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278 results on '"Mercimek-Andrews, Saadet"'

2. Frontiers in congenital disorders of glycosylation consortium, a cross-sectional study report at year 5 of 280 individuals in the natural history cohort

Author

Lam, Christina, Scaglia, Fernando, Berry, Gerard T., Larson, Austin, Sarafoglou, Kyriakie, Andersson, Hans C., Sklirou, Evgenia, Tan, Queenie K.G., Starosta, Rodrigo T., Sadek, Mustafa, Wolfe, Lynne, Horikoshi, Seishu, Ali, May, Barone, Rita, Campbell, Teresa, Chang, Irene J., Coles, Kiaira, Cook, Edward, Eklund, Erik A., Engelhardt, Nicole M., Freeman, Mary, Friedman, Jennifer, Fu, Debbie Y.T., Botzo, Grace, Rawls, Brandy, Hernandez, Christien, Johnsen, Christin, Keller, Kierstin, Kramer, Sara, Kuschel, Bryce, Leshinski, Angela, Martinez-Duncker, Ivan, Mazza, Gina L., Mercimek-Andrews, Saadet, Miller, Bradley S., Muthusamy, Karthik, Neira, Juanita, Patterson, Marc C., Pogorelc, Natalie, Powers, Lex N., Ramey, Elizabeth, Reinhart, Michaela, Squire, Audrey, Thies, Jenny, Vockley, Jerry, Vreugdenhil, Hayden, Witters, Peter, Youbi, Mehdi, Zeighami, Aziza, Zemet, Roni, Edmondson, Andrew C., and Morava, Eva

Published
2024
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3. Etiological involvement of KCND1 variants in an X-linked neurodevelopmental disorder with variable expressivity

Author

Kalm, Tassja, Schob, Claudia, Völler, Hanna, Gardeitchik, Thatjana, Gilissen, Christian, Pfundt, Rolph, Klöckner, Chiara, Platzer, Konrad, Klabunde-Cherwon, Annick, Ries, Markus, Syrbe, Steffen, Beccaria, Francesca, Madia, Francesca, Scala, Marcello, Zara, Federico, Hofstede, Floris, Simon, Marleen E.H., van Jaarsveld, Richard H., Oegema, Renske, van Gassen, Koen L.I., Holwerda, Sjoerd J.B., Barakat, Tahsin Stefan, Bouman, Arjan, van Slegtenhorst, Marjon, Álvarez, Sara, Fernández-Jaén, Alberto, Porta, Javier, Accogli, Andrea, Mancardi, Margherita Maria, Striano, Pasquale, Iacomino, Michele, Chae, Jong-Hee, Jang, SeSong, Kim, Soo Y., Chitayat, David, Mercimek-Andrews, Saadet, Depienne, Christel, Kampmeier, Antje, Kuechler, Alma, Surowy, Harald, Bertini, Enrico Silvio, Radio, Francesca Clementina, Mancini, Cecilia, Pizzi, Simone, Tartaglia, Marco, Gauthier, Lucas, Genevieve, David, Tharreau, Mylène, Azoulay, Noy, Zaks-Hoffer, Gal, Gilad, Nesia K., Orenstein, Naama, Bernard, Geneviève, Thiffault, Isabelle, Denecke, Jonas, Herget, Theresia, Kortüm, Fanny, Kubisch, Christian, Bähring, Robert, and Kindler, Stefan

Published
2024
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7. Evaluation of the diagnostic accuracy of exome sequencing and its impact on diagnostic thinking for patients with rare disease in a publicly funded health care system: A prospective cohort study

Author

Boycott, Kym, Brudno, Michael, Bernier, Francois, van Karnebeek, Clara, Dyment, David, Kernohan, Kristin, Innes, Micheil, Lamont, Ryan, Parboosingh, Jillian, Marshall, Deborah, Marshall, Christian, Mendoza, Roberto, Dowling, James, Hayeems, Robin, Knoppers, Bartha, Lehman, Anna, Mostafavi, Sara, Hartley, Taila, Acker, Meryl, Fooks, Katharine, Gillespie, Meredith K., Price, E. Magda, Graham, Ian D., White-Brown, Alexandre, MacKay, Layla, Macdonald, Stella K., Brady, Lauren, Hui, Angela Y., Andrews, Joseph D., Chowdhury, Ashfia, Wall, Erika, Soubry, Élisabeth, Ediae, Grace U., Rojas, Samantha, Assamad, Daniel, Tarnopolsky, Mark, Sawyer, Sarah L., Chisholm, Caitlin, Lemire, Gabrielle, Amburgey, Kimberly, Lazier, Joanna, Mendoza-Londono, Roberto, Dowling, James J., Balci, Tugce B., Armour, Christine M., Bhola, Priya T., Costain, Gregory, Dupuis, Lucie, Carter, Melissa, Badalato, Lauren, Richer, Julie, Boswell-Patterson, Christie, Kannu, Peter, Cordeiro, Dawn, Warman-Chardon, Jodi, Graham, Gail, Siu, Victoria Mok, Cytrynbaum, Cheryl, Rusnak, Alison, Aul, Ritu B., Yoon, Grace, Gonorazky, Hernan, McNiven, Vanda, Mercimek-Andrews, Saadet, Guerin, Andrea, Deshwar, Ashish R., Marwaha, Ashish, Weksberg, Rosanna, Karp, Natalya, Campbell, Maggie, Al-Qattan, Sarah, Shuen, Andrew Y., Inbar-Feigenberg, Michal, Cohn, Ronald, Szuto, Anna, Inglese, Cara, Poirier, Myriam, Chad, Lauren, Potter, Beth, and Boycott, Kym M.

Published
2024
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8. Person Ability Scores as an Alternative to Norm-Referenced Scores as Outcome Measures in Studies of Neurodevelopmental Disorders.

