. Webber, Mary Alice Abbott, Hanns Lochmüller, Rauan Kaiyrzhanov, Melissa Yelton, Cecilia Mancini, Hakon Hakonarson, Amy Crunk, Simona Amenta, Yiran Guo, Jan Kaslin, Clare L. van Eyk, Richard Webster, Arianna Tucci, Alex M. Pagnozzi, Robert B. Hufnagel, Kirsty McWalter, Sandra M. Nordlie, Kaya Bilguvar, Pasquale Striano, Matias Wagner, Florian Kreuder, Lisa Worgan, Ashley P.L. Marsh, Anna Chassevent, Warren A. Marks, James Liu, Brandon S. Guida, Maria Margherita Mancardi, Kelly Harper, Lance H. Rodan, Rhonda E. Schnur, Dianela Judith Claps Sepulveda, Tzvi Weiden, Michele Pinelli, Marion Rapp, Helen Magee, Jesia G. Berry, Aboulfazl Rad, Michael C. Kruer, Mark A. Corbett, Rita Horvath, Constance Smith-Hicks, Joseph Ekstein, Marta Owczarek-Lipska, Somayeh Bakhtiari, Heinrich Sticht, Thomas Meitinger, Anne M. Comi, Alyssa Blesson, Iris Marquardt, Francesca Clementina Radio, Sergio Padilla-Lopez, Giuseppe Marangi, Christine Makowski, Mona Grimmel, Marco Tartaglia, Sheng Chih Jin, Federico Zara, Andreas Hahn, Shrikant Mane, Michael C Fahey, Marcella Zollino, Barbara Vona, Peter D. Turnpenny, Manuela Morleo, Ute Grasshoff, Amber Begtrup, Richard E. Person, Annalaura Torella, Alexander Münchau, Vincenzo Nigro, Reza Maroofian, John Christodoulou, Tobias B. Haack, Vincenzo Salpietro, Richard, E. M., Bakhtiari, S., Marsh, A. P. L., Kaiyrzhanov, R., Wagner, M., Shetty, S., Pagnozzi, A., Nordlie, S. M., Guida, B. S., Cornejo, P., Magee, H., Liu, J., Norton, B. Y., Webster, R. I., Worgan, L., Hakonarson, H., Li, J., Guo, Y., Jain, M., Blesson, A., Rodan, L. H., Abbott, M. -A., Comi, A., Cohen, J. S., Alhaddad, B., Meitinger, T., Lenz, D., Ziegler, A., Kotzaeridou, U., Brunet, T., Chassevent, A., Smith-Hicks, C., Ekstein, J., Weiden, T., Hahn, A., Zharkinbekova, N., Turnpenny, P., Tucci, A., Yelton, M., Horvath, R., Gungor, S., Hiz, S., Oktay, Y., Lochmuller, H., Zollino, M., Morleo, M., Marangi, G., Nigro, V., Torella, A., Pinelli, M., Amenta, S., Husain, R. A., Grossmann, B., Rapp, M., Steen, C., Marquardt, I., Grimmel, M., Grasshoff, U., Korenke, G. C., Owczarek-Lipska, M., Neidhardt, J., Radio, F. C., Mancini, C., Claps Sepulveda, D. J., Mcwalter, K., Begtrup, A., Crunk, A., Guillen Sacoto, M. J., Person, R., Schnur, R. E., Mancardi, M. M., Kreuder, F., Striano, P., Zara, F., Chung, W. K., Marks, W. A., van Eyk, C. L., Webber, D. L., Corbett, M. A., Harper, K., Berry, J. G., Maclennan, A. H., Gecz, J., Tartaglia, M., Salpietro, V., Christodoulou, J., Kaslin, J., Padilla-Lopez, S., Bilguvar, K., Munchau, A., Ahmed, Z. M., Hufnagel, R. B., Fahey, M. C., Maroofian, R., Houlden, H., Sticht, H., Mane, S. M., Rad, A., Vona, B., Jin, S. C., Haack, T. B., Makowski, C., Hirsch, Y., Riazuddin, S., and Kruer, M. C.

