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Maio N, Orbach R, Zaharieva I, Töpf A, Donkervoort S, Munot P, Mueller J, Willis T, Verma S, Peric S, Krishnakumar D, Sudhakar S, Foley AR, Silverstein S, Douglas G, Pais L, DiTroia S, Grunseich C, Hu Y, Sewry C, Sarkozy A, Straub V, Muntoni F, Rouault T, Bönnemann CG. Loss of Function of the Cytoplasmic Fe-S Assembly Protein CIAO1 Causes a Neuromuscular Disorder with Compromise of Nucleocytoplasmic Fe-S Enzymes. medRxiv 2023:2023.12.20.23300170. [PMID: 38196629 PMCID: PMC10775405 DOI: 10.1101/2023.12.20.23300170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Cytoplasmic and nuclear iron-sulfur enzymes that are essential for genome maintenance and replication depend on the cytoplasmic iron-sulfur assembly (CIA) machinery for cluster acquisition. Here we report that patients with biallelic loss of function in CIAO1 , a key CIA component, develop proximal and axial muscle weakness, fluctuating creatine kinase elevation and respiratory insufficiency. In addition, they present with CNS symptoms including learning difficulties and neurobehavioral comorbidities, along with iron deposition in deep brain nuclei, macrocytic anemia and gastrointestinal symptoms. Mutational analysis and functional assays revealed reduced stability of the variants compared to wild-type CIAO1. Loss of CIAO1 impaired DNA helicases, polymerases and repair enzymes which rely on the CIA complex to acquire their Fe-S cofactors, with lentiviral restoration reversing all patient-derived cellular abnormalities. Our study identifies CIAO1 as a novel human disease gene and provides insights into the broader implications of the iron-sulfur assembly pathway in human health and disease.
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Gehmlich K, Jiang A, Wadmore K, Hooper C, Douglas G, Ehler E, Broadway-Stringer S, Kalisch-Smith J, Sparrow D, Gautel M, Davies B, Watkins H. Crucial functions of alpha-actinin 2 in the embryonic heart. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Wellcome Trust; British Heart Foundation
Background/Introduction
Alpha-actinin is an integral protein of the Z-discs in heart and skeletal muscle cells, with important structural and signalling functions. Missense variants in alpha-actinin can cause inherited conditions, e.g. myopathies and cardiomyopathies. The underlying disease mechanisms are still unknown.
Purpose
In order to study the disease mechanisms of an alpha-actinin missense variant, which is known to cause Hypertrophic Cardiomyopathy in human patients, a mouse model was generated.
Methods
Mice carrying the alpha-actinin missense variant were generated by CRISPR-Cas9 genome editing. The heterozygous adult mice carrying the alpha-actinin variant were characterised by echocardiography and quantitative PCR. Hearts of homozygous embryos were analysed at E15.5 by high-resolution episcopic microscopy (HREM).
Results
Mice carrying a single copy of the missense variant were viable and had normal appearance. Adult heterozygous mice showed no signs of cardiomyopathy on echocardiography. However, mature male mice displayed molecular signs of cardiomyopathy, such as induction of the fetal gene programme at transcript level.
The attempt to generate adult mice homozygous for the variant failed: 9 breeding pairs produced 18 litters with 83 weaned pups, but no homozygous offspring. Embryonic lethality was confirmed and E15.5 was the latest stage homozygous pups were reliably found to be viable. At this timepoint, genotype distribution was within the expected Mendelian ratios.
HREM of the hearts at this stage revealed increased right ventricular chamber size and decreased left atrial size, when compared to wildtype littermates. Membranous ventricular septal defects were observed in 3 out of 8 homozygous hearts. Further these embryos displayed aortic stenosis and dysplasic leaflets of the pulmonary valve.
Conclusions
Heterozygous adult mice only displayed sub-clinical signs of disease. In contrast, the missense variant is embryonic lethal in the homozygous setting and leads to a range of morphological abnormalities in E15.5 hearts. Future work will identify how altered functions of alpha-actinin cause these changes.
