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1. Additional file 5 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 5: Table S2. Seizure and seizure-like episodes in affected individuals with at least one afebrile seizure.

Published
2022
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2. Additional file 6 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 6: Figure S1. TASK3 conformational changes define PC motions and channel gating. Figure S2. Detailed view of the TASK3 selectivity filter and surrounding residues. Figure S3. Distributions of K+ ions for selected positions along the transport process, and across variants. Figure S4. Genomic variants lead to changes in K+ concentration at the selectivity filter. Figure S5. Cellular localization of labelled TASK3 variants. Figure S6. Comparison of whole cell current density for Tyr205Cys in the presence of various cysteine-modifying agents.

Published
2022
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3. Additional file 1 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 1: Supplementary Note. Clinical Histories. Written clinical histories including genetic testing for each novel family in this study. Molecular Modeling Reveals Mutation-Specific Effects on Channel Mechanics. Molecular Dynamics Simulations Show Changes in Potassium Ion Distribution.

Published
2022
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4. Additional file 9 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 9: Table S5. A comparison of GPCRs regulation between TASK3 clinical variants and WT controls.

Published
2022
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5. Additional file 7 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 7: Table S3. A comparison of whole cell current density and reversal potentials between TASK3 clinical variants and matched WT controls.

Published
2022
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6. Additional file 8 of Gain and loss of TASK3 channel function and its regulation by novel variation cause KCNK9 imprinting syndrome

Author

Cousin, Margot A., Veale, Emma L., Dsouza, Nikita R., Tripathi, Swarnendu, Holden, Robyn G., Arelin, Maria, Beek, Geoffrey, Bekheirnia, Mir Reza, Beygo, Jasmin, Bhambhani, Vikas, Bialer, Martin, Bigoni, Stefania, Boelman, Cyrus, Carmichael, Jenny, Courtin, Thomas, Cogne, Benjamin, Dabaj, Ivana, Doummar, Diane, Fazilleau, Laura, Ferlini, Alessandra, Gavrilova, Ralitza H., Graham, John M., Haack, Tobias B., Juusola, Jane, Kant, Sarina G., Kayani, Saima, Keren, Boris, Ketteler, Petra, Klöckner, Chiara, Koopmann, Tamara T., Kruisselbrink, Teresa M., Kuechler, Alma, Lambert, Laëtitia, Latypova, Xénia, Lebel, Robert Roger, Leduc, Magalie S., Leonardi, Emanuela, Lewis, Andrea M., Liew, Wendy, Machol, Keren, Mardini, Samir, McWalter, Kirsty, Mignot, Cyril, McLaughlin, Julie, Murgia, Alessandra, Narayanan, Vinodh, Nava, Caroline, Neuser, Sonja, Nizon, Mathilde, Ognibene, Davide, Park, Joohyun, Platzer, Konrad, Poirsier, Céline, Radtke, Maximilian, Ramsey, Keri, Runke, Cassandra K., Guillen Sacoto, Maria J., Scaglia, Fernando, Shinawi, Marwan, Spranger, Stephanie, Tan, Ee Shien, Taylor, John, Trentesaux, Anne-Sophie, Vairo, Filippo, Willaert, Rebecca, Zadeh, Neda, Urrutia, Raul, Babovic-Vuksanovic, Dusica, Zimmermann, Michael T., Mathie, Alistair, and Klee, Eric W.

Abstract

Additional file 8: Table S4. A comparison of inhibition by extracellular acidification (pH 6.4) between TASK3 clinical variants and WT controls.

