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3 results on '"Hahn, Sihoun"'

1. De Novo Mutations in Protein Kinase Genes CAMK2A and CAMK2B Cause Intellectual Disability

Author

Küry, Sébastien, van Woerden, Geeske M, Besnard, Thomas, Onori, Martina Proietti, Latypova, Xénia, Towne, Meghan C, Cho, Megan T, Prescott, Trine E, Ploeg, Melissa A, Sanders, Stephan, Stessman, Holly AF, Pujol, Aurora, Distel, Ben, Robak, Laurie A, Bernstein, Jonathan A, Denommé-Pichon, Anne-Sophie, Lesca, Gaëtan, Sellars, Elizabeth A, Berg, Jonathan, Carré, Wilfrid, Busk, Øyvind Løvold, van Bon, Bregje WM, Waugh, Jeff L, Deardorff, Matthew, Hoganson, George E, Bosanko, Katherine B, Johnson, Diana S, Dabir, Tabib, Holla, Øystein Lunde, Sarkar, Ajoy, Tveten, Kristian, de Bellescize, Julitta, Braathen, Geir J, Terhal, Paulien A, Grange, Dorothy K, van Haeringen, Arie, Lam, Christina, Mirzaa, Ghayda, Burton, Jennifer, Bhoj, Elizabeth J, Douglas, Jessica, Santani, Avni B, Nesbitt, Addie I, Helbig, Katherine L, Andrews, Marisa V, Begtrup, Amber, Tang, Sha, van Gassen, Koen LI, Juusola, Jane, Foss, Kimberly, Enns, Gregory M, Moog, Ute, Hinderhofer, Katrin, Paramasivam, Nagarajan, Lincoln, Sharyn, Kusako, Brandon H, Lindenbaum, Pierre, Charpentier, Eric, Nowak, Catherine B, Cherot, Elouan, Simonet, Thomas, Ruivenkamp, Claudia AL, Hahn, Sihoun, Brownstein, Catherine A, Xia, Fan, Schmitt, Sébastien, Deb, Wallid, Bonneau, Dominique, Nizon, Mathilde, Quinquis, Delphine, Chelly, Jamel, Rudolf, Gabrielle, Sanlaville, Damien, Parent, Philippe, Gilbert-Dussardier, Brigitte, Toutain, Annick, Sutton, Vernon R, Thies, Jenny, Peart-Vissers, Lisenka ELM, Boisseau, Pierre, Vincent, Marie, Grabrucker, Andreas M, Dubourg, Christèle, Network, Undiagnosed Diseases, Tan, Wen-Hann, Verbeek, Nienke E, Granzow, Martin, Santen, Gijs WE, Shendure, Jay, Isidor, Bertrand, Pasquier, Laurent, Redon, Richard, Yang, Yaping, State, Matthew W, Kleefstra, Tjitske, Cogné, Benjamin, HUGO, GEM, Study, Deciphering Developmental Disorders, Petrovski, Slavé, and Retterer, Kyle

Subjects
Biological Sciences, Bioinformatics and Computational Biology, Biomedical and Clinical Sciences, Neurosciences, Brain Disorders, Genetics, Intellectual and Developmental Disabilities (IDD), Pediatric, Underpinning research, 1.1 Normal biological development and functioning, Aetiology, 2.1 Biological and endogenous factors, Neurological, Animals, Brain, Calcium-Calmodulin-Dependent Protein Kinase Type 2, Cell Line, Exome, Female, Glutamic Acid, HEK293 Cells, Humans, Intellectual Disability, Male, Mice, Mice, Inbred C57BL, Mutation, Neurons, Phosphorylation, Signal Transduction, Undiagnosed Diseases Network, GEM HUGO, Deciphering Developmental Disorders Study, AMPAR, CAMK2, CAMK2A, CAMK2B, NMDAR, de novo mutations, intellectual disability, synaptic plasticity, Medical and Health Sciences, Genetics & Heredity, Biological sciences, Biomedical and clinical sciences, Health sciences
Abstract

Calcium/calmodulin-dependent protein kinase II (CAMK2) is one of the first proteins shown to be essential for normal learning and synaptic plasticity in mice, but its requirement for human brain development has not yet been established. Through a multi-center collaborative study based on a whole-exome sequencing approach, we identified 19 exceedingly rare de novo CAMK2A or CAMK2B variants in 24 unrelated individuals with intellectual disability. Variants were assessed for their effect on CAMK2 function and on neuronal migration. For both CAMK2A and CAMK2B, we identified mutations that decreased or increased CAMK2 auto-phosphorylation at Thr286/Thr287. We further found that all mutations affecting auto-phosphorylation also affected neuronal migration, highlighting the importance of tightly regulated CAMK2 auto-phosphorylation in neuronal function and neurodevelopment. Our data establish the importance of CAMK2A and CAMK2B and their auto-phosphorylation in human brain function and expand the phenotypic spectrum of the disorders caused by variants in key players of the glutamatergic signaling pathway.