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Affiliation(s)
- K Gehmlich
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - A Jiang
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - K Wadmore
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - C Hooper
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - G Douglas
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - E Ehler
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - S Broadway-Stringer
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - J Kalisch-Smith
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - D Sparrow
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - M Gautel
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - B Davies
- University of Oxford, Wellcome Centre for Human Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - H Watkins
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
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3
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Slavotinek A, Misceo D, Htun S, Mathisen L, Frengen E, Foreman M, Hurtig JE, Enyenihi L, Sterrett MC, Leung SW, Schneidman-Duhovny D, Estrada-Veras J, Duncan JL, Haaxma CA, Kamsteeg EJ, Xia V, Beleford D, Si Y, Douglas G, Treidene HE, van Hoof A, Fasken MB, Corbett AH. Biallelic variants in the RNA exosome gene EXOSC5 are associated with developmental delays, short stature, cerebellar hypoplasia and motor weakness. Hum Mol Genet 2021; 29:2218-2239. [PMID: 32504085 DOI: 10.1093/hmg/ddaa108] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/10/2020] [Accepted: 05/28/2020] [Indexed: 12/15/2022] Open
Abstract
The RNA exosome is an essential ribonuclease complex required for processing and/or degradation of both coding and non-coding RNAs. We identified five patients with biallelic variants in EXOSC5, which encodes a structural subunit of the RNA exosome. The clinical features of these patients include failure to thrive, short stature, feeding difficulties, developmental delays that affect motor skills, hypotonia and esotropia. Brain MRI revealed cerebellar hypoplasia and ventriculomegaly. While we ascertained five patients, three patients with distinct variants of EXOSC5 were studied in detail. The first patient had a deletion involving exons 5-6 of EXOSC5 and a missense variant, p.Thr114Ile, that were inherited in trans, the second patient was homozygous for p.Leu206His and the third patient had paternal isodisomy for chromosome 19 and was homozygous for p.Met148Thr. The additional two patients ascertained are siblings who had an early frameshift mutation in EXOSC5 and the p.Thr114Ile missense variant that were inherited in trans. We employed three complementary approaches to explore the requirement for EXOSC5 in brain development and assess consequences of pathogenic EXOSC5 variants. Loss of function for exosc5 in zebrafish results in shortened and curved tails/bodies, reduced eye/head size and edema. We modeled pathogenic EXOSC5 variants in both budding yeast and mammalian cells. Some of these variants cause defects in RNA exosome function as well as altered interactions with other RNA exosome subunits. These findings expand the number of genes encoding RNA exosome subunits linked to human disease while also suggesting that disease mechanism varies depending on the specific pathogenic variant.
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Affiliation(s)
- Anne Slavotinek
- Department of Pediatrics, University of California, San Francisco, CA 94143, USA
| | - Doriana Misceo
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo 0450, Norway
| | - Stephanie Htun
- Department of Pediatrics, University of California, San Francisco, CA 94143, USA
| | - Linda Mathisen
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo 0450, Norway
| | - Eirik Frengen
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo 0450, Norway
| | - Michelle Foreman
- Department of Microbiology and Molecular Genetics, University of Texas Health Science Center-Houston, Houston, TX 77030, USA
| | - Jennifer E Hurtig
- Department of Microbiology and Molecular Genetics, University of Texas Health Science Center-Houston, Houston, TX 77030, USA
| | - Liz Enyenihi
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | | | - Sara W Leung
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | - Dina Schneidman-Duhovny
- School of Computer Science and Engineering and the Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Juvianee Estrada-Veras
- Department of Pediatrics-Medical Genetics and Metabolism, Uniformed Services University/Walter Reed NMMC Bethesda, MD 20889, USA
| | - Jacque L Duncan
- Department of Ophthalmology, University of California, San Francisco, CA 94143, USA
| | - Charlotte A Haaxma
- Department of Pediatric Neurology, Amalia Children's Hospital and Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen 6500 HB, The Netherlands
| | - Erik-Jan Kamsteeg
- Department of Human Genetics, Radboud University Medical Center, Nijmegen 6500 HB, The Netherlands
| | - Vivian Xia
- Department of Pediatrics, University of California, San Francisco, CA 94143, USA
| | - Daniah Beleford
- Department of Pediatrics, University of California, San Francisco, CA 94143, USA
| | - Yue Si
- GeneDx Inc., MD 20877, USA
| | | | - Hans Einar Treidene
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo 0450, Norway
| | - Ambro van Hoof
- Department of Microbiology and Molecular Genetics, University of Texas Health Science Center-Houston, Houston, TX 77030, USA