Published
2022
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7. Expanding the genotypic and phenotypic spectrum in a diverse cohort of 104 individuals with Wiedemann-Steiner syndrome

Author

Sheppard, Sarah E, Campbell, Ian M, Harr, Margaret H, Gold, Nina, Li, Dong, Bjornsson, Hans T, Cohen, Julie S, Fahrner, Jill A, Fatemi, Ali, Harris, Jacqueline R, Nowak, Catherine, Stevens, Cathy A, Grand, Katheryn, Au, Margaret, Graham, John M, Sanchez-Lara, Pedro A, Campo, Miguel Del, Jones, Marilyn C, Abdul-Rahman, Omar, Alkuraya, Fowzan S, Bassetti, Jennifer A, Bergstrom, Katherine, Bhoj, Elizabeth, Dugan, Sarah, Kaplan, Julie D, Derar, Nada, Gripp, Karen W, Hauser, Natalie, Innes, A Micheil, Keena, Beth, Kodra, Neslida, Miller, Rebecca, Nelson, Beverly, Nowaczyk, Malgorzata J, Rahbeeni, Zuhair, Ben-Shachar, Shay, Shieh, Joseph T, Slavotinek, Anne, Sobering, Andrew K, Abbott, Mary-Alice, Allain, Dawn C, Amlie-Wolf, Louise, Au, Ping Yee Billie, Bedoukian, Emma, Beek, Geoffrey, Barry, James, Berg, Janet, Bernstein, Jonathan A, Cytrynbaum, Cheryl, Chung, Brian Hon-Yin, Donoghue, Sarah, Dorrani, Naghmeh, Eaton, Alison, Flores-Daboub, Josue A, Dubbs, Holly, Felix, Carolyn A, Fong, Chin-To, Fung, Jasmine Lee Fong, Gangaram, Balram, Goldstein, Amy, Greenberg, Rotem, Ha, Thoa K, Hersh, Joseph, Izumi, Kosuke, Kallish, Staci, Kravets, Elijah, Kwok, Pui-Yan, Jobling, Rebekah K, Knight Johnson, Amy E, Kushner, Jessica, Lee, Bo Hoon, Levin, Brooke, Lindstrom, Kristin, Manickam, Kandamurugu, Mardach, Rebecca, McCormick, Elizabeth, McLeod, D Ross, Mentch, Frank D, Minks, Kelly, Muraresku, Colleen, Nelson, Stanley F, Porazzi, Patrizia, Pichurin, Pavel N, Powell-Hamilton, Nina N, Powis, Zoe, Ritter, Alyssa, Rogers, Caleb, Rohena, Luis, Ronspies, Carey, Schroeder, Audrey, Stark, Zornitza, Starr, Lois, Stoler, Joan, Suwannarat, Pim, Velinov, Milen, Weksberg, Rosanna, Wilnai, Yael, Zadeh, Neda, Zand, Dina J, and Falk, Marni J

Subjects
Steiner syndrome, Clinical Sciences, Hypertrichosis, Black People, White People, Rare Diseases, Loss of Function Mutation, Clinical Research, Intellectual Disability, Wiedemann&#8208, Genetics, Humans, 2.1 Biological and endogenous factors, Genetic Predisposition to Disease, syndromic intellectual disability, Aetiology, syndromic short stature, Growth Disorders, Genetic Association Studies, Retrospective Studies, Pediatric, Wiedemann-Steiner syndrome, Histone-Lysine N-Methyltransferase, KMT2A, Failure to Thrive, Brain Disorders, Congenital Structural Anomalies, MLL1, Constipation, Myeloid-Lymphoid Leukemia Protein
Abstract

Wiedemann-Steiner syndrome (WSS) is an autosomal dominant disorder caused by monoallelic variants in KMT2A and characterized by intellectual disability and hypertrichosis. We performed a retrospective, multicenter, observational study of 104 individuals with WSS from five continents to characterize the clinical and molecular spectrum of WSS in diverse populations, to identify physical features that may be more prevalent in White versus Black Indigenous People of Color individuals, to delineate genotype-phenotype correlations, to define developmental milestones, to describe the syndrome through adulthood, and to examine clinicians' differential diagnoses. Sixty-nine of the 82 variants (84%) observed in the study were not previously reported in the literature. Common clinical features identified in the cohort included: developmental delay or intellectual disability (97%), constipation (63.8%), failure to thrive (67.7%), feeding difficulties (66.3%), hypertrichosis cubiti (57%), short stature (57.8%), and vertebral anomalies (46.9%). The median ages at walking and first words were 20 months and 18 months, respectively. Hypotonia was associated with loss of function (LoF) variants, and seizures were associated with non-LoF variants. This study identifies genotype-phenotype correlations as well as race-facial feature associations in an ethnically diverse cohort, and accurately defines developmental trajectories, medical comorbidities, and long-term outcomes in individuals with WSS.