Subjects
Male, Microcephaly, Pathology, Settore MED/03 - GENETICA MEDICA, sensorineural hearing loss, Epilepsy, Neurodevelopmental disorder, sensorineural hearing lo, Genetics (clinical), Allele, ATPases Associated with Diverse Cellular Activitie, medicine.anatomical_structure, Muscle Spasticity, Child, Preschool, Sensorineural hearing loss, Female, movement disorder, medicine.symptom, AAA+ superfamily, Human, Adult, medicine.medical_specialty, Adolescent, Hearing loss, Aaa+ Superfamily, Atpase, Spata5l1, Cerebral Palsy, Intellectual Disability, Movement Disorder, Neurodevelopmental Disorder, Sensorineural Hearing Loss, Biology, Cerebral palsy, White matter, Young Adult, Report, Genetics, medicine, Animals, Humans, ATPase, Genetic Predisposition to Disease, Hearing Loss, SPATA5L1, Hearing Lo, Alleles, cerebral palsy, Periventricular leukomalacia, Animal, Infant, Newborn, Infant, Genetic Variation, medicine.disease, neurodevelopmental disorder, Rats, ATPases Associated with Diverse Cellular Activities, Rat
Abstract

Spermatogenesis-associated 5 like 1 (SPATA5L1) represents an orphan gene encoding a protein of unknown function. We report 28 bi-allelic variants in SPATA5L1 associated with sensorineural hearing loss in 47 individuals from 28 (26 unrelated) families. In addition, 25/47 affected individuals (53%) presented with microcephaly, developmental delay/intellectual disability, cerebral palsy, and/or epilepsy. Modeling indicated damaging effect of variants on the protein, largely via destabilizing effects on protein domains. Brain imaging revealed diminished cerebral volume, thin corpus callosum, and periventricular leukomalacia, and quantitative volumetry demonstrated significantly diminished white matter volumes in several individuals. Immunofluorescent imaging in rat hippocampal neurons revealed localization of Spata511 in neuronal and glial cell nuclei and more prominent expression in neurons. In the rodent inner ear, Spata511 is expressed in the neurosensory hair cells and inner ear supporting cells. Transcriptomic analysis performed with fibroblasts from affected individuals was able to distinguish affected from controls by principal components. Analysis of differentially expressed genes and networks suggested a role for SPATA5L1 in cell surface adhesion receptor function, intracellular focal adhesions, and DNA replication and mitosis. Collectively, our results indicate that bi-allelic SPATA5L1 variants lead to a human disease characterized by sensorineural hearing loss (SNHL) with or without a nonprogressive mixed neurodevelopmental phenotype.

Published
2021

25. Migrating focal seizures in Autosomal Dominant Sleep-related Hypermotor Epilepsy with KCNT1 mutation

Author

Romina Combi, Patrizia De Marco, Matteo Cataldi, Federico Zara, Lino Nobili, Thea Giacomini, Giulia Prato, Valeria Capra, Maria Margherita Mancardi, Luigi Ferini-Strambi, Cataldi, M., Nobili, L., Zara, F., Combi, R., Prato, G., Giacomini, T., Capra, V., De Marco, P., Ferini-Strambi, L., Mancardi, M. M., Cataldi, M, Nobili, L, Zara, F, Combi, R, Prato, G, Giacomini, T, Capra, V, De Marco, P, Ferini-Strambi, L, and Mancardi, M

Subjects
Male, Parasomnias, Nerve Tissue Proteins, Focal seizure, KCNT1 gene, Migrating seizure, Sleep-related hypermotor epilepsy, Potassium Channels, Sodium-Activated, Bioinformatics, Epilepsy, Medicine, Humans, business.industry, BIO/13 - BIOLOGIA APPLICATA, General Medicine, medicine.disease, Sleep in non-human animals, Pedigree, Neurology, Child, Preschool, Mutation (genetic algorithm), Mutation, Neurology (clinical), Epilepsies, Partial, business
Published
2019