| | - Milo B Fasken
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | - Anita H Corbett
- Department of Biology, Emory University, Atlanta, GA 30322, USA
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4
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Voisin N, Schnur RE, Douzgou S, Hiatt SM, Rustad CF, Brown NJ, Earl DL, Keren B, Levchenko O, Geuer S, Verheyen S, Johnson D, Zarate YA, Hančárová M, Amor DJ, Bebin EM, Blatterer J, Brusco A, Cappuccio G, Charrow J, Chatron N, Cooper GM, Courtin T, Dadali E, Delafontaine J, Del Giudice E, Doco M, Douglas G, Eisenkölbl A, Funari T, Giannuzzi G, Gruber-Sedlmayr U, Guex N, Heron D, Holla ØL, Hurst ACE, Juusola J, Kronn D, Lavrov A, Lee C, Lorrain S, Merckoll E, Mikhaleva A, Norman J, Pradervand S, Prchalová D, Rhodes L, Sanders VR, Sedláček Z, Seebacher HA, Sellars EA, Sirchia F, Takenouchi T, Tanaka AJ, Taska-Tench H, Tønne E, Tveten K, Vitiello G, Vlčková M, Uehara T, Nava C, Yalcin B, Kosaki K, Donnai D, Mundlos S, Brunetti-Pierri N, Chung WK, Reymond A. Variants in the degron of AFF3 are associated with intellectual disability, mesomelic dysplasia, horseshoe kidney, and epileptic encephalopathy. Am J Hum Genet 2021; 108:857-873. [PMID: 33961779 DOI: 10.1016/j.ajhg.2021.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 03/29/2021] [Indexed: 12/27/2022] Open
Abstract
The ALF transcription factor paralogs, AFF1, AFF2, AFF3, and AFF4, are components of the transcriptional super elongation complex that regulates expression of genes involved in neurogenesis and development. We describe an autosomal dominant disorder associated with de novo missense variants in the degron of AFF3, a nine amino acid sequence important for its binding to ubiquitin ligase, or with de novo deletions of this region. The sixteen affected individuals we identified, along with two previously reported individuals, present with a recognizable pattern of anomalies, which we named KINSSHIP syndrome (KI for horseshoe kidney, NS for Nievergelt/Savarirayan type of mesomelic dysplasia, S for seizures, H for hypertrichosis, I for intellectual disability, and P for pulmonary involvement), partially overlapping the AFF4-associated CHOPS syndrome. Whereas homozygous Aff3 knockout mice display skeletal anomalies, kidney defects, brain malformations, and neurological anomalies, knockin animals modeling one of the microdeletions and the most common of the missense variants identified in affected individuals presented with lower mesomelic limb deformities like KINSSHIP-affected individuals and early lethality, respectively. Overexpression of AFF3 in zebrafish resulted in body axis anomalies, providing some support for the pathological effect of increased amount of AFF3. The only partial phenotypic overlap of AFF3- and AFF4-associated syndromes and the previously published transcriptome analyses of ALF transcription factors suggest that these factors are not redundant and each contributes uniquely to proper development.
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Affiliation(s)
- Norine Voisin
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
| | - Rhonda E Schnur
- GeneDx, Gaithersburg, MD 20877, USA; Cooper Medical School of Rowan University, Division of Genetics, Camden, NJ 08103, USA
| | - Sofia Douzgou
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester M13 9WL, UK; Division of Evolution and Genomic Sciences, School of Biological Sciences, University of Manchester, Manchester M13 9NT, UK
| | - Susan M Hiatt
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Cecilie F Rustad
- Department of Medical Genetics, Oslo University Hospital, 0424 Oslo, Norway
| | - Natasha J Brown
- Victorian Clinical Genetics Services, Flemington Road, Parkville, VIC 3052, Australia; Murdoch Children's Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Flemington Road, Parkville, VIC 3052, Australia
| | | | - Boris Keren
- Department of Genetics, Pitié-Salpêtrière Hospital, Assistance Publique - Hôpitaux de Paris, Groupe de Recherche Clinique Déficience Intellectuelle et Autisme UPMC, Paris 75013, France
| | - Olga Levchenko
- Research Centre for Medical Genetics, Moscow 115522, Russia
| | - Sinje Geuer
- Max Planck Institute for Molecular Genetics, Berlin 14195, Germany; Institute for Medical and Human Genetics, Charité Universitätsmedizin Berlin, Berlin 10117, Germany
| | - Sarah Verheyen
- Institute of Human Genetics, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, 8010 Graz, Austria
| | - Diana Johnson
- Sheffield Clinical Genetics Service, Sheffield S10 2TQ, UK
| | - Yuri A Zarate
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR 72701, USA
| | - Miroslava Hančárová
- Charles University Second Faculty of Medicine and University Hospital Motol, 150 06 Prague, Czech Republic
| | - David J Amor
- Murdoch Children's Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Flemington Road, Parkville, VIC 3052, Australia
| | - E Martina Bebin
- Department of Neurology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jasmin Blatterer
- Institute of Human Genetics, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, 8010 Graz, Austria
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, Torino 10126, Italy; Medical Genetics Unit, Città della Salute e della Scienza University Hospital, Torino 10126, Italy
| | - Gerarda Cappuccio
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples 80131, Italy; Telethon Institute of Genetics and Medicine, Pozzuoli, Naples 80078, Italy