Author

Farmer, Cristan, Kaat, Aaron, Thurm, Audrey, Anselm, Irina, Akshoomoff, Natacha, Bennett, Amanda, Berry, Leandra, Bruchey, Aleksandra, Barshop, Bruce, Berry-Kravis, Elizabeth, Bianconi, Simona, Cecil, Kim, Davis, Robert, Ficicioglu, Can, Porter, Forbes, Wainer, Allison, Goin-Kochel, Robin, Leonczyk, Caroline, Guthrie, Whitney, Koeberl, Dwight, Love-Nichols, Jamie, Mamak, Eva, Mercimek-Andrews, Saadet, Thomas, Rebecca, Spiridigliozzi, Gail, Sullivan, Nancy, Sutton, Vernon, Udhnani, Manisha, Waisbren, Susan, and Miller, Judith

Subjects
ability score, floor effect, item response theory, neurodevelopmental disorder, outcome measures, Autism Spectrum Disorder, Brain Diseases, Metabolic, Inborn, Child, Creatine, Humans, Mental Retardation, X-Linked, Neurodevelopmental Disorders, Neuropsychological Tests, Outcome Assessment, Health Care, Plasma Membrane Neurotransmitter Transport Proteins, Psychometrics
Abstract

Although norm-referenced scores are essential to the identification of disability, they possess several features which affect their sensitivity to change. Norm-referenced scores often decrease over time among people with neurodevelopmental disorders who exhibit slower-than-average increases in ability. Further, the reliability of norm-referenced scores is lower at the tails of the distribution, resulting in floor effects and increased measurement error for people with neurodevelopmental disorders. In contrast, the person ability scores generated during the process of constructing a standardized test with item response theory are designed to assess change. We illustrate these limitations of norm-referenced scores, and relative advantages of ability scores, using data from studies of autism spectrum disorder and creatine transporter deficiency.

Published
2020

9. 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
Undiagnosed Diseases Network, Animals, Humans, Mice, Ubiquitin Thiolesterase, Transforming Growth Factor beta, Developmental Disabilities, Signal Transduction, Phenotype, Female, Male, Haploinsufficiency, Intellectual Disability, Brain malformation, Deubiquitylating enzyme, Hippocampus, Neurodevelopmental disorder, TGFβ, USP9X, Congenital Structural Anomalies, Genetics, Neurosciences, Pediatric, Mental Health, Behavioral and Social Science, Brain Disorders, Clinical Research, 2.1 Biological and endogenous factors, Aetiology, Neurological, TGF beta, Biological Sciences, Medical and Health Sciences, Psychology and Cognitive Sciences, Psychiatry
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

12. Disruptive mutations in TANC2 define a neurodevelopmental syndrome associated with psychiatric disorders.

Author

Guo, Hui, Bettella, Elisa, Marcogliese, Paul, Zhao, Rongjuan, Andrews, Jonathan, Nowakowski, Tomasz, Gillentine, Madelyn, Hoekzema, Kendra, Wang, Tianyun, Wu, Huidan, Jangam, Sharayu, Liu, Cenying, Ni, Hailun, Willemsen, Marjolein, van Bon, Bregje, Rinne, Tuula, Stevens, Servi, Kleefstra, Tjitske, Brunner, Han, Yntema, Helger, Long, Min, Zhao, Wenjing, Hu, Zhengmao, Colson, Cindy, Richard, Nicolas, Schwartz, Charles, Romano, Corrado, Castiglia, Lucia, Bottitta, Maria, Dhar, Shweta, Erwin, Deanna, Emrick, Lisa, Keren, Boris, Afenjar, Alexandra, Zhu, Baosheng, Bai, Bing, Stankiewicz, Pawel, Mercimek-Andrews, Saadet, Juusola, Jane, Wilfert, Amy, Abou Jamra, Rami, Büttner, Benjamin, Mefford, Heather, Muir, Alison, Scheffer, Ingrid, Regan, Brigid, Malone, Stephen, Gecz, Jozef, Cobben, Jan, Weiss, Marjan, Waisfisz, Quinten, Bijlsma, Emilia, Hoffer, Mariëtte, Ruivenkamp, Claudia, Sartori, Stefano, Xia, Fan, Rosenfeld, Jill, Bernier, Raphael, Wangler, Michael, Yamamoto, Shinya, Xia, Kun, Stegmann, Alexander, Bellen, Hugo, Murgia, Alessandra, Eichler, Evan, and Herman, Kristin

Subjects
Adolescent, Adult, Animals, Autistic Disorder, Behavior, Animal, Brain, Child, Child, Preschool, Craniofacial Abnormalities, Developmental Disabilities, Drosophila Proteins, Drosophila melanogaster, Epilepsy, Female, Humans, Intellectual Disability, Language Development Disorders, Male, Membrane Proteins, Mental Disorders, Muscle Proteins, Mutation, Nerve Tissue Proteins, Neurodevelopmental Disorders, Neuroglia, Neurons, Proteins, Exome Sequencing, Young Adult
Abstract

Postsynaptic density (PSD) proteins have been implicated in the pathophysiology of neurodevelopmental and psychiatric disorders. Here, we present detailed clinical and genetic data for 20 patients with likely gene-disrupting mutations in TANC2-whose protein product interacts with multiple PSD proteins. Pediatric patients with disruptive mutations present with autism, intellectual disability, and delayed language and motor development. In addition to a variable degree of epilepsy and facial dysmorphism, we observe a pattern of more complex psychiatric dysfunction or behavioral problems in adult probands or carrier parents. Although this observation requires replication to establish statistical significance, it also suggests that mutations in this gene are associated with a variety of neuropsychiatric disorders consistent with its postsynaptic function. We find that TANC2 is expressed broadly in the human developing brain, especially in excitatory neurons and glial cells, but shows a more restricted pattern in Drosophila glial cells where its disruption affects behavioral outcomes.

Published
2019

14. Genetic landscape of primary mitochondrial diseases in children and adults using molecular genetics and genomic investigations of mitochondrial and nuclear genome.

Author

Ambrose, Anastasia, Bahl, Shalini, Sharma, Saloni, Zhang, Dan, Hung, Clara, Jain-Ghai, Shailly, Chan, Alicia, and Mercimek-Andrews, Saadet

Abstract

Background: Primary mitochondrial diseases (PMD) are one of the most common metabolic genetic disorders. They are due to pathogenic variants in the mitochondrial genome (mtDNA) or nuclear genome (nDNA) that impair mitochondrial function and/or structure. We hypothesize that there is overlap between PMD and other genetic diseases that are mimicking PMD. For this reason, we performed a retrospective cohort study. Methods: All individuals with suspected PMD that underwent molecular genetic and genomic investigations were included. Individuals were grouped for comparison: (1) individuals with mtDNA-PMD; (2) individuals with nDNA-PMD; (3) individuals with other genetic diseases mimicking PMD (non-PMD); (4) individuals without a confirmed genetic diagnosis. Results: 297 individuals fulfilled inclusion criteria. The diagnostic yield of molecular genetics and genomic investigations was 31.3%, including 37% for clinical exome sequencing and 15.8% for mitochondrial genome sequencing. We identified 71 individuals with PMD (mtDNA n = 41, nDNA n = 30) and 22 individuals with non-PMD. Adults had higher percentage of mtDNA-PMD compared to children (p-value = 0.00123). There is a statistically significant phenotypic difference between children and adults with PMD. Conclusion: We report a large cohort of individuals with PMD and the diagnostic yield of urine mitochondrial genome sequencing (16.1%). We think liver phenotype might be progressive and should be studied further in PMD. We showed a relationship between non-PMD genes and their indirect effects on mitochondrial machinery. Differentiation of PMD from non-PMD can be achieved using specific phenotypes as there was a statistically significant difference for muscular, cardiac, and ophthalmologic phenotypes, seizures, hearing loss, peripheral neuropathy in PMD group compared to non-PMD group. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Review of clinical trials and guidelines for children and youth with mucopolysaccharidosis: outcome selection and measurement.