Published
2017

2. Missense and truncating variants in CHD5 in a dominant neurodevelopmental disorder with intellectual disability, behavioral disturbances, and epilepsy

Author

Parenti, Ilaria, Lehalle, Daphné, Nava, Caroline, Torti, Erin, Leitão, Elsa, Person, Richard, Mizuguchi, Takeshi, Matsumoto, Naomichi, Kato, Mitsuhiro, Nakamura, Kazuyuki, de Man, Stella A., Cope, Heidi, Shashi, Vandana, Friedman, Jennifer, Joset, Pascal, Steindl, Katharina, Rauch, Anita, Muffels, Irena, van Hasselt, Peter M., Petit, Florence, Smol, Thomas, Le Guyader, Gwenaël, Bilan, Frédéric, Sorlin, Arthur, Vitobello, Antonio, Philippe, Christophe, van de Laar, Ingrid M. B. H., van Slegtenhorst, Marjon A., Campeau, Philippe M., Au, Ping Yee Billie, Nakashima, Mitsuko, Saitsu, Hirotomo, Yamamoto, Tatsuya, Nomura, Yumiko, Louie, Raymond J., Lyons, Michael J., Dobson, Amy, Plomp, Astrid S., Motazacker, M. Mahdi, Kaiser, Frank J., Timberlake, Andrew T., Fuchs, Sabine A., Depienne, Christel, Mignot, Cyril, Acosta, Maria T., Adam, Margaret, Adams, David R., Agrawal, Pankaj B., Alejandro, Mercedes E., Alvey, Justin, Amendola, Laura, Andrews, Ashley, Ashley, Euan A., Azamian, Mahshid S., Bacino, Carlos A., Bademci, Guney, Baker, Eva, Balasubramanyam, Ashok, Baldridge, Dustin, Bale, Jim, Bamshad, Michael, Barbouth, Deborah, Bayrak-Toydemir, Pinar, Beck, Anita, Beggs, Alan H., Behrens, Edward, Bejerano, Gill, Bennet, Jimmy, Berg-Rood, Beverly, Bernstein, Jonathan A., Berry, Gerard T., Bican, Anna, Bivona, Stephanie, Blue, Elizabeth, Bohnsack, John, Bonnenmann, Carsten, Bonner, Devon, Botto, Lorenzo, Boyd, Brenna, Briere, Lauren C., Brokamp, Elly, Brown, Gabrielle, Burke, Elizabeth A., Burrage, Lindsay C., Butte, Manish J., Byers, Peter, Byrd, William E., Carey, John, Carrasquillo, Olveen, Chang, Ta Chen Peter, Chanprasert, Sirisak, Chao, Hsiao-Tuan, Clark, Gary D., Coakley, Terra R., Cobban, Laurel A., Cogan, Joy D., Coggins, Matthew, Cole, F. Sessions, Colley, Heather A., Cooper, Cynthia M., Craigen, William J., Crouse, Andrew B., Cunningham, Michael, D’Souza, Precilla, Dai, Hongzheng, Dasari, Surendra, Davis, Joie, Dayal, Jyoti G., Deardorff, Matthew, Dell’Angelica, Esteban C., Dhar, Shweta U., Dipple, Katrina, Doherty, Daniel, Dorrani, Naghmeh, Doss, Argenia L., Douine, Emilie D., Draper, David D., Duncan, Laura, Earl, Dawn, Eckstein, David J., Emrick, Lisa T., Eng, Christine M., Esteves, Cecilia, Falk, Marni, Fernandez, Liliana, Ferreira, Carlos, Fieg, Elizabeth L., Findley, Laurie C., Fisher, Paul G., Fogel, Brent L., Forghani, Irman, Fresard, Laure, Gahl, William A., Glass, Ian, Gochuico, Bernadette, Godfrey, Rena A., Golden-Grant, Katie, Goldman, Alica M., Goldrich, Madison P., Goldstein, David B., Grajewski, Alana, Groden, Catherine A., Gutierrez, Irma, Hahn, Sihoun, Hamid, Rizwan, Hanchard, Neil A., Hassey, Kelly, Hayes, Nichole, High, Frances, Hing, Anne, Hisama, Fuki M., Holm, Ingrid A., Hom, Jason, Horike-Pyne, Martha, Huang, Alden, Huang, Yong, Huryn, Laryssa, Isasi, Rosario, Jamal, Fariha, Jarvik, Gail