26. Brain MRI findings in severe myoclonic epilepsy in infancy and genotype-phenotype correlations

Author

Davide Mei, Carla Marini, Giuseppe Capovilla, Laura Siri, Maria Margherita Mancardi, Francesca Darra, Francesca Ragona, Francesca Longaretti, Maurizio Elia, Roberta Biancheri, Federico Zara, Charlotte Dravet, Fabio Tortora, Nicola Specchio, Giuseppe Gobbi, Antonino Romeo, Lucio Giordano, Elena Gennaro, Tiziana Granata, Renzo Guerrini, Francesca Beccaria, Carlo Minetti, Federico Vigevano, Andrea Rossi, Roberto Gaggero, Salvatore Striano, Bernardo Dalla Bernardina, Pasquale Striano, Roberta Paravidino, Francesca Madia, Striano, P., Mancardi, M. M., Biancheri, R., Madia, F., Gennaro, E., Paravidino, R., Beccaria, F., Capovilla, G., Bernardina, B. D., Darra, F., Elia, M., Giordano, L., Gobbi, G., Granata, T., Ragona, F., Guerrini, R., Marini, C., Mei, D., Longaretti, F., Romeo, A., Siri, L., Specchio, N., Vigevano, F., Striano, Salvatore, Tortora, F., Rossi, A., Minetti, C., Dravet, C., Gaggero, R., Zara, F., Striano, P, Mancardi, Mm, Biancheri, R, Madia, F, Gennaro, E, Paravidino, R, Beccaria, F, Capovilla, G, DALLA BERNARDINA, B, Darra, F, Elia, M, Giordano, L, Gobbi, G, Granata, T, Ragona, F, Guerrini, R, Marini, C, Mei, D, Longaretti, F, Romeo, A, Siri, L, Specchio, N, Vigevano, F, Tortora, F, Rossi, A, Minetti, C, Dravet, C, Gaggero, R, Bernardina, Bd, Striano, S, and Tortora, Fabio

Subjects
Male, Pathology, pathology, Child, Child, pathology, Humans, Infant, Magnetic Resonance Imaging, Epilepsies, Myoclonic, Epilepsies, Hippocampus, Severity of Illness Index, Sodium Channels, Epilepsy, genetics, Child, Chromatography, High Pressure Liquid, Chromatography, Brain, Syndrome, Magnetic Resonance Imaging, statistics /&/ numerical data, Phenotype, Neurology, Child, Preschool, High Pressure Liquid, Cerebellar atrophy, Female, diagnosis/genetics/pathology, Female, Genotype, Hippocampu, genetics, Nerve Tissue Protein, MRI, Adult, genetics, Syndrome, medicine.medical_specialty, Adolescent, Genotype, Nerve Tissue Proteins, Preschool, Chromatography, High Pressure Liquid, Epilepsie, Central nervous system disease, Atrophy, Dravet syndrome, medicine, Humans, Preschool, Adolescent, Adult, Brain, Retrospective Studies, Hippocampal sclerosis, business.industry, statistics /&/ numerical data, Male, Mutation, Infant, Cortical dysplasia, medicine.disease, NAV1.1 Voltage-Gated Sodium Channel, High Pressure Liquid, Epilepsies, Myoclonic, diagnosis/genetics/pathology, Female, Genotype, Hippocampus, genetics, Nerve Tissue Proteins, genetics, Phenotype, Retrospective Studies, Severity of Illness Index, Sodium Channels, Mutation, Myoclonic epilepsy, pathology, Neurology (clinical), business, diagnosis/genetics/pathology, genetics, Phenotype, Retrospective Studies, Severity of Illness Index, Sodium Channel
Abstract

Summary: Introduction: To determine the occurrence of neuroradiological abnormalities and to perform genotype–phenotype correlations in severe myoclonic epilepsy of infancy (SMEI, Dravet syndrome). Patients and Methods: Alpha-subunit type A of voltage-gated sodium channel (SCN1A) mutational screening was performed by denaturing high-performance liquid chromatography (DHPLC) and multiplex ligation probe amplification (MLPA). MRI inclusion criteria were: last examination obtained after the age of 4 years on 1.5-T systems; hippocampal cuts acquired perpendicular to the long axis of the hippocampus; qualitative assessment was performed on T1-weighted, T2-weighted, proton density, and 1–3 mm thick coronal FLAIR images. Results: We collected 58 SMEI patients in whom last MRI was performed at or later than 4 years of age. SCN1A mutations occurred in 35 (60%) cases. Thirteen (22.4%) out of 58 patients showed abnormal MRIs. Eight patients showed cortical brain atrophy of which 3 associated to ventricles abnormalities, 1 to cerebellar atrophy, 1 to white matter hyperintensity; 3 patients had ventricles enlargement only; 1 patient showed hippocampal sclerosis (HS); 1 had focal cortical dysplasia. Genotype–phenotype analysis indicated that abnormal MRIs occurred more frequently in patients without SCN1A mutations (9/23; 39.1%) compared to those carrying SCN1A mutations (4/35; 11.4%) (p = 0.02). Conclusion: Different brain abnormalities may occur in SMEI. Only one case with HS was observed; thus, our study does not support the association between prolonged febrile seizures and HS in SMEI. Abnormal MRIs were significantly more frequent in patients without SCN1A mutations. Prospective MRI studies will assess the etiological role of the changes observed in these patients.