Author

Howie, Alison H., Tingley, Kylie, Inbar-Feigenberg, Michal, Mitchell, John J., Angel, Kim, Gentle, Jenifer, Smith, Maureen, Offringa, Martin, Butcher, Nancy J., Campeau, Philippe M., Chakraborty, Pranesh, Chan, Alicia, Fergusson, Dean, Mamak, Eva, McClelland, Peyton, Mercimek-Andrews, Saadet, Mhanni, Aizeddin, Moazin, Zeinab, Rockman-Greenberg, Cheryl, and Rupar, C. Anthony

Subjects
DATABASE searching, CONSENSUS (Social sciences), DRUG side effects, DATABASES, CLINICAL trials
Abstract

Background: To inform the development of a core outcome set (COS) for children and youth with mucopolysaccharidoses (MPS), we aimed to identify all outcomes and associated outcome measurement instruments that are reported in recent clinical trials and recommended as measurements in clinical management guidelines. Methods: To identify English-language clinical trials and guidelines pertaining to MPS published between 2011 and mid-2021, we applied a comprehensive peer-reviewed search strategy to relevant databases and registers on May 16, 2021. Two reviewers independently screened retrieved citations and then full-text articles to determine eligibility for inclusion. From articles meeting inclusion criteria, we extracted details of the study design, population, intervention, and comparator, along with verbatim outcomes and associated outcome measurement instruments. Outcomes were organized into domains within five a priori core areas: life impact, pathophysiological manifestations, growth and development, resource use, and death. We conducted descriptive analyses at the study level, grouping articles arising from the same study. Results: From 2593 unique citations, 73 articles from 61 unique studies were included in the review, pertaining to all MPS subtypes except for exceptionally rare subtypes. Eighty-four unique outcomes were reported across the studies, 33 (39%) of which were reported by three or fewer studies. Most outcomes (55; 65%) were in the pathophysiological manifestations core area, followed by life impact (17; 20%) and growth and development (10; 12%); one outcome each pertained to resource use and death. The most frequently reported outcomes were general adverse events (45; 74%), immune-related adverse events (39; 64%), and urinary glycosaminoglycans (38; 62%). Substantial variability existed in the reporting of outcome measurement instruments. Some differences in outcome reporting were observed by MPS subtype and publication year. Discussion: Outcomes reported in clinical trials and guidelines for MPS in children and youth vary considerably and largely focus on pathophysiological manifestations. A COS is needed to standardize the selection and measurement of meaningful outcomes across future studies. We will present the outcomes identified in this review to knowledge users as part of a consensus process to select the most critical outcomes for inclusion in the COS. Trial Registration The protocol for this study was registered in PROSPERO (CRD42021267531) and in the COMET Database. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Reduced guanidinoacetate in plasma of patients with autosomal dominant Fanconi syndrome due to heterozygous P341L GATM variant and study of organoids towards treatment.

Author

Portales‐Castillo, Ignacio, Singal, Rhea, Ambrose, Anastasia, Song, Jong Hee, Son, Minsoo, Goo, Young Ah., Zhou, Wen, Traum, Avram Z., Coler‐Reilly, Ariella, Humphreys, Benjamin D., Civitelli, Roberto, Jüppner, Harald, Lundquist, Andrew L., Seres, Peter, Allegretti, Andrew S., and Mercimek‐Andrews, Saadet

Published
2024
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17. De Novo and Inherited Loss-of-Function Variants in TLK2: Clinical and Genotype-Phenotype Evaluation of a Distinct Neurodevelopmental Disorder

Author

Reijnders, Margot RF, Miller, Kerry A, Alvi, Mohsan, Goos, Jacqueline AC, Lees, Melissa M, de Burca, Anna, Henderson, Alex, Kraus, Alison, Mikat, Barbara, de Vries, Bert BA, Isidor, Bertrand, Kerr, Bronwyn, Marcelis, Carlo, Schluth-Bolard, Caroline, Deshpande, Charu, Ruivenkamp, Claudia AL, Wieczorek, Dagmar, Study, The Deciphering Developmental Disorders, Baralle, Diana, Blair, Edward M, Engels, Hartmut, Lüdecke, Hermann-Josef, Eason, Jacqueline, Santen, Gijs WE, Clayton-Smith, Jill, Chandler, Kate, Tatton-Brown, Katrina, Payne, Katelyn, Helbig, Katherine, Radtke, Kelly, Nugent, Kimberly M, Cremer, Kirsten, Strom, Tim M, Bird, Lynne M, Sinnema, Margje, Bitner-Glindzicz, Maria, van Dooren, Marieke F, Alders, Marielle, Koopmans, Marije, Brick, Lauren, Kozenko, Mariya, Harline, Megan L, Klaassens, Merel, Steinraths, Michelle, Cooper, Nicola S, Edery, Patrick, Yap, Patrick, Terhal, Paulien A, van der Spek, Peter J, Lakeman, Phillis, Taylor, Rachel L, Littlejohn, Rebecca O, Pfundt, Rolph, Mercimek-Andrews, Saadet, Stegmann, Alexander PA, Kant, Sarina G, McLean, Scott, Joss, Shelagh, Swagemakers, Sigrid MA, Douzgou, Sofia, Wall, Steven A, Küry, Sébastien, Calpena, Eduardo, Koelling, Nils, McGowan, Simon J, Twigg, Stephen RF, Mathijssen, Irene MJ, Nellaker, Christoffer, Brunner, Han G, and Wilkie, Andrew OM