Published
2021

8. Biallelic variants in HPDL cause pure and complicated hereditary spastic paraplegia

Author

Wiessner, Manuela, Maroofian, Reza, Ni, Meng-Yuan, Pedroni, Andrea, Müller, Juliane S, Stucka, Rolf, Beetz, Christian, Efthymiou, Stephanie, Santorelli, Filippo M, Alfares, Ahmed A, Zhu, Changlian, Uhrova Meszarosova, Anna, Alehabib, Elham, Bakhtiari, Somayeh, Janecke, Andreas R, Otero, Maria Gabriela, Chen, Jin Yun Helen, Peterson, James T, Strom, Tim M, De Jonghe, Peter, Deconinck, Tine, De Ridder, Willem, De Winter, Jonathan, Pasquariello, Rossella, Ricca, Ivana, Alfadhel, Majid, van de Warrenburg, Bart P, Portier, Ruben, Bergmann, Carsten, Ghasemi Firouzabadi, Saghar, Jin, Sheng Chih, Bilguvar, Kaya, Hamed, Sherifa, Abdelhameed, Mohammed, Haridy, Nourelhoda A, Maqbool, Shazia, Rahman, Fatima, Anwar, Najwa, Carmichael, Jenny, Pagnamenta, Alistair, Wood, Nick W, Tran Mau-Them, Frederic, Haack, Tobias, Genomics England Research Consortium, PREPARE network, Di Rocco, Maja, Ceccherini, Isabella, Iacomino, Michele, Zara, Federico, Salpietro, Vincenzo, Scala, Marcello, Rusmini, Marta, Xu, Yiran, Wang, Yinghong, Suzuki, Yasuhiro, Koh, Kishin, Nan, Haitian, Ishiura, Hiroyuki, Tsuji, Shoji, Lambert, Laëtitia, Schmitt, Emmanuelle, Lacaze, Elodie, Küpper, Hanna, Dredge, David, Skraban, Cara, Goldstein, Amy, Willis, Mary JH, Grand, Katheryn, Graham, John M, Lewis, Richard A, Millan, Francisca, Duman, Özgür, Dündar, Nihal, Uyanik, Gökhan, Schöls, Ludger, Nürnberg, Peter, Nürnberg, Gudrun, Catala Bordes, Andrea, Seeman, Pavel, Kuchar, Martin, Darvish, Hossein, Rebelo, Adriana, Bouçanova, Filipa, Medard, Jean-Jacques, Chrast, Roman, Auer-Grumbach, Michaela, Alkuraya, Fowzan S, Shamseldin, Hanan, Al Tala, Saeed, Rezazadeh Varaghchi, Jamileh, Najafi, Maryam, Deschner, Selina, Gläser, Dieter, Hüttel, Wolfgang, Kruer, Michael C, Kamsteeg, Erik-Jan, Takiyama, Yoshihisa, Züchner, Stephan, Baets, Jonathan, Synofzik, Matthis, and Schüle, Rebecca

Subjects
Male, Neurodegenerative, Medical and Health Sciences, Mice, Clinical Research, mitochondrial disorder, Genetics, Animals, Humans, Spastic Paraplegia, HSP, 2.1 Biological and endogenous factors, hereditary spastic paraplegia, Aetiology, Zebrafish, Neurology & Neurosurgery, Psychology and Cognitive Sciences, Neurosciences, autosomal recessive, HPDL, Rats, Pedigree, Hereditary, Genomics England Research Consortium, Mutation, Neurological, Oxygenases, Female, PREPARE network
Abstract

