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JOURNAL ARTICLE
Dmitrijs Rots, Eric Chater-Diehl, Alexander J M Dingemans, Sarah J Goodman, Michelle T Siu, Cheryl Cytrynbaum, Sanaa Choufani, Ny Hoang, Susan Walker, Zain Awamleh, Joshua Charkow, Stephen Meyn, Rolph Pfundt, Tuula Rinne, Thatjana Gardeitchik, Bert B A de Vries, A Chantal Deden, Erika Leenders, Michael Kwint, Constance T R M Stumpel, Servi J C Stevens, Jeroen R Vermeulen, Jeske V T van Harssel, Danielle G M Bosch, Koen L I van Gassen, Ellen van Binsbergen, Christa M de Geus, Hein Brackel, Maja Hempel, Davor Lessel, Jonas Denecke, Anne Slavotinek, Jonathan Strober, Amy Crunk, Leandra Folk, Ingrid M Wentzensen, Hui Yang, Fanggeng Zou, Francisca Millan, Richard Person, Yili Xie, Shuxi Liu, Lilian B Ousager, Martin Larsen, Laura Schultz-Rogers, Eva Morava, Eric W Klee, Ian R Berry, Jennifer Campbell, Kristin Lindstrom, Brianna Pruniski, Ann M Neumeyer, Jessica A Radley, Chanika Phornphutkul, Berkley Schmidt, William G Wilson, Katrin Õunap, Karit Reinson, Sander Pajusalu, Arie van Haeringen, Claudia Ruivenkamp, Roos Cuperus, Fernando Santos-Simarro, María Palomares-Bralo, Marta Pacio-Míguez, Alyssa Ritter, Elizabeth Bhoj, Elin Tønne, Kristian Tveten, Gerarda Cappuccio, Nicola Brunetti-Pierri, Leah Rowe, Jason Bunn, Margarita Saenz, Konrad Platzer, Mareike Mertens, Oana Caluseriu, Małgorzata J M Nowaczyk, Ronald D Cohn, Peter Kannu, Ebba Alkhunaizi, David Chitayat, Stephen W Scherer, Han G Brunner, Lisenka E L M Vissers, Tjitske Kleefstra, David A Koolen, Rosanna Weksberg
Truncating variants in exons 33 and 34 of the SNF2-related CREBBP activator protein (SRCAP) gene cause the neurodevelopmental disorder (NDD) Floating-Harbor syndrome (FLHS), characterized by short stature, speech delay, and facial dysmorphism. Here, we present a cohort of 33 individuals with clinical features distinct from FLHS and truncating (mostly de novo) SRCAP variants either proximal (n = 28) or distal (n = 5) to the FLHS locus. Detailed clinical characterization of the proximal SRCAP individuals identified shared characteristics: developmental delay with or without intellectual disability, behavioral and psychiatric problems, non-specific facial features, musculoskeletal issues, and hypotonia...
June 3, 2021: American Journal of Human Genetics
#22
JOURNAL ARTICLE
Fe Amalia García-Santiago, Cristina Martínez-Payo, Elena Mansilla, Fernando Santos-Simarro, Miguel Ruiz de Azua Ballesteros, María Ángeles Mori, Eugenia Antolín Alvarado, Yolanda Nieto, Isabel Vallcorba, Jair Tenorio, Julián Nevado, Pablo Lapunzina
OBJECTIVE: Prenatal diagnoses of microdeletion syndromes without ultrasound findings in the first and second trimester are always difficult. The objective of this study is to report the prenatal ultrasound findings in four foetuses diagnosed with 17q21.31 microdeletions (Koolen-de Vries syndrome) using chromosomal microarrays (CMA). PATIENTS AND METHODS: We present four foetuses with 17q21.31 microdeletion. All showed CNS anomalies in the third trimester, three had ventriculomegaly, and one hypogenesis of corpus callosum at 31 weeks of pregnancy...