Subjects
Biological Sciences, Bioinformatics and Computational Biology, Biomedical and Clinical Sciences, Genetics, Biotechnology, Brain Disorders, Human Genome, Neurosciences, Clinical Research, Aetiology, 2.1 Biological and endogenous factors, Adolescent, Adult, Base Sequence, Cell Line, Child, Child, Preschool, Facies, Female, Genetic Association Studies, Humans, Infant, Inheritance Patterns, Loss of Function Mutation, Male, Neurodevelopmental Disorders, Protein Kinases, RNA, Messenger, Translocation, Genetic, Young Adult, Deciphering Developmental Disorders Study, Tousled-like, facial averaging, haploinsufficiency, intellectual disability, kinase, Medical and Health Sciences, Genetics & Heredity, Biological sciences, Biomedical and clinical sciences, Health sciences
Abstract

Next-generation sequencing is a powerful tool for the discovery of genes related to neurodevelopmental disorders (NDDs). Here, we report the identification of a distinct syndrome due to de novo or inherited heterozygous mutations in Tousled-like kinase 2 (TLK2) in 38 unrelated individuals and two affected mothers, using whole-exome and whole-genome sequencing technologies, matchmaker databases, and international collaborations. Affected individuals had a consistent phenotype, characterized by mild-borderline neurodevelopmental delay (86%), behavioral disorders (68%), severe gastro-intestinal problems (63%), and facial dysmorphism including blepharophimosis (82%), telecanthus (74%), prominent nasal bridge (68%), broad nasal tip (66%), thin vermilion of the upper lip (62%), and upslanting palpebral fissures (55%). Analysis of cell lines from three affected individuals showed that mutations act through a loss-of-function mechanism in at least two case subjects. Genotype-phenotype analysis and comparison of computationally modeled faces showed that phenotypes of these and other individuals with loss-of-function variants significantly overlapped with phenotypes of individuals with other variant types (missense and C-terminal truncating). This suggests that haploinsufficiency of TLK2 is the most likely underlying disease mechanism, leading to a consistent neurodevelopmental phenotype. This work illustrates the power of international data sharing, by the identification of 40 individuals from 26 different centers in 7 different countries, allowing the identification, clinical delineation, and genotype-phenotype evaluation of a distinct NDD caused by mutations in TLK2.

Published
2018

19. Clinical Characteristics of Creatine Transporter Deficiency (CTD): Final Results of the Vigilan Observational Study (P8-8.002)

Author

Brandabur, Melanie, primary, Bianconi, Simona, additional, Anselm, Irina, additional, Barshop, Bruce A., additional, Berry-Kravis, Elizabeth, additional, Koeberl, Dwight D., additional, Cecil, Kim M., additional, Hannah-Shmouni, Fady, additional, Longo, Nicola, additional, Mercimek-Andrews, Saadet, additional, Porter, Forbes D., additional, Rahhal, Samar, additional, Sutton, Reid, additional, Blair, Susan, additional, Cimms, Tricia, additional, Zhang, Lin, additional, PhD, Cristan Farmer, additional, Thurm, Audrey, additional, and Miller, Judith, additional

Published
2024
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21. The continuously evolving phenotype of succinic semialdehyde dehydrogenase deficiency

Author

Julia‐Palacios, Natalia Alexandra, primary, Kuseyri Hübschmann, Oya, additional, Olivella, Mireia, additional, Pons, Roser, additional, Horvath, Gabriella, additional, Lücke, Thomas, additional, Fung, Cheuk‐Wing, additional, Wong, Suet‐Na, additional, Cortès‐Saladelafont, Elisenda, additional, Rovira‐Remisa, M. Mar, additional, Yıldız, Yılmaz, additional, Mercimek‐Andrews, Saadet, additional, Assmann, Birgit, additional, Stevanović, Galina, additional, Manti, Filippo, additional, Brennenstuhl, Heiko, additional, Jung‐Klawitter, Sabine, additional, Jeltsch, Kathrin, additional, Sivri, H. Serap, additional, Garbade, Sven F., additional, García‐Cazorla, Àngels, additional, and Opladen, Thomas, additional

Published
2024
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24. PIGG variant pathogenicity assessment reveals characteristic features within 19 families

Author

Tremblay-Laganière, Camille, Maroofian, Reza, Nguyen, Thi Tuyet Mai, Karimiani, Ehsan Ghayoor, Kirmani, Salman, Akbar, Fizza, Ibrahim, Shahnaz, Afroze, Bushra, Doosti, Mohammad, Ashrafzadeh, Farah, Babaei, Meisam, Efthymiou, Stephanie, Christoforou, Marilena, Sultan, Tipu, Ladda, Roger L., McLaughlin, Heather M., Truty, Rebecca, Mahida, Sonal, Cohen, Julie S., Baranano, Kristin, Ismail, Fatima Y., Patel, Millan S., Lehman, Anna, Edmondson, Andrew C., Nagy, Amanda, Walker, Melissa A., Mercimek-Andrews, Saadet, Maki, Yuta, Sachdev, Rani, Macintosh, Rebecca, Palmer, Elizabeth E., Mancini, Grazia M.S., Barakat, Tahsin Stefan, Steinfeld, Robert, Rüsch, Christina T., Stettner, Georg M., Wagner, Matias, Wortmann, Saskia B., Kini, Usha, Brady, Angela F., Stals, Karen L., Ismayilova, Naila, Ellard, Sian, Bernardo, Danilo, Nugent, Kimberly, McLean, Scott D., Antonarakis, Stylianos E., Houlden, Henry, Kinoshita, Taroh, Campeau, Philippe M., and Murakami, Yoshiko

Published
2021
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25. Disruption of NEUROD2 causes a neurodevelopmental syndrome with autistic features via cell-autonomous defects in forebrain glutamatergic neurons

Author

Runge, Karen, Mathieu, Rémi, Bugeon, Stéphane, Lafi, Sahra, Beurrier, Corinne, Sahu, Surajit, Schaller, Fabienne, Loubat, Arthur, Herault, Leonard, Gaillard, Stéphane, Pallesi-Pocachard, Emilie, Montheil, Aurélie, Bosio, Andreas, Rosenfeld, Jill A., Hudson, Eva, Lindstrom, Kristin, Mercimek-Andrews, Saadet, Jeffries, Lauren, van Haeringen, Arie, Vanakker, Olivier, Van Hecke, Audrey, Amrom, Dina, Küry, Sebastien, Ratner, Chana, Jethva, Reena, Gamble, Candace, Jacq, Bernard, Fasano, Laurent, Santpere, Gabriel, Lorente-Galdos, Belen, Sestan, Nenad, Gelot, Antoinette, Giacuzz, Sylvie, Goebbels, Sandra, Represa, Alfonso, Cardoso, Carlos, Cremer, Harold, and de Chevigny, Antoine

