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5 results on '"Wierenga, K.J."'

1. PURA-Related Developmental and Epileptic Encephalopathy

Author

Johannesen, K.M., Gardella, E., Gjerulfsen, C.E., Bayat, A., Rouhl, R.P.W., Reijnders, M., Whalen, S., Keren, B., Buratti, J., Courtin, T., Wierenga, K.J., Isidor, B., Piton, A., Faivre, L., Garde, A., Moutton, S., Tran-Mau-Them, F., Denomme-Pichon, A.S., Coubes, C., Larson, A., Esser, M.J., Appendino, J.P., Al-Hertani, W., Gamboni, B., Mampel, A., Mayorga, L., Orsini, A., Bonuccelli, A., Suppiej, A., Van-Gils, J., Vogt, J., Damioli, S., Giordano, L., Moortgat, S., Wirrell, E., Hicks, S., Kini, U., Noble, N., Stewart, H., Asakar, S., Cohen, J.S., Naidu, S.R., Collier, A., Brilstra, E.H., Li, M.H., Brew, C., Bigoni, S., Ognibene, D., Ballardini, E., Ruivenkamp, C., RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, Klinische Neurowetenschappen, MUMC+: MA Med Staf Spec Neurologie (9), and MUMC+: DA KG Polikliniek (9)

Subjects
ALPHA, DELINEATION, EPILEPSIES, DE-NOVO MUTATIONS, MORTALITY, FEATURES, PHENOTYPE, CLASSIFICATION, POSTNATAL BRAIN-DEVELOPMENT
Abstract

Background and ObjectivesPurine-rich element-binding protein A (PURA) gene encodes Pur-alpha, a conserved protein essential for normal postnatal brain development. Recently, a PURA syndrome characterized by intellectual disability, hypotonia, epilepsy, and dysmorphic features was suggested. The aim of this study was to define and expand the phenotypic spectrum of PURA syndrome by collecting data, including EEG, from a large cohort of affected patients.MethodsData on unpublished and published cases were collected through the PURA Syndrome Foundation and the literature. Data on clinical, genetic, neuroimaging, and neurophysiologic features were obtained.ResultsA cohort of 142 patients was included. Characteristics of the PURA syndrome included neonatal hypotonia, feeding difficulties, and respiratory distress. Sixty percent of the patients developed epilepsy with myoclonic, generalized tonic-clonic, focal seizures, and/or epileptic spasms. EEG showed generalized, multifocal, or focal epileptic abnormalities. Lennox-Gastaut was the most common epilepsy syndrome. Drug refractoriness was common: 33.3% achieved seizure freedom. We found 97 pathogenic variants in PURA without any clear genotype-phenotype associations.DiscussionThe PURA syndrome presents with a developmental and epileptic encephalopathy with characteristics recognizable from neonatal age, which should prompt genetic screening. Sixty percent have drug-resistant epilepsy with focal or generalized seizures. We collected more than 90 pathogenic variants without observing overt genotype-phenotype associations.

Published
2021

2. Histone H3.3 beyond cancer: Germline mutations in Histone 3 Family 3A and 3B cause a previously unidentified neurodegenerative disorder in 46 patients