P., Jarvik, Jeffrey, Jayadev, Suman, Karaviti, Lefkothea, Kennedy, Jennifer, Kiley, Dana, Kohane, Isaac S., Kohler, Jennefer N., Krakow, Deborah, Krasnewich, Donna M., Kravets, Elijah, Korrick, Susan, Koziura, Mary, Krier, Joel B., Lalani, Seema R., Lam, Byron, Lam, Christina, LaMoure, Grace L., Lanpher, Brendan C., Lanza, Ian R., Latham, Lea, LeBlanc, Kimberly, Lee, Brendan H., Lee, Hane, Levitt, Roy, Lewis, Richard A., Lincoln, Sharyn A., Liu, Pengfei, Liu, Xue Zhong, Longo, Nicola, Loo, Sandra K., Loscalzo, Joseph, Maas, Richard L., MacDowall, John, Macnamara, Ellen F., Mac-Rae, Calum A., Maduro, Valerie V., Majcherska, Marta M., Mak, Bryan C., Malicdan, May Christine V., Mamounas, Laura A., Manolio, Teri A., Mao, Rong, Maravilla, Kenneth, Markello, Thomas C., Marom, Ronit, Marth, Gabor, Martin, Beth A., Martin, Martin G., Martínez-Agosto, Julian A., Marwaha, Shruti, McCauley, Jacob, McConkie-Rosell, Allyn, McCormack, Colleen E., McCray, Alexa T., McGee, Elisabeth, Mefford, Heather, Merritt, J. Lawrence, Might, Matthew, Mirzaa, Ghayda, Morava, Eva, Moretti, Paolo M., Mosbrook-Davis, Deborah, Mulvihill, John J., Murdock, David R., Nagy, Anna, Nakano-Okuno, Mariko, Nath, Avi, Nelson, Stan F., Newman, John H., Nicholas, Sarah K., Nickerson, Deborah, Nieves-Rodriguez, Shirley, Novacic, Donna, Oglesbee, Devin, Orengo, James P., Pace, Laura, Pak, Stephen, Pallais, J. Carl, Palmer, Christina GS., Papp, Jeanette C., Parker, Neil H., Phillips, John A., Posey, Jennifer E., Potocki, Lorraine, Power, Bradley, Pusey, Barbara N., Quinlan, Aaron, Raskind, Wendy, Raja, Archana N., Rao, Deepak A., Renteria, Genecee, Reuter, Chloe M., Rives, Lynette, Robertson, Amy K., Rodan, Lance H., Rosenfeld, Jill A., Rosenwasser, Natalie, Rossignol, Francis, Ruzhnikov, Maura, Sacco, Ralph, Sampson, Jacinda B., Samson, Susan L., Saporta, Mario, Scott, C. Ron, Schaechter, Judy, Schedl, Timothy, Schoch, Kelly, Scott, Daryl A., Shin, Jimann, Signer, Rebecca, Silverman, Edwin K., Sinsheimer, Janet S., Sisco, Kathy, Smith, Edward C., Smith, Kevin S., Solem, Emily, Solnica-Krezel, Lilianna, Solomon, Ben, Spillmann, Rebecca C., Stoler, Joan M., Sullivan, Jennifer A., Sullivan, Kathleen, Sun, Angela, Sutton, Shirley, Sweetser, David A., Sybert, Virginia, Tabor, Holly K., Tan, Amelia L. M., Tan, Queenie K.-G., Tekin, Mustafa, Telischi, Fred, Thorson, Willa, Thurm, Audrey, Tifft, Cynthia J., Toro, Camilo, Tran, Alyssa A., Tucker, Brianna M., Urv, Tiina K., Vanderver, Adeline, Velinder, Matt, Viskochil, Dave, Vogel, Tiphanie P., Wahl, Colleen E., Wallace, Stephanie, Walley, Nicole M., Walsh, Chris A., Walker, Melissa, Wambach, Jennifer, Wan, Jijun, Wang, Lee-kai, Wangler, Michael F., Ward, Patricia A., Wegner, Daniel, Wener, Mark, Wenger, Tara, Perry, Katherine Wesseling, Westerfield, Monte, Wheeler, Matthew T., Whitlock, Jordan, Wolfe, Lynne A., Woods, Jeremy D., Yamamoto, Shinya, Yang, John, Yousef, Muhammad, Zastrow, Diane B., Zein, Wadih, Zhao, Chunli, Zuchner, Stephan, Clinical Genetics, Human Genetics, ACS - Pulmonary hypertension & thrombosis, and ANS - Complex Trait Genetics