Published
2021
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26. Functional divergence of the two Elongator subcomplexes during neurodevelopment

Author

Gaik, Monika, Kojic, Marija, Stegeman, Megan R, Öncü‐Öner, Tülay, Kościelniak, Anna, Jones, Alun, Mohamed, Ahmed, Chau, Pak Yan Stefanie, Sharmin, Sazia, Chramiec‐Głąbik, Andrzej, Indyka, Paulina, Rawski, Michał, Biela, Anna, Dobosz, Dominika, Millar, Amanda, Chau, Vann, Ünalp, Aycan, Piper, Michael, Bellingham, Mark C, Eichler, Evan E, Nickerson, Deborah A, Güleryüz, Handan, Abbassi, Nour El Hana, Jazgar, Konrad, Davis, Melissa J, Mercimek‐Andrews, Saadet, Cingöz, Sultan, Wainwright, Brandon J, and Glatt, Sebastian

Published
2022
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27. Etiological involvement of KCND1 variants in an X-linked neurodevelopmental disorder with variable expressivity

Author

Integrale & Alg. Kindergen Patientenzorg, Child Health, Genetica Klinische Genetica, Genetica Sectie Genoomdiagnostiek, Brain, Kalm, Tassja, Schob, Claudia, Völler, Hanna, Gardeitchik, Thatjana, Gilissen, Christian, Pfundt, Rolph, Klöckner, Chiara, Platzer, Konrad, Klabunde-Cherwon, Annick, Ries, Markus, Syrbe, Steffen, Beccaria, Francesca, Madia, Francesca, Scala, Marcello, Zara, Federico, Hofstede, Floris, Simon, Marleen E H, van Jaarsveld, Richard H, Oegema, Renske, van Gassen, Koen L I, Holwerda, Sjoerd J B, Barakat, Tahsin Stefan, Bouman, Arjan, van Slegtenhorst, Marjon, Álvarez, Sara, Fernández-Jaén, Alberto, Porta, Javier, Accogli, Andrea, Mancardi, Margherita Maria, Striano, Pasquale, Iacomino, Michele, Chae, Jong-Hee, Jang, SeSong, Kim, Soo Y, Chitayat, David, Mercimek-Andrews, Saadet, Depienne, Christel, Kampmeier, Antje, Kuechler, Alma, Surowy, Harald, Bertini, Enrico Silvio, Radio, Francesca Clementina, Mancini, Cecilia, Pizzi, Simone, Tartaglia, Marco, Gauthier, Lucas, Genevieve, David, Tharreau, Mylène, Azoulay, Noy, Zaks-Hoffer, Gal, Gilad, Nesia K, Orenstein, Naama, Bernard, Geneviève, Thiffault, Isabelle, Denecke, Jonas, Herget, Theresia, Kortüm, Fanny, Kubisch, Christian, Bähring, Robert, Kindler, Stefan, Integrale & Alg. Kindergen Patientenzorg, Child Health, Genetica Klinische Genetica, Genetica Sectie Genoomdiagnostiek, Brain, Kalm, Tassja, Schob, Claudia, Völler, Hanna, Gardeitchik, Thatjana, Gilissen, Christian, Pfundt, Rolph, Klöckner, Chiara, Platzer, Konrad, Klabunde-Cherwon, Annick, Ries, Markus, Syrbe, Steffen, Beccaria, Francesca, Madia, Francesca, Scala, Marcello, Zara, Federico, Hofstede, Floris, Simon, Marleen E H, van Jaarsveld, Richard H, Oegema, Renske, van Gassen, Koen L I, Holwerda, Sjoerd J B, Barakat, Tahsin Stefan, Bouman, Arjan, van Slegtenhorst, Marjon, Álvarez, Sara, Fernández-Jaén, Alberto, Porta, Javier, Accogli, Andrea, Mancardi, Margherita Maria, Striano, Pasquale, Iacomino, Michele, Chae, Jong-Hee, Jang, SeSong, Kim, Soo Y, Chitayat, David, Mercimek-Andrews, Saadet, Depienne, Christel, Kampmeier, Antje, Kuechler, Alma, Surowy, Harald, Bertini, Enrico Silvio, Radio, Francesca Clementina, Mancini, Cecilia, Pizzi, Simone, Tartaglia, Marco, Gauthier, Lucas, Genevieve, David, Tharreau, Mylène, Azoulay, Noy, Zaks-Hoffer, Gal, Gilad, Nesia K, Orenstein, Naama, Bernard, Geneviève, Thiffault, Isabelle, Denecke, Jonas, Herget, Theresia, Kortüm, Fanny, Kubisch, Christian, Bähring, Robert, and Kindler, Stefan