Author

Bryant, L. (Laura), Li, D. (Dong), Cox, S.G. (Samuel G.), Marchione, D. (Dylan), Joiner, E.F. (Evan F.), Wilson, K. (Khadija), Janssen, K. (Kevin), Lee, P. (Pearl), March, K. (Keith), Nair, D. (Divya), Sherr, E. (Elliott), Fregeau, B. (Brieana), Wierenga, K.J. (Klaas J.), Wadley, A. (Alexandrea), Mancini, G.M.S. (Grazia), Powell-Hamilton, N. (Nina), Kamp, J.J.P. (Jacques) van de, Grebe, T. (Theresa), Dean, J. (John), Ross, A.J. (Alison), Crawford, H.P. (Heather P.), Powis, Z. (Zoe), Cho, M.T. (Megan T.), Willing, M.C. (Marcia C.), Manwaring, L. (Linda), Schot, R. (Rachel), Nava, C. (Caroline), Afenjar, A. (Alexandra), Lessel, D. (Davor), Wagner, M. (Matias), Klopstock, T. (Thomas), Winkelmann, B., Catarino, C.B. (Claudia B.), Retterer, K. (Kyle), Schuette, J.L. (Jane L.), Innis, J.W. (Jeffrey), Pizzino, A. (Amy), Lüttgen, S. (Sabine), Denecke, J. (Jonas), Strom, T.M. (Tim), Monaghan, K.G. (Kristin G.), Yuan, Z.-F. (Zuo-Fei), Dubbs, H. (Holly), Bend, R. (Renee), Lee, J.A. (Jennifer A.), Lyons, M.J. (Michael J.), Hoefele, J. (Julia), Günthner, R. (Roman), Reutter, H. (Heiko), Keren, B. (Boris), Radtke, K. (Kelly), Sherbini, O. (Omar), Mrokse, C. (Cameron), Helbig, K.L. (Katherine L.), Odent, S. (Sylvie), Cogne, B. (Benjamin), Mercier, S. (Sandra), Bezieau, S. (Stephane), Besnard, T. (Thomas), Kury, S. (Sebastien), Redon, R. (Richard), Reinson, K. (Karit), Wojcik, M.H. (Monica H.), Õunap, K. (Katrin), Ilves, P. (Pilvi), Innes, A.M. (A Micheil), Kernohan, K.D. (Kristin), Costain, G. (Gregory), Meyn, M.S. (M Stephen), Chitayat, D. (David), Zackai, E. (Elaine), Lehman, A. (Anna), Kitson, H. (Hilary), Martin, M.G. (Martin G.), Martinez-Agosto, J.A. (Julian A.), Nelson, S.F. (Stan F.), Palmer, C.G.S. (Christina G S), Papp, J.C. (Jeanette C.), Parker, N.H. (Neil H.), Sinsheimer, J.S. (Janet S.), Vilain, E. (Eric), Wan, J. (Jijun), Yoon, A.J. (Amanda J.), Zheng, A. (Allison), Brimble, E. (Elise), Ferrero, G.B. (Giovanni Battista), Radio, F.C. (Francesca Clementina), Carli, D. (Diana), Barresi, S. (Sabina), Brusco, A. (Alfredo), Tartaglia, M. (Marco), Thomas, J.M. (Jennifer Muncy), Umana, L. (Luis), Weiss, M.M. (Marjan M.), Gotway, G. (Garrett), Stuurman, K.E. (Kyra), Thompson, M.L. (Michelle L.), McWalter, K. (Kirsty), Stumpel, C.T.R.M. (Constance T R M), Stevens, S.J.C. (Servi J C), Stegmann, A.P.A. (Alexander P A), Tveten, K. (Kristian), Vøllo, A. (Arve), Prescott, T. (Trine), Fagerberg, C. (Christina), Laulund, L.W. (Lone Walentin), Larsen, M.J. (Martin J.), Byler, M. (Melissa), Lebel, R.R. (Robert Roger), Hurst, A.C. (Anna C.), Dean, J. (Joy), Schrier Vergano, S.A. (Samantha A.), Norman, J. (Jennifer), Mercimek-Andrews, S. (Saadet), Neira, J. (Juanita), Van Allen, M.I. (Margot I.), Longo, N. (Nicola), Sellars, E. (Elizabeth), Louie, R.J. (Raymond J.), Cathey, S.S. (Sara S.), Brokamp, E. (Elly), Héron, D. (Delphine), Snyder, M. (Molly), Vanderver, A. (Adeline), Simon, C. (Celeste), de la Cruz, X. (Xavier), Padilla, N. (Natália), Crump, J.G. (J Gage), Chung, W. (Wendy), Garcia, B. (Benjamin), Hakonarson, H. (Hakon), Bhoj, E.J. (Elizabeth