| | - Joel Charrow
- Division of Genetics, Birth Defects & Metabolism, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| | - Nicolas Chatron
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland; Genetics Department, Lyon University Hospital, Lyon 69007, France
| | - Gregory M Cooper
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Thomas Courtin
- Department of Genetics, Pitié-Salpêtrière Hospital, Assistance Publique - Hôpitaux de Paris, Groupe de Recherche Clinique Déficience Intellectuelle et Autisme UPMC, Paris 75013, France
| | - Elena Dadali
- Research Centre for Medical Genetics, Moscow 115522, Russia
| | | | - Ennio Del Giudice
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples 80131, Italy
| | - Martine Doco
- Secteur Génétique, CHU Reims, EA3801, SFR CAPSANTE, 51092 Reims, France
| | | | - Astrid Eisenkölbl
- Department of Pediatrics and Adolescent Medicine, Johannes Kepler University, Kepler University Hospital Linz, Krankenhausstraße 26-30, 4020 Linz, Austria
| | | | - Giuliana Giannuzzi
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
| | - Ursula Gruber-Sedlmayr
- Division of General Pediatrics, Department of Pediatrics and Adolescent Medicine, Medical University of Graz, 8036 Graz, Austria
| | - Nicolas Guex
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland; Bioinformatics Competence Center, University of Lausanne, Lausanne 1015, Switzerland
| | - Delphine Heron
- Department of Genetics, Pitié-Salpêtrière Hospital, Assistance Publique - Hôpitaux de Paris, Groupe de Recherche Clinique Déficience Intellectuelle et Autisme UPMC, Paris 75013, France
| | - Øystein L Holla
- Department of Medical Genetics, Telemark Hospital Trust, 3710 Skien, Norway
| | - Anna C E Hurst
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | | | - David Kronn
- New York Medical College, Valhalla, NY 10595, USA
| | | | - Crystle Lee
- Victorian Clinical Genetics Services, Flemington Road, Parkville, VIC 3052, Australia
| | - Séverine Lorrain
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland; Protein Analysis Facility, University of Lausanne, Lausanne 1015, Switzerland
| | - Else Merckoll
- Department of Radiology, Oslo University Hospital, 0424 Oslo, Norway
| | - Anna Mikhaleva
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
| | | | - Sylvain Pradervand
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland; Institute for Maternal and Child Health - IRCCS Burlo Garofolo, Trieste 34100, Italy
| | - Darina Prchalová
- Charles University Second Faculty of Medicine and University Hospital Motol, 150 06 Prague, Czech Republic
| | | | - Victoria R Sanders
- Division of Genetics, Birth Defects & Metabolism, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| | - Zdeněk Sedláček
- Charles University Second Faculty of Medicine and University Hospital Motol, 150 06 Prague, Czech Republic
| | - Heidelis A Seebacher
- Institute of Human Genetics, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, 8010 Graz, Austria
| | - Elizabeth A Sellars
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR 72701, USA
| | - Fabio Sirchia
- Institute for Maternal and Child Health - IRCCS Burlo Garofolo, Trieste 34100, Italy
| | - Toshiki Takenouchi
- Center for Medical Genetics, Department of Pediatrics, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Akemi J Tanaka
- Department of Pediatrics, Columbia University, New York, NY 10032, USA; Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Heidi Taska-Tench
- Division of Genetics, Birth Defects & Metabolism, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| | - Elin Tønne
- Department of Medical Genetics, Oslo University Hospital, 0424 Oslo, Norway
| | - Kristian Tveten
- Department of Medical Genetics, Telemark Hospital Trust, 3710 Skien, Norway
| | - Giuseppina Vitiello
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples 80131, Italy
| | - Markéta Vlčková
- Charles University Second Faculty of Medicine and University Hospital Motol, 150 06 Prague, Czech Republic
| | - Tomoko Uehara
- Center for Medical Genetics, Department of Pediatrics, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Caroline Nava
- Department of Genetics, Pitié-Salpêtrière Hospital, Assistance Publique - Hôpitaux de Paris, Groupe de Recherche Clinique Déficience Intellectuelle et Autisme UPMC, Paris 75013, France
| | - Binnaz Yalcin
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland; Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
| | - Kenjiro Kosaki
- Center for Medical Genetics, Department of Pediatrics, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Dian Donnai
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester M13 9WL, UK; Division of Evolution and Genomic Sciences, School of Biological Sciences, University of Manchester, Manchester M13 9NT, UK
| | - Stefan Mundlos
- Max Planck Institute for Molecular Genetics, Berlin 14195, Germany; Institute for Medical and Human Genetics, Charité Universitätsmedizin Berlin, Berlin 10117, Germany
| | - Nicola Brunetti-Pierri
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples 80131, Italy; Telethon Institute of Genetics and Medicine, Pozzuoli, Naples 80078, Italy
| | - Wendy K Chung
- Department of Pediatrics, Columbia University, New York, NY 10032, USA; Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Alexandre Reymond
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland.