Published
2024

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

Author

Pena, Loren, Shashi, Vandana, Schoch, Kelly, Sullivan, Jennifer A., Acosta, Maria T., Adams, David R., Aday, Aaron, Alejandro, Mercedes E., Allard, Patrick, Ashley, Euan A., Azamian, Mahshid S., Bacino, Carlos A., Bademci, Guney, Baker, Eva, Balasubramanyam, Ashok, Baldridge, Dustin, Barbouth, Deborah, Batzli, Gabriel F., Beggs, Alan H., Bellen, Hugo J., Bernstein, Jonathan A., Berry, Gerard T., Bican, Anna, Bick, David P., Birch, Camille L., Bivona, Stephanie, Bonnenmann, Carsten, Bonner, Devon, Boone, Braden E., Bostwick, Bret L., Briere, Lauren C., Brokamp, Elly, Brown, Donna M., Brush, Matthew, Burke, Elizabeth A., Burrage, Lindsay C., Butte, Manish J., Carrasquillo, Olveen, Peter Chang, Ta Chen, Chao, Hsiao-Tuan, Clark, Gary D., Coakley, Terra R., Cobban, Laurel A., Cogan, Joy D., Cole, F. Sessions, Colley, Heather A., Cooper, Cynthia M., Cope, Heidi, Craigen, William J., D'Souza, Precilla, Dasari, Surendra, Davids, Mariska, Davidson, Jean M., Dayal, Jyoti G., Dell'Angelica, Esteban C., Dhar, Shweta U., Dorrani, Naghmeh, Dorset, Daniel C., Douine, Emilie D., Draper, David D., Dries, Annika M., Duncan, Laura, Eckstein, David J., Emrick, Lisa T., Eng, Christine M., Enns, Gregory M., Esteves, Cecilia, Estwick, Tyra, Fernandez, Liliana, Ferreira, Carlos, Fieg, Elizabeth L., Fisher, Paul G., Fogel, Brent L., Forghani, Irman, Friedman, Noah D., Gahl, William A., Godfrey, Rena A., Goldman, Alica M., Goldstein, David B., Gourdine, Jean-Philippe F., Grajewski, Alana, Groden, Catherine A., Gropman, Andrea L., Haendel, Melissa, Hamid, Rizwan, Hanchard, Neil A., High, Frances, Holm, Ingrid A., Hom, Jason, Huang, Alden, Huang, Yong, Isasi, Rosario, Jamal, Fariha, Jiang, Yong-hui, Johnston, Jean M., Jones, Angela L., Karaviti, Lefkothea, Kelley, Emily G., Koeller, David M., Kohane, Isaac S., Kohler, Jennefer N., Krakow, Deborah, Krasnewich, Donna M., Korrick, Susan, Koziura, Mary, Krier, Joel B., Kyle, Jennifer E., Lalani, Seema R., Lam, Byron, Lanpher, Brendan C., Lanza, Ian R., Lau, C. Christopher, Lazar, Jozef, LeBlanc, Kimberly, Lee, Brendan H., Lee, Hane, Levitt, Roy, Levy, Shawn E., Lewis, Richard A., Lincoln, Sharyn A., Liu, Pengfei, Liu, Xue Zhong, Loo, Sandra K., Loscalzo, Joseph, Maas, Richard L., Macnamara, Ellen F., MacRae, Calum A., Maduro, Valerie V., Majcherska, Marta M., Malicdan, May Christine V., Mamounas, Laura A., Manolio, Teri A., Markello, Thomas C., Marom, Ronit, Martin, Martin G., Martínez-Agosto, Julian A., Marwaha, Shruti, May, Thomas, McCauley, Jacob, McConkie-Rosell, Allyn, McCormack, Colleen E., McCray, Alexa T., Merker, Jason D., Metz, Thomas O., Might, Matthew, Morava-Kozicz, Eva, Moretti, Paolo M., Morimoto, Marie, Mulvihill, John J., Murdock, David R., Nath, Avi, Nelson, Stan F., Newberry, J. Scott, Newman, John H., Nicholas, Sarah K., Novacic, Donna, Oglesbee, Devin, Orengo, James P., Pak, Stephen, Pallais, J. Carl, Palmer, Christina GS., Papp, Jeanette C., Parker, Neil H., Phillips, John A., III, Posey, Jennifer E., Postlethwait, John H., Potocki, Lorraine, Pusey, Barbara N., Renteri, Genecee, Reuter, Chloe M., Rives, Lynette, Robertson, Amy K., Rodan, Lance H., Rosenfeld, Jill A., Rowley, Robb K., Sacco, Ralph, Sampson, Jacinda B., Samson, Susan L., Saporta, Mario, Schaechter, Judy, Schedl, Timothy, Scott, Daryl A., Shakachite, Lisa, Sharma, Prashant, Shields, Kathleen, Shin, Jimann, Signer, Rebecca, Sillari, Catherine H., Silverman, Edwin K., Sinsheimer, Janet S., Smith, Kevin S., Solnica-Krezel, Lilianna, Spillmann, Rebecca C., Stoler, Joan M., Stong, Nicholas, Sweetser, David A., Tamburro, Cecelia P., Tan, Queenie K.-G., Tekin, Mustafa, Telischi, Fred, Thorson, Willa, Tifft, Cynthia J., Toro, Camilo, Tran, Alyssa A., Urv, Tiina K., Vogel, Tiphanie P., Waggott, Daryl M., Wahl, Colleen E., Walley, Nicole M., Walsh, Chris A., Walker, Melissa, Wambach, Jennifer, Wan, Jijun, Wang, Lee-kai, Wangler, Michael F., Ward, Patricia A., Waters, Katrina M., Webb-Robertson, Bobbie-Jo M., Wegner, Daniel, Westerfield, Monte, Wheeler, Matthew T., Wise, Anastasia L., Wolfe, Lynne A., Woods, Jeremy D., Worthey, Elizabeth A., Yamamoto, Shinya, Yang, John, Yoon, Amanda J., Yu, Guoyun, Zastrow, Diane B., Zhao, Chunli, Zuchner, Stephan, Gahl, William, 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, 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., 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 J.V., Reijnders, Margot R.F., Demirdas, Serwet, Koboldt, Daniel C., Bartholomew, Dennis, Mosher, Theresa Mihalic, Hickey, Scott E., Shieh, Christine, Sanchez-Lara, Pedro A., Graham, John M., Jr., Tezcan, Kamer, Schaefer, G.B., Danylchuk, Noelle R., Asamoah, Alexander, Jackson, Kelly E., Yachelevich, Naomi, Au, Margaret, Pérez-Jurado, Luis A., Kleefstra, Tjitske, Penzes, Peter, Wood, Stephen A., Burne, Thomas, Pierson, Tyler Mark, Piper, Michael, Gécz, Jozef, and Jolly, Lachlan A.

Published
2020
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30. Evaluation of the diagnostic accuracy of exome sequencing and its impact on diagnostic thinking for patients with rare disease in a publicly funded health care system: A prospective cohort study