J.), Bryant, L. (Laura), Li, D. (Dong), Cox, S.G. (Samuel G.), Marchione, D. (Dylan), Joiner, E.F. (Evan F.), Wilson, K. (Khadija), Janssen, K. (Kevin), Lee, P. (Pearl), March, K. (Keith), Nair, D. (Divya), Sherr, E. (Elliott), Fregeau, B. (Brieana), Wierenga, K.J. (Klaas J.), Wadley, A. (Alexandrea), Mancini, G.M.S. (Grazia), Powell-Hamilton, N. (Nina), Kamp, J.J.P. (Jacques) van de, Grebe, T. (Theresa), Dean, J. (John), Ross, A.J. (Alison), Crawford, H.P. (Heather P.), Powis, Z. (Zoe), Cho, M.T. (Megan T.), Willing, M.C. (Marcia C.), Manwaring, L. (Linda), Schot, R. (Rachel), Nava, C. (Caroline), Afenjar, A. (Alexandra), Lessel, D. (Davor), Wagner, M. (Matias), Klopstock, T. (Thomas), Winkelmann, B., Catarino, C.B. (Claudia B.), Retterer, K. (Kyle), Schuette, J.L. (Jane L.), Innis, J.W. (Jeffrey), Pizzino, A. (Amy), Lüttgen, S. (Sabine), Denecke, J. (Jonas), Strom, T.M. (Tim), Monaghan, K.G. (Kristin G.), Yuan, Z.-F. (Zuo-Fei), Dubbs, H. (Holly), Bend, R. (Renee), Lee, J.A. (Jennifer A.), Lyons, M.J. (Michael J.), Hoefele, J. (Julia), Günthner, R. (Roman), Reutter, H. (Heiko), Keren, B. (Boris), Radtke, K. (Kelly), Sherbini, O. (Omar), Mrokse, C. (Cameron), Helbig, K.L. (Katherine L.), Odent, S. (Sylvie), Cogne, B. (Benjamin), Mercier, S. (Sandra), Bezieau, S. (Stephane), Besnard, T. (Thomas), Kury, S. (Sebastien), Redon, R. (Richard), Reinson, K. (Karit), Wojcik, M.H. (Monica H.), Õunap, K. (Katrin), Ilves, P. (Pilvi), Innes, A.M. (A Micheil), Kernohan, K.D. (Kristin), Costain, G. (Gregory), Meyn, M.S. (M Stephen), Chitayat, D. (David), Zackai, E. (Elaine), Lehman, A. (Anna), Kitson, H. (Hilary), Martin, M.G. (Martin G.), Martinez-Agosto, J.A. (Julian A.), Nelson, S.F. (Stan F.), Palmer, C.G.S. (Christina G S), Papp, J.C. (Jeanette C.), Parker, N.H. (Neil H.), Sinsheimer, J.S. (Janet S.), Vilain, E. (Eric), Wan, J. (Jijun), Yoon, A.J. (Amanda J.), Zheng, A. (Allison), Brimble, E. (Elise), Ferrero, G.B. (Giovanni Battista), Radio, F.C. (Francesca Clementina), Carli, D. (Diana), Barresi, S. (Sabina), Brusco, A. (Alfredo), Tartaglia, M. (Marco), Thomas, J.M. (Jennifer Muncy), Umana, L. (Luis), Weiss, M.M. (Marjan M.), Gotway, G. (Garrett), Stuurman, K.E. (Kyra), Thompson, M.L. (Michelle L.), McWalter, K. (Kirsty), Stumpel, C.T.R.M. (Constance T R M), Stevens, S.J.C. (Servi J C), Stegmann, A.P.A. (Alexander P A), Tveten, K. (Kristian), Vøllo, A. (Arve), Prescott, T. (Trine), Fagerberg, C. (Christina), Laulund, L.W. (Lone Walentin), Larsen, M.J. (Martin J.), Byler, M. (Melissa), Lebel, R.R. (Robert Roger), Hurst, A.C. (Anna C.), Dean, J. (Joy), Schrier Vergano, S.A. (Samantha A.), Norman, J. (Jennifer), Mercimek-Andrews, S. (Saadet), Neira, J. (Juanita), Van Allen, M.I. (Margot I.), Longo, N. (Nicola), Sellars, E. (Elizabeth), Louie, R.J. (Raymond J.), Cathey, S.S. (Sara S.), Brokamp, E. (Elly), Héron, D. (Delphine), Snyder, M. (Molly), Vanderver, A. (Adeline), Simon, C. (Celeste), de la Cruz, X. (Xavier), Padilla, N. (Natália), Crump, J.G. (J Gage), Chung, W. (Wendy), Garcia, B. (Benjamin), Hakonarson, H. (Hakon), and Bhoj, E.J. (Elizabeth J.)