May 2021: Molecular Genetics & Genomic Medicine
#23
JOURNAL ARTICLE
Alexander J M Dingemans, Diante E Stremmelaar, Roos van der Donk, Lisenka E L M Vissers, David A Koolen, Patrick Rump, Jayne Y Hehir-Kwa, Bert B A de Vries
The Koolen-de Vries syndrome (KdVS) is a multisystem syndrome with variable facial features caused by a 17q21.31 microdeletion or KANSL1 truncating variant. As the facial gestalt of KdVS has resemblance with the gestalt of the 22q11.2 deletion syndrome (22q11.2DS), we assessed whether our previously described hybrid quantitative facial phenotyping algorithm could distinguish between these two syndromes, and whether there is a facial difference between the molecular KdVS subtypes. We applied our algorithm to 2D photographs of 97 patients with KdVS (78 microdeletions, 19 truncating variants (likely) causing KdVS) and 48 patients with 22q11...
September 2021: European Journal of Human Genetics: EJHG
#24
JOURNAL ARTICLE
Daphna Prat, William R Katowitz, Alanna Strong, James A Katowitz
Background : Koolen-de Vries syndrome (KdVS) (OMIM #610443) or 17q21.31 microdeletion syndrome, is a rare genetic disorder characterized by developmental and speech delay, intellectual disability, epilepsy, hypotonia, characteristic facial features, and congenital malformations of multiple organs. The purpose of the current study was to describe ocular manifestations and surgical interventions in six KdVS pediatric patients, and to review the ocular associations of this condition. Materials and Methods : A retrospective review of consecutive KdVS subjects who were treated in the ophthalmology department at The Children's Hospital of Philadelphia over a 12-year period (2009-2020) was performed...
January 3, 2021: Ophthalmic Genetics
#25
JOURNAL ARTICLE
Simona Amenta, Silvia Frangella, Giuseppe Marangi, Serena Lattante, Stefania Ricciardi, Paolo Niccolò Doronzio, Daniela Orteschi, Chiara Veredice, Ilaria Contaldo, Giuseppe Zampino, Mattia Gentile, Emanuela Scarano, Claudio Graziano, Marcella Zollino
BACKGROUND: Koolen-de Vries syndrome (KdVS) is a multisystem neurodevelopmental disorder caused by 17q21.31 deletions or mutations in KANSL1 . It was mainly described in children. METHODS: A retrospective study on 9 subjects aged 19-45 years and revision of 18 literature patients, with the purpose to get insights into the phenotypic evolution with time, and into the clinical manifestations in adulthood. RESULTS: Seven patients had a 17q21...
December 24, 2020: Journal of Medical Genetics
#26
Giulia Pascolini, Federica Gaudioso, Maria Teresa Fadda, Luigi Laino, Alessandro Ferraris, Paola Grammatico
Koolen-de Vries syndrome (KdVS, MIM#610443) is a rare malformation condition mainly characterized by cognitive impairment in association with craniofacial and visceral anomalies. The core phenotype is caused by mutations in the chromatin remodeler KANSL1 (MSL1V1, KIAA1267, KAT8 Regulatory NSL Complex Subunit 1, MIM#612452), which maps to 17q21.31 critical genomic region (Koolen et al., Nature Genetics 2012;44:639-641). Considering its molecular basis, KdVS is included in the group of Developmental Disorders of Chromatin Remodeling (DDCRs), also termed chromatinopathies...
March 2021: American Journal of Medical Genetics. Part A
#27
JOURNAL ARTICLE
Stefania Bigoni, Giuseppe Marangi, Silvia Frangella, Arianna Panfili, Davide Ognibene, Gabriella Maria Squeo, Giuseppe Merla, Marcella Zollino
Massive parallel sequencing of 70 genes in a girl with a suspicion of chromatinopathy detected the (NM_015443.4:)c.985_986delTT variant in exon 2 of KANSL1 , which led to a diagnostic consideration of Koolen De Vries syndrome. The same variant was present in the healthy mother, consistent with either incomplete penetrance or variant mismapping. A network of second opinion was implemented among clinical geneticists first, and a diagnosis of Koolen De Vries syndrome was considered unlikely. By MLPA, a duplication spanning exons 1-3 of KANSL1 was detected in both the mother and the daughter...