Subjects
Male, Adolescent, Mutation, Missense, Medizin, Nerve Tissue Proteins, Biology, Frameshift mutation, Chromodomain, Cohort Studies, Young Adult, Epilepsy, Neurodevelopmental disorder, Catalytic Domain, Intellectual Disability, Intellectual disability, Genetics, medicine, Humans, Missense mutation, Child, Genetics (clinical), Exome sequencing, Original Investigation, Genes, Dominant, DNA Helicases, medicine.disease, Pedigree, Neurodevelopmental Disorders, Child, Preschool, Speech delay, Female, medicine.symptom
Abstract

Located in the critical 1p36 microdeletion region, the chromodomain helicase DNA-binding protein 5 (CHD5) gene encodes a subunit of the nucleosome remodeling and deacetylation (NuRD) complex required for neuronal development. Pathogenic variants in six of nine chromodomain (CHD) genes cause autosomal dominant neurodevelopmental disorders, while CHD5-related disorders are still unknown. Thanks to GeneMatcher and international collaborations, we assembled a cohort of 16 unrelated individuals harboring heterozygous CHD5 variants, all identified by exome sequencing. Twelve patients had de novo CHD5 variants, including ten missense and two splice site variants. Three familial cases had nonsense or missense variants segregating with speech delay, learning disabilities, and/or craniosynostosis. One patient carried a frameshift variant of unknown inheritance due to unavailability of the father. The most common clinical features included language deficits (81%), behavioral symptoms (69%), intellectual disability (64%), epilepsy (62%), and motor delay (56%). Epilepsy types were variable, with West syndrome observed in three patients, generalized tonic–clonic seizures in two, and other subtypes observed in one individual each. Our findings suggest that, in line with other CHD-related disorders, heterozygous CHD5 variants are associated with a variable neurodevelopmental syndrome that includes intellectual disability with speech delay, epilepsy, and behavioral problems as main features.

Published
2021
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3. Prevalence of ALDH7A1 mutations in 18 North American pyridoxine-dependent seizure (PDS) patients.

Author

Bennett, Craig L., Chen, Yingzhang, Hahn, Sihoun, Glass, Ian A., and Gospe Jr., Sidney M.

Subjects
SEIZURES (Medicine), ANTICONVULSANTS, VITAMIN B6, GENETICS, GENETIC mutation
Abstract

Pyridoxine-dependent seizure (PDS) is a rare disorder characterized by seizures that are resistant to common anticonvulsants, and that are ultimately controlled by daily pharmacologic doses of pyridoxine (vitamin B6). Mutations of the antiquitin gene ( ALDH7A1) are now recognized as the molecular basis of cases of neonatal-onset PDS. Bidirectional DNA sequence analysis of ALDH7A1 was undertaken along with plasma pipecolic acid (PA) measurements to determine the prevalence of ALDH7A1 mutations in a cohort of 18 North American patients with PDS. In patients with neonatal-onset PDS, compound heterozygous or homozygous ALDH7A1 mutations were detected in 10 of 12 cases, and a single mutation was found in the remaining 2. In later-onset cases, mutations in ALDH7A1 were detected in three of six cases. In two patients with infantile spasms responsive to pyridoxine treatment and with good clinical outcomes, no mutations were found and PA levels were normal. In total, 13 novel mutations were identified. Our study advances previous findings that defects of ALDH7A1 are almost always the cause of neonatal-onset PDS and that defects in this gene are also responsible for some but not all later-onset cases. Later-onset cases of infantile spasms with good outcomes lacked evidence for antiquitin dysfunction, suggesting that this phenotype is less compelling for PDS. [ABSTRACT FROM AUTHOR]

Published
2009
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