Abstract

Although somatic mutations in Histone 3.3 (H3.3) are well-studied drivers of oncogenesis, the role of germline mutations remains unreported. We analyze 46 patients bearing de novo germline mutations in histone 3 family 3A (H3F3A) or H3F3B with progressive neurologic dysfunction and congenital anomalies without malignancies. Molecular modeling of all 37 variants demonstrated clear disruptions in interactions with DNA, other histones, and histone chaperone proteins. Patient histone posttranslational modifications (PTMs) analysis revealed notably aberrant local PTM patterns distinct from the somatic lysine mutations that cause global PTM dysregulation. RNA sequencing on patient cells demonstrated up-regulated gene expression related to mitosis and cell division, and cellular assays confirmed an increased proliferative capacity. A zebrafish model showed craniofacial anomalies and a defect in Foxd3-derived glia. These data suggest that the mechanism of germline mutations are distinct from cancer-associated somatic histone mutations but may converge on control of cell proliferation.

Published
2020
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4. High Rate of Recurrent De Novo Mutations in Developmental and Epileptic Encephalopathies

Author

Hamdan, F.F., Myers, C.T., Cossette, P., Lemay, P., Spiegelman, D., Laporte, A.D., Nassif, C., Diallo, O., Monlong, J., Cadieux-Dion, M., Dobrzeniecka, S., Meloche, C., Retterer, K., Cho, M.T., Rosenfeld, J.A., Bi, W., Massicotte, C., Miguet, M., Brunga, L., Regan, B.M., Mo, K., Tam, C., Schneider, A., Hollingsworth, G., FitzPatrick, D.R., Donaldson, A., Canham, N., Blair, E., Kerr, B., Fry, A.E., Thomas, R.H., Shelagh, J., Hurst, J.A., Brittain, H., Blyth, M., Lebel, R.R., Gerkes, E.H., Davis-Keppen, L., Stein, Q., Chung, W.K., Dorison, S.J., Benke, P.J., Fassi, E., Corsten-Janssen, N., Kamsteeg, E.J., Mau-Them, F.T., Bruel, A.L., Verloes, A., Ounap, K., Wojcik, M.H., Albert, D.V.F., Venkateswaran, S., Ware, T., Jones, D., Liu, Y.C., Mohammad, S.S., Bizargity, P., Bacino, C.A., Leuzzi, V., Martinelli, S., Dallapiccola, B., Tartaglia, M., Blumkin, L., Wierenga, K.J., Purcarin, G., O'Byrne, J.J., Stockler, S., Lehman, A., Keren, B., Nougues, M.C., Mignot, C., Auvin, S., Nava, C., Hiatt, S.M., Bebin, M., Shao, Y., Scaglia, F., Lalani, S.R., Frye, R.E., Jarjour, I.T., Jacques, S., Boucher, R.M., Riou, E., Srour, M., Carmant, L., Lortie, A., Major, P., Diadori, P., Dubeau, F., D'Anjou, G., Bourque, G., Berkovic, S.F., Sadleir, L.G., Campeau, P.M., Kibar, Z., Lafreniere, R.G., Girard, S.L., Mercimek-Mahmutoglu, S., Boelman, C., Rouleau, G.A., et