October 9, 2020: Genes
#28
JOURNAL ARTICLE
David R Murdock, Hongzheng Dai, Lindsay C Burrage, Jill A Rosenfeld, Shamika Ketkar, Michaela F Müller, Vicente A Yépez, Julien Gagneur, Pengfei Liu, Shan Chen, Mahim Jain, Gladys Zapata, Carlos A Bacino, Hsiao-Tuan Chao, Paolo Moretti, William J Craigen, Neil A Hanchard, Brendan Lee
BACKGROUNDTranscriptome sequencing (RNA-seq) improves diagnostic rates in individuals with suspected Mendelian conditions to varying degrees, primarily by directing the prioritization of candidate DNA variants identified on exome or genome sequencing (ES/GS). Here we implemented an RNA-seq-guided method to diagnose individuals across a wide range of ages and clinical phenotypes.METHODSOne hundred fifteen undiagnosed adult and pediatric patients with diverse phenotypes and 67 family members (182 total individuals) underwent RNA-seq from whole blood and skin fibroblasts at the Baylor College of Medicine (BCM) Undiagnosed Diseases Network clinical site from 2014 to 2020...
January 4, 2021: Journal of Clinical Investigation
#29
JOURNAL ARTICLE
Aline Gaub, Bilal N Sheikh, M Felicia Basilicata, Marie Vincent, Mathilde Nizon, Cindy Colson, Matthew J Bird, James E Bradner, Julien Thevenon, Michael Boutros, Asifa Akhtar
Cells rely on a diverse repertoire of genes for maintaining homeostasis, but the transcriptional networks underlying their expression remain poorly understood. The MOF acetyltransferase-containing Non-Specific Lethal (NSL) complex is a broad transcription regulator. It is essential in Drosophila, and haploinsufficiency of the human KANSL1 subunit results in the Koolen-de Vries syndrome. Here, we perform a genome-wide RNAi screen and identify the BET protein BRD4 as an evolutionary conserved co-factor of the NSL complex...
May 7, 2020: Nature Communications
#30
JOURNAL ARTICLE
Taylor Woodfin, Christine Stoops, Joseph B Philips, Edward Lose, Fady M Mikhail, Anna Hurst
BACKGROUND: Koolen-de Vries (KdV) syndrome is caused by a 17q21.31 deletion leading to clinical symptoms of hypotonia and developmental delay and can present with abnormal hair texture. Menkes disease is an X-linked recessive inherited disease caused by pathogenic variants in ATP7A, which leads to profound copper deficiency. METHOD: We identified an infant male who presented with prematurity, hypotonia, and dysmorphic features for whom a family history of clinical Menkes disease was revealed after discussion with the clinical genetics team...
August 2019: Molecular Genetics & Genomic Medicine
#31
REVIEW
Allison M Han, Ayan Kusari, Fred Soeprono, Lawrence F Eichenfield
Koolen-de Vries syndrome (KdVS), also referred to as the 17q21.31 microdeletion syndrome, is a rare genetic disorder characterized by developmental delay, typical facial dysmorphism, and congenital defects. Associated anomalies include many cutaneous findings. Here, we report a 17-year-old boy with KdVS (17q21.31 microdeletion syndrome) who presented with diffuse freckling and multiple pigmented lesions, found to be most consistent with atypical café-au-lait macules (CALMs) on biopsy. We review the cutaneous findings commonly associated with KdVS (17q21...