Human 4-hydroxyphenylpyruvate dioxygenase-like (HPDL) is a putative iron-containing non-heme oxygenase of unknown specificity and biological significance. We report 25 families containing 34 individuals with neurological disease associated with biallelic HPDL variants. Phenotypes ranged from juvenile-onset pure hereditary spastic paraplegia to infantile-onset spasticity and global developmental delays, sometimes complicated by episodes of neurological and respiratory decompensation. Variants included bona fide pathogenic truncating changes, although most were missense substitutions. Functionality of variants could not be determined directly as the enzymatic specificity of HPDL is unknown; however, when HPDL missense substitutions were introduced into 4-hydroxyphenylpyruvate dioxygenase (HPPD, an HPDL orthologue), they impaired the ability of HPPD to convert 4-hydroxyphenylpyruvate into homogentisate. Moreover, three additional sets of experiments provided evidence for a role of HPDL in the nervous system and further supported its link to neurological disease: (i) HPDL was expressed in the nervous system and expression increased during neural differentiation; (ii) knockdown of zebrafish hpdl led to abnormal motor behaviour, replicating aspects of the human disease; and (iii) HPDL localized to mitochondria, consistent with mitochondrial disease that is often associated with neurological manifestations. Our findings suggest that biallelic HPDL variants cause a syndrome varying from juvenile-onset pure hereditary spastic paraplegia to infantile-onset spastic tetraplegia associated with global developmental delays.

Published
2021

9. GATAD2B-associated neurodevelopmental disorder (GAND): clinical and molecular insights into a NuRD-related disorder

Author

Shieh, Christine, Jones, Natasha, Vanle, Brigitte, Au, Margaret, Huang, Alden Y, Silva, Ana PG, Lee, Hane, Douine, Emilie D, Otero, Maria G, Choi, Andrew, Grand, Katheryn, Taff, Ingrid P, Delgado, Mauricio R, Hajianpour, MJ, Seeley, Andrea, Rohena, Luis, Vernon, Hilary, Gripp, Karen W, Vergano, Samantha A, Mahida, Sonal, Naidu, Sakkubai, Sousa, Ana Berta, Wain, Karen E, Challman, Thomas D, Beek, Geoffrey, Basel, Donald, Ranells, Judith, Smith, Rosemarie, Yusupov, Roman, Freckmann, Mary-Louise, Ohden, Lisa, Davis-Keppen, Laura, Chitayat, David, Dowling, James J, Finkel, Richard, Dauber, Andrew, Spillmann, Rebecca, Pena, Loren DM, Undiagnosed Diseases Network, Metcalfe, Kay, Splitt, Miranda, Lachlan, Katherine, McKee, Shane A, Hurst, Jane, Fitzpatrick, David R, Morton, Jenny EV, Cox, Helen, Venkateswaran, Sunita, Young, Juan I, Marsh, Eric D, Nelson, Stanley F, Martinez, Julian A, Graham, John M, Kini, Usha, Mackay, Joel P, and Pierson, Tyler Mark

Subjects
Intellectual and Developmental Disabilities (IDD), Clinical Sciences, apraxia of speech, NuRD complex, macrocephaly, GATA Transcription Factors, chromatin remodeling, GATAD2B, Pregnancy, Clinical Research, Intellectual Disability, Genetics, Humans, 2.1 Biological and endogenous factors, Aetiology, Child, Pediatric, Genetics & Heredity, Undiagnosed Diseases Network, Megalencephaly, Nucleosomes, Brain Disorders, Repressor Proteins, Phenotype, Neurodevelopmental Disorders, Congenital Structural Anomalies, Female
Abstract