al., Hamdan, F.F., Myers, C.T., Cossette, P., Lemay, P., Spiegelman, D., Laporte, A.D., Nassif, C., Diallo, O., Monlong, J., Cadieux-Dion, M., Dobrzeniecka, S., Meloche, C., Retterer, K., Cho, M.T., Rosenfeld, J.A., Bi, W., Massicotte, C., Miguet, M., Brunga, L., Regan, B.M., Mo, K., Tam, C., Schneider, A., Hollingsworth, G., FitzPatrick, D.R., Donaldson, A., Canham, N., Blair, E., Kerr, B., Fry, A.E., Thomas, R.H., Shelagh, J., Hurst, J.A., Brittain, H., Blyth, M., Lebel, R.R., Gerkes, E.H., Davis-Keppen, L., Stein, Q., Chung, W.K., Dorison, S.J., Benke, P.J., Fassi, E., Corsten-Janssen, N., Kamsteeg, E.J., Mau-Them, F.T., Bruel, A.L., Verloes, A., Ounap, K., Wojcik, M.H., Albert, D.V.F., Venkateswaran, S., Ware, T., Jones, D., Liu, Y.C., Mohammad, S.S., Bizargity, P., Bacino, C.A., Leuzzi, V., Martinelli, S., Dallapiccola, B., Tartaglia, M., Blumkin, L., Wierenga, K.J., Purcarin, G., O'Byrne, J.J., Stockler, S., Lehman, A., Keren, B., Nougues, M.C., Mignot, C., Auvin, S., Nava, C., Hiatt, S.M., Bebin, M., Shao, Y., Scaglia, F., Lalani, S.R., Frye, R.E., Jarjour, I.T., Jacques, S., Boucher, R.M., Riou, E., Srour, M., Carmant, L., Lortie, A., Major, P., Diadori, P., Dubeau, F., D'Anjou, G., Bourque, G., Berkovic, S.F., Sadleir, L.G., Campeau, P.M., Kibar, Z., Lafreniere, R.G., Girard, S.L., Mercimek-Mahmutoglu, S., Boelman, C., and Rouleau, G.A., et al.

Abstract

Item does not contain fulltext, Developmental and epileptic encephalopathy (DEE) is a group of conditions characterized by the co-occurrence of epilepsy and intellectual disability (ID), typically with developmental plateauing or regression associated with frequent epileptiform activity. The cause of DEE remains unknown in the majority of cases. We performed whole-genome sequencing (WGS) in 197 individuals with unexplained DEE and pharmaco-resistant seizures and in their unaffected parents. We focused our attention on de novo mutations (DNMs) and identified candidate genes containing such variants. We sought to identify additional subjects with DNMs in these genes by performing targeted sequencing in another series of individuals with DEE and by mining various sequencing datasets. We also performed meta-analyses to document enrichment of DNMs in candidate genes by leveraging our WGS dataset with those of several DEE and ID series. By combining these strategies, we were able to provide a causal link between DEE and the following genes: NTRK2, GABRB2, CLTC, DHDDS, NUS1, RAB11A, GABBR2, and SNAP25. Overall, we established a molecular diagnosis in 63/197 (32%) individuals in our WGS series. The main cause of DEE in these individuals was de novo point mutations (53/63 solved cases), followed by inherited mutations (6/63 solved cases) and de novo CNVs (4/63 solved cases). De novo missense variants explained a larger proportion of individuals in our series than in other series that were primarily ascertained because of ID. Moreover, these DNMs were more frequently recurrent than those identified in ID series. These observations indicate that the genetic landscape of DEE might be different from that of ID without epilepsy.

Published
2017

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