July 2019: Pediatric Dermatology
#32
JOURNAL ARTICLE
Patrick R Blackburn, Cinthya J Zepeda-Mendoza, Teresa M Kruisselbrink, Lisa A Schimmenti, Sixto García-Miñaur, María Palomares, Julián Nevado, María A Mori, Guylène Le Meur, Eric W Klee, Cédric Le Caignec, Pablo Lapunzina, Bertrand Isidor, Dusica Babovic-Vuksanovic
Microphthalmia with brain and digital anomalies (MCOPS6, MIM# 607932) is an autosomal dominant disorder caused by loss-of-function variants or large deletions involving BMP4, which encodes bone morphogenetic protein 4, a member of the TGF-β protein superfamily. BMP4 has a number of roles in embryonic development including neurogenesis, lens induction, development of cartilage and bone, urogenital development, limb and digit patterning, hair follicle regeneration, as well as tooth formation. In addition to syndromic microphthalmia, BMP4 variants have been implicated in non-syndromic cleft lip with or without cleft palate and congenital healed cleft lip indicating different allelic presentations...
May 3, 2019: European Journal of Human Genetics: EJHG
#33
JOURNAL ARTICLE
Roos van der Donk, Sandra Jansen, Janneke H M Schuurs-Hoeijmakers, David A Koolen, Lia C M J Goltstein, Alexander Hoischen, Han G Brunner, Patrick Kemmeren, Christoffer Nellåker, Lisenka E L M Vissers, Bert B A de Vries, Jayne Y Hehir-Kwa
PURPOSE: The interpretation of genetic variants after genome-wide analysis is complex in heterogeneous disorders such as intellectual disability (ID). We investigate whether algorithms can be used to detect if a facial gestalt is present for three novel ID syndromes and if these techniques can help interpret variants of uncertain significance. METHODS: Facial features were extracted from photos of ID patients harboring a pathogenic variant in three novel ID genes (PACS1, PPM1D, and PHIP) using algorithms that model human facial dysmorphism, and facial recognition...
December 20, 2018: Genetics in Medicine: Official Journal of the American College of Medical Genetics
#34
LETTER
Ali S Kavakli
No abstract text is available yet for this article.
December 2018: European Journal of Anaesthesiology
#35
JOURNAL ARTICLE
Iker Sanchez-Navarro, Luciana R J da Silva, Fiona Blanco-Kelly, Olga Zurita, Noelia Sanchez-Bolivar, Cristina Villaverde, Maria Isabel Lopez-Molina, Blanca Garcia-Sandoval, Saoud Tahsin-Swafiri, Pablo Minguez, Rosa Riveiro-Alvarez, Isabel Lorda, Rocío Sanchez-Alcudia, Raquel Perez-Carro, Diana Valverde, Yichuan Liu, Lifeng Tian, Hakon Hakonarson, Almudena Avila-Fernandez, Marta Corton, Carmen Ayuso
Inherited syndromic retinopathies are a highly heterogeneous group of diseases that involve retinal anomalies and systemic manifestations. They include retinal ciliopathies, other well-defined clinical syndromes presenting with retinal alterations and cases of non-specific multisystemic diseases. The heterogeneity of these conditions makes molecular and clinical characterization of patients challenging in daily clinical practice. We explored the capacity of targeted resequencing and copy-number variation analysis to improve diagnosis of a heterogeneous cohort of 47 patients mainly comprising atypical cases that did not clearly fit a specific clinical diagnosis...
March 27, 2018: Scientific Reports
#36
JOURNAL ARTICLE
Kenneth A Myers, Amelia McGlade, Bernd A Neubauer, Dennis Lal, Samuel F Berkovic, Ingrid E Scheffer, Michael S Hildebrand
BACKGROUND: KANSL1 haploinsufficiency causes Koolen-de Vries syndrome (KdVS), characterized by dysmorphic features and intellectual disability; amiable personality, congenital malformations and seizures also commonly occur. The epilepsy phenotypic spectrum in KdVS is broad, but most individuals have focal seizures with some having a phenotype resembling the self-limited focal epilepsies of childhood (SFEC). We hypothesized that variants in KANSL1 contribute to pathogenesis of SFEC. MATERIALS AND METHODS: We screened KANSL1 for single nucleotide variants in 90 patients with SFEC...