PurposeDetermination of genotypic/phenotypic features of GATAD2B-associated neurodevelopmental disorder (GAND).MethodsFifty GAND subjects were evaluated to determine consistent genotypic/phenotypic features. Immunoprecipitation assays utilizing in vitro transcription-translation products were used to evaluate GATAD2B missense variants' ability to interact with binding partners within the nucleosome remodeling and deacetylase (NuRD) complex.ResultsSubjects had clinical findings that included macrocephaly, hypotonia, intellectual disability, neonatal feeding issues, polyhydramnios, apraxia of speech, epilepsy, and bicuspid aortic valves. Forty-one novelGATAD2B variants were identified with multiple variant types (nonsense, truncating frameshift, splice-site variants, deletions, and missense). Seven subjects were identified with missense variants that localized within two conserved region domains (CR1 or CR2) of the GATAD2B protein. Immunoprecipitation assays revealed several of these missense variants disrupted GATAD2B interactions with its NuRD complex binding partners.ConclusionsA consistent GAND phenotype was caused by a range of genetic variants in GATAD2B that include loss-of-function and missense subtypes. Missense variants were present in conserved region domains that disrupted assembly of NuRD complex proteins. GAND's clinical phenotype had substantial clinical overlap with other disorders associated with the NuRD complex that involve CHD3 and CHD4, with clinical features of hypotonia, intellectual disability, cardiac defects, childhood apraxia of speech, and macrocephaly.

Published
2020

10. Partial Loss of USP9X Function Leads to a Male Neurodevelopmental and Behavioral Disorder Converging on Transforming Growth Factor β Signaling

Author

Johnson, Brett V, Kumar, Raman, Oishi, Sabrina, Alexander, Suzy, Kasherman, Maria, Vega, Michelle Sanchez, Ivancevic, Atma, Gardner, Alison, Domingo, Deepti, Corbett, Mark, Parnell, Euan, Yoon, Sehyoun, Oh, Tracey, Lines, Matthew, Lefroy, Henrietta, Kini, Usha, Van Allen, Margot, Grønborg, Sabine, Mercier, Sandra, Küry, Sébastien, Bézieau, Stéphane, Pasquier, Laurent, Raynaud, Martine, Afenjar, Alexandra, Billette de Villemeur, Thierry, Keren, Boris, Désir, Julie, Van Maldergem, Lionel, Marangoni, Martina, Dikow, Nicola, Koolen, David A, VanHasselt, Peter M, Weiss, Marjan, Zwijnenburg, Petra, Sa, Joaquim, Reis, Claudia Falcao, López-Otín, Carlos, Santiago-Fernández, Olaya, Fernández-Jaén, Alberto, Rauch, Anita, Steindl, Katharina, Joset, Pascal, Goldstein, Amy, Madan-Khetarpal, Suneeta, Infante, Elena, Zackai, Elaine, Mcdougall, Carey, Narayanan, Vinodh, Ramsey, Keri, Mercimek-Andrews, Saadet, Pena, Loren, Shashi, Vandana, Undiagnosed Diseases Network, Schoch, Kelly, Sullivan, Jennifer A, Pinto E Vairo, Filippo, Pichurin, Pavel N, Ewing, Sarah A, Barnett, Sarah S, Klee, Eric W, Perry, M Scott, Koenig, Mary Kay, Keegan, Catherine E, Schuette, Jane L, Asher, Stephanie, Perilla-Young, Yezmin, Smith, Laurie D, Rosenfeld, Jill A, Bhoj, Elizabeth, Kaplan, Paige, Li, Dong, Oegema, Renske, van Binsbergen, Ellen, van der Zwaag, Bert, Smeland, Marie Falkenberg, Cutcutache, Ioana, Page, Matthew, Armstrong, Martin, Lin, Angela E, Steeves, Marcie A, Hollander, Nicolette den, Hoffer, Mariëtte JV, Reijnders, Margot RF, Demirdas, Serwet, Koboldt, Daniel C, Bartholomew, Dennis, Mosher, Theresa Mihalic, Hickey, Scott E, Shieh, Christine, Sanchez-Lara, Pedro A, Graham, John M, Tezcan, Kamer, Schaefer, GB, Danylchuk, Noelle R, Asamoah, Alexander, Jackson, Kelly E, Yachelevich, Naomi, Au, Margaret, Pérez-Jurado, Luis A, and Kleefstra, Tjitske