Author

Hartley, Taila, primary, Marshall, Deborah, additional, Acker, Meryl, additional, Fooks, Katharine, additional, Gillespie, Meredith K., additional, Price, E. Magda, additional, Graham, Ian D., additional, White-Brown, Alexandre, additional, MacKay, Layla, additional, Macdonald, Stella K., additional, Brady, Lauren, additional, Hui, Angela Y., additional, Andrews, Joseph D., additional, Chowdhury, Ashfia, additional, Wall, Erika, additional, Soubry, Élisabeth, additional, Ediae, Grace U., additional, Rojas, Samantha, additional, Assamad, Daniel, additional, Dyment, David, additional, Tarnopolsky, Mark, additional, Sawyer, Sarah L., additional, Chisholm, Caitlin, additional, Lemire, Gabrielle, additional, Amburgey, Kimberly, additional, Lazier, Joanna, additional, Mendoza-Londono, Roberto, additional, Dowling, James J., additional, Balci, Tugce B., additional, Armour, Christine M., additional, Bhola, Priya T., additional, Costain, Gregory, additional, Dupuis, Lucie, additional, Carter, Melissa, additional, Badalato, Lauren, additional, Richer, Julie, additional, Boswell-Patterson, Christie, additional, Kannu, Peter, additional, Cordeiro, Dawn, additional, Warman-Chardon, Jodi, additional, Graham, Gail, additional, Siu, Victoria Mok, additional, Cytrynbaum, Cheryl, additional, Rusnak, Alison, additional, Aul, Ritu B., additional, Yoon, Grace, additional, Gonorazky, Hernan, additional, McNiven, Vanda, additional, Mercimek-Andrews, Saadet, additional, Guerin, Andrea, additional, Deshwar, Ashish R., additional, Marwaha, Ashish, additional, Weksberg, Rosanna, additional, Karp, Natalya, additional, Campbell, Maggie, additional, Al-Qattan, Sarah, additional, Shuen, Andrew Y., additional, Inbar-Feigenberg, Michal, additional, Cohn, Ronald, additional, Szuto, Anna, additional, Inglese, Cara, additional, Poirier, Myriam, additional, Chad, Lauren, additional, Potter, Beth, additional, Boycott, Kym M., additional, Hayeems, Robin, additional, Boycott, Kym, additional, Brudno, Michael, additional, Bernier, Francois, additional, van Karnebeek, Clara, additional, Kernohan, Kristin, additional, Innes, Micheil, additional, Lamont, Ryan, additional, Parboosingh, Jillian, additional, Marshall, Christian, additional, Mendoza, Roberto, additional, Dowling, James, additional, Knoppers, Bartha, additional, Lehman, Anna, additional, and Mostafavi, Sara, additional

Published
2024
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32. Assessing the quality and value of metabolic chart data for capturing core outcomes for pediatric medium-chain acyl-CoA dehydrogenase (MCAD) deficiency

Author

Iverson, Ryan, primary, Taljaard, Monica, additional, Geraghty, Michael T., additional, Pugliese, Michael, additional, Tingley, Kylie, additional, Coyle, Doug, additional, Kronick, Jonathan B., additional, Wilson, Kumanan, additional, Austin, Valerie, additional, Brunel-Guitton, Catherine, additional, Buhas, Daniela, additional, Butcher, Nancy J., additional, Chan, Alicia K. J., additional, Dyack, Sarah, additional, Goobie, Sharan, additional, Greenberg, Cheryl R., additional, Jain-Ghai, Shailly, additional, Inbar-Feigenberg, Michal, additional, Karp, Natalya, additional, Kozenko, Mariya, additional, Langley, Erica, additional, Lines, Matthew, additional, Little, Julian, additional, MacKenzie, Jennifer, additional, Maranda, Bruno, additional, Mercimek-Andrews, Saadet, additional, Mhanni, Aizeddin, additional, Mitchell, John J., additional, Nagy, Laura, additional, Offringa, Martin, additional, Pender, Amy, additional, Potter, Murray, additional, Prasad, Chitra, additional, Ratko, Suzanne, additional, Salvarinova, Ramona, additional, Schulze, Andreas, additional, Siriwardena, Komudi, additional, Sondheimer, Neal, additional, Sparkes, Rebecca, additional, Stockler-Ipsiroglu, Sylvia, additional, Tapscott, Kendra, additional, Trakadis, Yannis, additional, Turner, Lesley, additional, Van Karnebeek, Clara, additional, Vandersteen, Anthony, additional, Walia, Jagdeep S., additional, Wilson, Brenda J., additional, Yu, Andrea C., additional, Potter, Beth K., additional, and Chakraborty, Pranesh, additional

Published
2024
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33. Next generation of free? Points to consider when navigating sponsored genetic testing.

Author

Bartels, Kirsten, Afonso, Samantha, Brown, Lindsay, Carriles, Claudia, Kim, Raymond, Lazier, Joanna, Mercimek-Andrews, Saadet, Nelson, Tanya N., Stedman, Ian, Thain, Emily, Vanneste, Rachel, and Chad, Lauren

Abstract

Genetics has been integrated into patient care across many subspecialties. However, genetic and genomic testing (GT) remain expensive with disparities in access both within Canada and internationally. It is, therefore, not surprising that sponsored GT has emerged as one alternative. Sponsored GT, for the purpose of this document, refers to clinical-grade GT partially or fully subsidised by industry. In return, industry sponsors--usually pharmaceutical or biotechnology companies--may have access to patients' genetic data, practitioner information, DNA and/or other information. The availability of sponsored GT options in the Canadian healthcare landscape has appeared to simplify patient and practitioner access to GT, but the potential ethical and legal considerations, as well as the nuances of a publicly funded healthcare system, must also be considered. This document offers preliminary guidance for Canadian healthcare practitioners encountering sponsored GT in practice. Further research and dialogue is urgently needed to explore this issue to provide fulsome considerations that one must be aware of when availing such options. [ABSTRACT FROM AUTHOR]

Published
2024
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36. Correction: Disruption of NEUROD2 causes a neurodevelopmental syndrome with autistic features via cell-autonomous defects in forebrain glutamatergic neurons

Author

Runge, Karen, Mathieu, Rémi, Bugeon, Stéphane, Lafi, Sahra, Beurrier, Corinne, Sahu, Surajit, Schaller, Fabienne, Loubat, Arthur, Herault, Leonard, Gaillard, Stéphane, Pallesi-Pocachard, Emilie, Montheil, Aurélie, Bosio, Andreas, Rosenfeld, Jill A., Hudson, Eva, Lindstrom, Kristin, Mercimek-Andrews, Saadet, Jeffries, Lauren, van Haeringen, Arie, Vanakker, Olivier, Van Hecke, Audrey, Amrom, Dina, Küry, Sebastien, Ratner, Chana, Jethva, Reena, Gamble, Candace, Jacq, Bernard, Fasano, Laurent, Santpere, Gabriel, Lorente-Galdos, Belen, Sestan, Nenad, Gelot, Antoinette, Giacuzz, Sylvie, Goebbels, Sandra, Represa, Alfonso, Cardoso, Carlos, Cremer, Harold, and de Chevigny, Antoine

Published
2021
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38. Untargeted metabolomics and infrared ion spectroscopy identify biomarkers for pyridoxine-dependent epilepsy

Author

Engelke, Udo F.H., van Outersterp, Rianne E., Merx, Jona, van Geenen, Fred A.M.G., van Rooij, Arno, Berden, Giel, Huigen, Marleen C.D.G., Kluijtmans, Leo A.J., Peters, Tessa M.A., Shekaili, Hilal H. Al-, Leavitt, Blair R., de Vrieze, Erik, Broekman, Sanne, van Wijk, Erwin, Tseng, Laura A., Kulkarni, Purva, Rutjes, Floris P.J.T., Mecinovic, Jasmin, Struys, Eduard A., Jansen, Laura A., Gospe, Sidney M., Jr., Mercimek-Andrews, Saadet, Hyland, Keith, Willemsen, Michel A.A.P., Bok, Levinus A., van Karnebeek, Clara D.M., Wevers, Ron A., Boltje, Thomas J., Oomens, Jos, Martens, Jonathan, and Coene, Karlien L.M.