2018: PloS One
#37
JOURNAL ARTICLE
Tracy Dudding-Byth, Anne Baxter, Elizabeth G Holliday, Anna Hackett, Sheridan O'Donnell, Susan M White, John Attia, Han Brunner, Bert de Vries, David Koolen, Tjitske Kleefstra, Seshika Ratwatte, Carlos Riveros, Steve Brain, Brian C Lovell
BACKGROUND: Massively parallel genetic sequencing allows rapid testing of known intellectual disability (ID) genes. However, the discovery of novel syndromic ID genes requires molecular confirmation in at least a second or a cluster of individuals with an overlapping phenotype or similar facial gestalt. Using computer face-matching technology we report an automated approach to matching the faces of non-identical individuals with the same genetic syndrome within a database of 3681 images [1600 images of one of 10 genetic syndrome subgroups together with 2081 control images]...
December 19, 2017: BMC Biotechnology
#38
JOURNAL ARTICLE
Angela T Morgan, Leenke van Haaften, Karen van Hulst, Carol Edley, Cristina Mei, Tiong Yang Tan, David Amor, Simon E Fisher, David A Koolen
Communication disorder is common in Koolen de Vries syndrome (KdVS), yet its specific symptomatology has not been examined, limiting prognostic counselling and application of targeted therapies. Here we examine the communication phenotype associated with KdVS. Twenty-nine participants (12 males, 4 with KANSL1 variants, 25 with 17q21.31 microdeletion), aged 1.0-27.0 years were assessed for oral-motor, speech, language, literacy, and social functioning. Early history included hypotonia and feeding difficulties...
January 2018: European Journal of Human Genetics: EJHG
#39
JOURNAL ARTICLE
Sandra Jansen, Alexander Hoischen, Bradley P Coe, Gemma L Carvill, Hilde Van Esch, Daniëlle G M Bosch, Ulla A Andersen, Carl Baker, Marijke Bauters, Raphael A Bernier, Bregje W van Bon, Hedi L Claahsen-van der Grinten, Jozef Gecz, Christian Gilissen, Lucia Grillo, Anna Hackett, Tjitske Kleefstra, David Koolen, Malin Kvarnung, Martin J Larsen, Carlo Marcelis, Fiona McKenzie, Marie-Lorraine Monin, Caroline Nava, Janneke H Schuurs-Hoeijmakers, Rolph Pfundt, Marloes Steehouwer, Servi J C Stevens, Connie T Stumpel, Fleur Vansenne, Mirella Vinci, Maartje van de Vorst, Petra de Vries, Kali Witherspoon, Joris A Veltman, Han G Brunner, Heather C Mefford, Corrado Romano, Lisenka E L M Vissers, Evan E Eichler, Bert B A de Vries
Genotype-first combined with reverse phenotyping has shown to be a powerful tool in human genetics, especially in the era of next generation sequencing. This combines the identification of individuals with mutations in the same gene and linking these to consistent (endo)phenotypes to establish disease causality. We have performed a MIP (molecular inversion probe)-based targeted re-sequencing study in 3,275 individuals with intellectual disability (ID) to facilitate a genotype-first approach for 24 genes previously implicated in ID...
January 2018: European Journal of Human Genetics: EJHG
#40
REVIEW
Marcella Zollino, Serena Lattante, Daniela Orteschi, Silvia Frangella, Paolo N Doronzio, Ilaria Contaldo, Eugenio Mercuri, Giuseppe Marangi
Craniosynostosis is a heterogeneous condition caused by the premature fusion of cranial sutures, occurring mostly as an isolated anomaly. Pathogenesis of non-syndromic forms of craniosynostosis is largely unknown. In about 15-30% of cases craniosynostosis occurs in association with other physical anomalies and it is referred to as syndromic craniosynostosis. Syndromic forms of craniosynostosis arise from mutations in genes belonging to the Fibroblast Growth Factor Receptor (FGFR) family and the interconnected molecular pathways in most cases...
2017: Frontiers in Neuroscience
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