Subjects
Male, Brain malformation, Developmental Disabilities, Haploinsufficiency, USP9X, Deubiquitylating enzyme, Hippocampus, Medical and Health Sciences, Mice, TGFβ, Neurodevelopmental disorder, Transforming Growth Factor beta, Clinical Research, TGF beta, Intellectual Disability, Behavioral and Social Science, Genetics, Animals, Humans, 2.1 Biological and endogenous factors, Aetiology, Pediatric, Psychiatry, Psychology and Cognitive Sciences, Neurosciences, Undiagnosed Diseases Network, Biological Sciences, Brain Disorders, Phenotype, Mental Health, Neurological, Congenital Structural Anomalies, Female, Ubiquitin Thiolesterase, Signal Transduction
Abstract

BackgroundThe X-chromosome gene USP9X encodes a deubiquitylating enzyme that has been associated with neurodevelopmental disorders primarily in female subjects. USP9X escapes X inactivation, and in female subjects de novo heterozygous copy number loss or truncating mutations cause haploinsufficiency culminating in a recognizable syndrome with intellectual disability and signature brain and congenital abnormalities. In contrast, the involvement of USP9X in male neurodevelopmental disorders remains tentative.MethodsWe used clinically recommended guidelines to collect and interrogate the pathogenicity of 44 USP9X variants associated with neurodevelopmental disorders in males. Functional studies in patient-derived cell lines and mice were used to determine mechanisms of pathology.ResultsTwelve missense variants showed strong evidence of pathogenicity. We define a characteristic phenotype of the central nervous system (white matter disturbances, thin corpus callosum, and widened ventricles); global delay with significant alteration of speech, language, and behavior; hypotonia; joint hypermobility; visual system defects; and other common congenital and dysmorphic features. Comparison of in silico and phenotypical features align additional variants of unknown significance with likely pathogenicity. In support of partial loss-of-function mechanisms, using patient-derived cell lines, we show loss of only specific USP9X substrates that regulate neurodevelopmental signaling pathways and a united defect in transforming growth factor β signaling. In addition, we find correlates of the male phenotype in Usp9x brain-specific knockout mice, and further resolve loss of hippocampal-dependent learning and memory.ConclusionsOur data demonstrate the involvement of USP9X variants in a distinctive neurodevelopmental and behavioral syndrome in male subjects and identify plausible mechanisms of pathogenesis centered on disrupted transforming growth factor β signaling and hippocampal function.

Published
2020

11. IRF2BPL Is Associated with Neurological Phenotypes

Author

Marcogliese, Paul C, Shashi, Vandana, Spillmann, Rebecca C, Stong, Nicholas, Rosenfeld, Jill A, Koenig, Mary Kay, Martínez-Agosto, Julián A, Herzog, Matthew, Chen, Agnes H, Dickson, Patricia I, Lin, Henry J, Vera, Moin U, Salamon, Noriko, Graham, John M, Ortiz, Damara, Infante, Elena, Steyaert, Wouter, Dermaut, Bart, Poppe, Bruce, Chung, Hyung-Lok, Zuo, Zhongyuan, Lee, Pei-Tseng, Kanca, Oguz, Xia, Fan, Yang, Yaping, Smith, Edward C, Jasien, Joan, Kansagra, Sujay, Spiridigliozzi, Gail, El-Dairi, Mays, Lark, Robert, Riley, Kacie, Koeberl, Dwight D, Golden-Grant, Katie, Program for Undiagnosed Diseases (UD-PrOZA), Undiagnosed Diseases Network, Yamamoto, Shinya, Wangler, Michael F, Mirzaa, Ghayda, Hemelsoet, Dimitri, Lee, Brendan, Nelson, Stanley F, Goldstein, David B, Bellen, Hugo J, and Pena, Loren DM