Subjects
Infrared spectroscopy -- Methods, Metabolism, Inborn errors of -- Diagnosis, Biological markers -- Identification and classification, Epilepsy -- Diagnosis, Vitamin B6 -- Health aspects, Metabolomics -- Methods, Health care industry
Abstract

Background. Pyridoxine-dependent epilepsy (PDE-ALDH7A1) is an inborn error of lysine catabolism that presents with refractory epilepsy in newborns. Biallelic ALDH7A1 variants lead to deficiency of a-aminoadipic semialdehyde dehydrogenase/antiquitin, resulting in accumulation of piperideine-6-carboxylate (P6C), and secondary deficiency of the important cofactor pyridoxal-5-phosphate (PLP, active vitamin B6) through its complexation with P6C. Vitamin B6 supplementation resolves epilepsy in patients, but intellectual disability may still develop. Early diagnosis and treatment, preferably based on newborn screening, could optimize long-term clinical outcome. However, no suitable PDE-ALDH7A1 newborn screening biomarkers are currently available. Methods. We combined the innovative analytical methods untargeted metabolomics and infrared ion spectroscopy to discover and identify biomarkers in plasma that would allow for PDE-ALDH7A1 diagnosis in newborn screening. Results. We identified 2S,6S-/2S,6R-oxopropylpiperidine-2-carboxylic acid (2- OPP) as a PDE-ALDH7A1 biomarker, and confirmed 6-oxopiperidine-2-carboxylic acid (6-oxoPIP) as a biomarker. The suitability of 2-OPP as a potential PDE-ALDH7A1 newborn screening biomarker in dried bloodspots was shown. Additionally, we found that 2-OPP accumulates in brain tissue of patients and Aldh7a1-knockout mice, and induced epilepsy-like behavior in a zebrafish model system. Conclusion. This study has opened the way to newborn screening for PDE-ALDH7A1. We speculate that 2-OPP may contribute to ongoing neurotoxicity, also in treated PDE-ALDH7A1 patients. As 2-OPP formation appears to increase upon ketosis, we emphasize the importance of avoiding catabolism in PDE-ALDH7A1 patients. Funding. Society for Inborn Errors of Metabolism for Netherlands and Belgium (ESN), United for Metabolic Diseases (UMD), Stofwisselkracht, Radboud University, Canadian Institutes of Health Research, Dutch Research Council (NWO), and the European Research Council (ERC)., Introduction Pyridoxine-dependent epilepsy due to biallelic ALDH7A1 variants (OMIM 266100, PDE-ALDH7A1) is an inborn error of metabolism (IEM) that presents with refractory seizures in early infancy. These seizures are typically [...]

Published
2021
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40. Periodic reanalysis of whole-genome sequencing data enhances the diagnostic advantage over standard clinical genetic testing

Author

Costain, Gregory, Jobling, Rebekah, Walker, Susan, Reuter, Miriam S., Snell, Meaghan, Bowdin, Sarah, Cohn, Ronald D., Dupuis, Lucie, Hewson, Stacy, Mercimek-Andrews, Saadet, Shuman, Cheryl, Sondheimer, Neal, Weksberg, Rosanna, Yoon, Grace, Meyn, M. Stephen, Stavropoulos, Dimitri J., Scherer, Stephen W., Mendoza-Londono, Roberto, and Marshall, Christian R.

Published
2018
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43. O04: Developing a framework for sequence variant interpretation for multiple X-linked inborn errors of metabolism: The ClinGen IEM Working Group Experience

Author

Groopman, Emily, primary, Thomas-Wilson, Amanda, additional, Mohan, Shruthi, additional, Goldstein, Jennifer, additional, Weaver, Meredith, additional, Fernandez, Raquel, additional, Wallis, Heidi, additional, Caldovic, Ljuba, additional, Mew, Nicholas Ah, additional, De Biase, Irene, additional, Moser, Ann, additional, Suchy, Sharon, additional, Yuzyuk, Tatiana, additional, Young, Sarah, additional, Mercimek-Andrews, Saadet, additional, Braverman, Nancy, additional, and Mao, Rong, additional

Published
2023
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45. sj-docx-1-trd-10.1177_26330040221150269 – Supplemental material for Novel insights into the phenotype and long-term D-gal treatment in PGM1-CDG: a case series

Author

Radenkovic, Silvia, Johnsen, Christin, Schulze, Andreas, Lail, Gurnoor, Guilder, Laura, Schwartz, Kaitlin, Schultz, Matthew, Mercimek-Andrews, Saadet, Boyer, Suzanne, and Morava, Eva

Subjects
Medicine
Abstract

Supplemental material, sj-docx-1-trd-10.1177_26330040221150269 for Novel insights into the phenotype and long-term D-gal treatment in PGM1-CDG: a case series by Silvia Radenkovic, Christin Johnsen, Andreas Schulze, Gurnoor Lail, Laura Guilder, Kaitlin Schwartz, Matthew Schultz, Saadet Mercimek-Andrews, Suzanne Boyer and Eva Morava in Therapeutic Advances in Rare Disease

Published
2023
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47. Diagnostic yield of clinical exome sequencing in adulthood in medical genetics clinics

Author

Mainali, Apurba, primary, Athey, Taryn, additional, Bahl, Shalini, additional, Hung, Clara, additional, Caluseriu, Oana, additional, Chan, Alicia, additional, Eaton, Alison, additional, Ghai, Shailly Jain, additional, Kannu, Peter, additional, MacPherson, Melissa, additional, Niederhoffer, Karen Y., additional, Siriwardena, Komudi, additional, and Mercimek‐Andrews, Saadet, additional

Published
2022
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