Published
2007

27. Noninvasive Assessment of Hemodynamic Stress Distribution after Indirect Revascularization for Pediatric Moyamoya Vasculopathy.

Author

Tortora D, Severino M, Pacetti M, Morana G, Mancardi MM, Capra V, Cama A, Pavanello M, and Rossi A

Subjects
Adolescent, Cerebral Angiography, Cerebral Revascularization methods, Child, Child, Preschool, Female, Humans, Infant, Male, Perfusion Imaging methods, Postoperative Period, Retrospective Studies, Treatment Outcome, Cerebrovascular Circulation, Hemodynamics, Moyamoya Disease diagnostic imaging, Moyamoya Disease surgery, Neuroimaging methods
Abstract

Background and Purpose: Indirect revascularization surgery is an effective treatment in children with Moyamoya vasculopathy. In the present study, we hypothesized that DSC-PWI may reliably assess the evolution of CBF-related parameters after revascularization surgery, monitoring the outcome of surgical pediatric patients with Moyamoya vasculopathy. Thus, we aimed to evaluate differences in DSC-PWI parameters, including the hemodynamic stress distribution, in surgical and nonsurgical children with Moyamoya vasculopathy and to correlate them with long-term postoperative outcome., Materials and Methods: Pre- and postoperative DSC parameters of 28 patients (16 females; mean age, 5.5 ± 4.8 years) treated with indirect revascularization were compared with those obtained at 2 time points in 10 nonsurgical patients (6 females; mean age, 6.9 ± 4.7 years). We calculated 4 normalized CBF-related parameters and their percentage variance: mean normalized CBF of the MCA territory, mean normalized CBF of the proximal MCA territory, mean normalized CBF of cortical the MCA territory, and hemodynamic stress distribution. The relationship between perfusion parameters and postoperative outcomes (poor, fair, good, excellent) was explored using 1-way analysis of covariance ( P < .05)., Results: A significant decrease of the mean normalized CBF of the proximal MCA territory and hemodynamic stress distribution and an increase of the mean normalized CBF of the cortical MCA territory were observed after revascularization surgery ( P < .001). No variations were observed in nonsurgical children. Postoperative hemodynamic stress distribution and its percentage change were significantly different in outcome groups ( P < .001)., Conclusions: DSC-PWI indices show postoperative hemodynamic changes that correlate with clinical outcome after revascularization surgery in children with Moyamoya disease., (© 2018 by American Journal of Neuroradiology.)

Published
2018
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28. Anti-NMDAR encephalitis misdiagnosed as Hashimoto's encephalopathy.

Author

Mirabelli-Badenier M, Biancheri R, Morana G, Fornarino S, Siri L, Celle ME, Veneselli E, Vincent A, Gaggero R, and Mancardi MM

Subjects
Adolescent, Anti-N-Methyl-D-Aspartate Receptor Encephalitis drug therapy, Anti-N-Methyl-D-Aspartate Receptor Encephalitis physiopathology, Brain Diseases diagnosis, Brain Diseases drug therapy, Electroencephalography, Encephalitis, Female, Hashimoto Disease diagnosis, Hashimoto Disease drug therapy, Humans, Immunoglobulins, Intravenous administration & dosage, Immunologic Factors administration & dosage, Magnetic Resonance Imaging, Treatment Outcome, Anti-N-Methyl-D-Aspartate Receptor Encephalitis diagnosis, Diagnostic Errors, Immunoglobulins, Intravenous pharmacology, Immunologic Factors pharmacology
Abstract

Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a well-defined autoimmune disorder. Hashimoto's encephalopathy (HE) is a still controversial entity, lacking definite diagnostic criteria. We described a 14-year-old-girl presenting with a clinical picture consistent with the diagnosis of anti-NMDAR encephalitis, confirmed by NMDAR antibody testing. Four years earlier, she had presented a similar episode of acute encephalopathy diagnosed as HE. Anti-NMDAR encephalitis and HE share similar clinical features so that the differential diagnosis can be difficult if specific antibodies are not tested. The correct diagnosis of anti-NMDAR encephalitis is crucial to plan the appropriate management and follow-up, namely in term of oncological screening, since it can be paraneoplastic in origin. We suggest to re-evaluate the clinical history of all subjects with previous HE diagnosis in order to evaluate the possible diagnosis of anti-NMDAR encephalitis and plan the appropriate management of these patients., (Copyright © 2013 European Paediatric Neurology Society. Published by Elsevier Ltd. All rights reserved.)

Published
2014
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