Subjects
Genetics & Heredity, ataxia, Human Genome, neurodegeneration, pits, Neurosciences, Undiagnosed Diseases Network, Neurodegenerative, Biological Sciences, CG11138, Medical and Health Sciences, Program for Undiagnosed Diseases, C3HC4 RING finger, Brain Disorders, developmental regression, EAP1, Neurological, Genetics, 2.1 Biological and endogenous factors, Drosophila, hypotonia, Aetiology, seizures, Biotechnology
Abstract

Interferon regulatory factor 2 binding protein-like (IRF2BPL) encodes a member of the IRF2BP family of transcriptional regulators. Currently the biological function of this gene is obscure, and the gene has not been associated with a Mendelian disease. Here we describe seven individuals who carry damaging heterozygous variants in IRF2BPL and are affected with neurological symptoms. Five individuals who carry IRF2BPL nonsense variants resulting in a premature stop codon display severe neurodevelopmental regression, hypotonia, progressive ataxia, seizures, and a lack of coordination. Two additional individuals, both with missense variants, display global developmental delay and seizures and a relatively milder phenotype than those with nonsense alleles. The IRF2BPL bioinformatics signature based on population genomics is consistent with a gene that is intolerant to variation. We show that the fruit-fly IRF2BPL ortholog, called pits (protein interacting with Ttk69 and Sin3A), is broadly detected, including in the nervous system. Complete loss of pits is lethal early in development, whereas partial knockdown with RNA interference in neurons leads to neurodegeneration, revealing a requirement for this gene in proper neuronal function and maintenance. The identified IRF2BPL nonsense variants behave as severe loss-of-function alleles in this model organism, and ectopic expression of the missense variants leads to a range of phenotypes. Taken together, our results show that IRF2BPL and pits are required in the nervous system in humans and flies, and their loss leads to a range of neurological phenotypes in both species.

Published
2018

12. Mutation in the sixth immunoglobulin domain of L1CAM is associated with migrational brain anomalies

Author

Shieh, Christine, Moser, Franklin, Graham, John M, Watiker, Valerie, and Pierson, Tyler Mark

Subjects
Genetics, Neurosciences
Abstract

ObjectiveTo describe the phenotype of a patient with classical features of X-linked L1 syndrome associated with novel brain malformations.MethodsDiagnostic analysis included physical and dysmorphology examinations, MRI of the brain, and exome sequencing of the family trio.ResultsWe report a 2.5-year-old boy with developmental delay, dysmorphic facies, and adducted thumbs. MRI of the brain showed a truncated corpus callosum and periventricular heterotopias associated with polymicrogyria (PMG). Variant segregation analysis with exome sequencing discovered a novel maternally derived hemizygous variant in exon 14 of the L1CAM gene (c.1759 G>C; p.G587R).ConclusionsThis novel L1CAM mutation was located in the protein's sixth immunoglobin domain and involved glycine-587, a key residue in the structure of L1CAM because of its interactions with lysine-606, which indicates that any mutation at this site would likely affect the secondary structure and function of the protein. The replacement of the small nonpolar glycine residue with a large basic arginine would have an even more dramatic result. The presentation of periventricular nodular heterotopias with overlying PMG is very uncommon, and its association with L1CAM may provide insight into other similar cases. Furthermore, this presentation indicates the important role that L1CAM plays in neuronal migration and brain development and extends the phenotype associated with L1CAM-associated disorders.

Published
2015

13. Mutations in PIEZO2 cause Gordon syndrome, Marden-Walker syndrome, and distal arthrogryposis type 5

Author

McMillin, Margaret J, Beck, Anita E, Chong, Jessica X, Shively, Kathryn M, Buckingham, Kati J, Gildersleeve, Heidi IS, Aracena, Mariana I, Aylsworth, Arthur S, Bitoun, Pierre, Carey, John C, Clericuzio, Carol L, Crow, Yanick J, Curry, Cynthia J, Devriendt, Koenraad, Everman, David B, Fryer, Alan, Gibson, Kate, Giovannucci Uzielli, Maria Luisa, Graham, John M, Hall, Judith G, Hecht, Jacqueline T, Heidenreich, Randall A, Hurst, Jane A, Irani, Sarosh, Krapels, Ingrid PC, Leroy, Jules G, Mowat, David, Plant, Gordon T, Robertson, Stephen P, Schorry, Elizabeth K, Scott, Richard H, Seaver, Laurie H, Sherr, Elliott, Splitt, Miranda, Stewart, Helen, Stumpel, Constance, Temel, Sehime G, Weaver, David D, Whiteford, Margo, Williams, Marc S, Tabor, Holly K, Smith, Joshua D, Shendure, Jay, Nickerson, Deborah A, University of Washington Center for Mendelian Genomics, and Bamshad, Michael J

Subjects
Male, Contracture, Blepharophimosis, Medical and Health Sciences, Ion Channels, Congenital, Rare Diseases, Retinal Diseases, Genetics, Humans, 2.1 Biological and endogenous factors, Exome, Dental/Oral and Craniofacial Disease, Aetiology, University of Washington Center for Mendelian Genomics, Connective Tissue Diseases, Child, Preschool, Arthrogryposis, Pediatric, Genetics & Heredity, Ophthalmoplegia, Human Genome, Hand Deformities, Biological Sciences, Pedigree, Cleft Palate, Clubfoot, Arachnodactyly, Mutation, Congenital Structural Anomalies, Female, Abnormalities, Multiple
Abstract

Gordon syndrome (GS), or distal arthrogryposis type 3, is a rare, autosomal-dominant disorder characterized by cleft palate and congenital contractures of the hands and feet. Exome sequencing of five GS-affected families identified mutations in piezo-type mechanosensitive ion channel component 2 (PIEZO2) in each family. Sanger sequencing revealed PIEZO2 mutations in five of seven additional families studied (for a total of 10/12 [83%] individuals), and nine families had an identical c.8057G>A (p.Arg2686His) mutation. The phenotype of GS overlaps with distal arthrogryposis type 5 (DA5) and Marden-Walker syndrome (MWS). Using molecular inversion probes for targeted sequencing to screen PIEZO2, we found mutations in 24/29 (82%) DA5-affected families and one of two MWS-affected families. The presence of cleft palate was significantly associated with c.8057G>A (Fisher's exact test, adjusted p value < 0.0001). Collectively, although GS, DA5, and MWS have traditionally been considered separate disorders, our findings indicate that they are etiologically related and perhaps represent variable expressivity of the same condition.

Published
2014

14. SPEN haploinsufficiency causes a neurodevelopmental disorder overlapping proximal 1p36 deletion syndrome with an episignature of X chromosomes in females

Author

Radio, Francesca Clementina, Pang, Kaifang, Ciolfi, Andrea, Levy, Michael A., Pedace, Lucia, Boer, Elke, Jackson, Adam, Stellacci, Emilia, Lo Cicero, Stefania, Dentici, Maria Lisa, Mcwalter, Kirsty, Sanchez-Lara, Pedro A., Lindstrom, Kristin, Madan-Khetarpal, Suneeta, Mackenzie, Jennifer J., Monteleone, Berrin, Zhou, Dihong, Sawyer, Sarah L., Monteiro, Fabiola Paoli, Macke, Erica L., Maria Iascone, Selicorni, Angelo, Tenconi, Romano, Amor, David J., Stals, Karen, Cabet, Sara, Steindl, Katharina, Weiss, Karin, Castle, Alison M. R., Kalsner, Louisa, Chandler, Kate E., Sheehan, Willow, Shinde, Deepali N., Goodloe, Dana, Bluske, Krista, Faletra, Flavio, Kurtz-Nelson, Evangeline C., Anderlid, Britt-Marie, Barakat, Tahsin Stefan, Graham, John M., Faivre, Laurence, Banka, Siddharth, Wang, Tianyun, Priolo, Manuela, Dallapiccola, Bruno, Vissers, Lisenka E. L. M., Sadikovic, Bekim, Scott, Daryl A., Holder, Jimmy Lloyd, and Tartaglia, Marco

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