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5
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Scuffins J, Keller-Ramey J, Dyer L, Douglas G, Torene R, Gainullin V, Juusola J, Meck J, Retterer K. Uniparental disomy in a population of 32,067 clinical exome trios. Genet Med 2021; 23:1101-1107. [PMID: 33495530 PMCID: PMC8187148 DOI: 10.1038/s41436-020-01092-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 12/24/2020] [Accepted: 12/28/2020] [Indexed: 11/09/2022] Open
Abstract
Purpose Data on the clinical prevalence and spectrum of uniparental disomy (UPD) remain limited. Trio exome sequencing (ES) presents a comprehensive method for detection of UPD alongside sequence and copy-number variant analysis. Methods We analyzed 32,067 ES trios referred for diagnostic testing to create a profile of UPD events and their disease associations. ES single-nucleotide polymorphism (SNP) and copy-number data were used to identify both whole-chromosome and segmental UPD and to categorize whole-chromosome results as isodisomy, heterodisomy, or mixed. Results Ninety-nine whole-chromosome and 13 segmental UPD events were identified. Of these, 29 were associated with an imprinting disorder, and 16 were associated with a positive test result through homozygous sequence variants. Isodisomy was more commonly observed in large chromosomes along with a higher rate of homozygous pathogenic variants, while heterodisomy was more frequent in chromosomes associated with imprinting or trisomy mosaicism (14, 15, 16, 20, 22). Conclusion Whole-chromosome UPD was observed in 0.31% of cases, resulting in a diagnostic finding in 0.14%. Only three UPD-positive cases had a diagnostic finding unrelated to the UPD. Thirteen UPD events were identified in cases with prior normal SNP chromosomal microarray results, demonstrating the additional diagnostic value of UPD detection by trio ES.
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6
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Martin PB, Kigoshi-Tansho Y, Sher RB, Ravenscroft G, Stauffer JE, Kumar R, Yonashiro R, Müller T, Griffith C, Allen W, Pehlivan D, Harel T, Zenker M, Howting D, Schanze D, Faqeih EA, Almontashiri NAM, Maroofian R, Houlden H, Mazaheri N, Galehdari H, Douglas G, Posey JE, Ryan M, Lupski JR, Laing NG, Joazeiro CAP, Cox GA. Author Correction: NEMF mutations that impair ribosome-associated quality control are associated with neuromuscular disease. Nat Commun 2020; 11:5022. [PMID: 33004807 PMCID: PMC7529740 DOI: 10.1038/s41467-020-18941-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Paige B Martin
- The Jackson Laboratory, Bar Harbor, ME, USA.,The University of Maine, Graduate School of Biomedical Science and Engineering, Orono, ME, USA
| | - Yu Kigoshi-Tansho
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Roger B Sher
- Department of Neurobiology & Behavior, Stony Brook University, Stony Brook, NY, USA.,Center for Nervous System Disorders, Stony Brook University, Stony Brook, NY, USA
| | - Gianina Ravenscroft
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | | | - Rajesh Kumar
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Ryo Yonashiro
- Department of Molecular Medicine, Scripps Research, Jupiter, FL, USA
| | - Tina Müller
- Department of Molecular Medicine, Scripps Research, Jupiter, FL, USA
| | | | - William Allen
- Mission Fullerton Genetics Center, Mission Health, Asheville, NC, USA
| | - Davut Pehlivan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Tamar Harel
- Department of Genetic and Metabolic Diseases, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Martin Zenker
- Institute of Human Genetics, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Denise Howting
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | - Denny Schanze
- Institute of Human Genetics, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Eissa A Faqeih
- Department of Genetics, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Naif A M Almontashiri
- The Center for Genetics and Inherited Diseases, Taibah University, Almadinah Almunwarah, Saudi Arabia.,Faculty of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Reza Maroofian
- Neurogenetics Laboratory, UCL Queen Square Institute of Neurology, London, UK.,The National Hospital for Neurology and Neurosurgery, London, UK
| | - Henry Houlden
- Neurogenetics Laboratory, UCL Queen Square Institute of Neurology, London, UK.,The National Hospital for Neurology and Neurosurgery, London, UK
| | - Neda Mazaheri
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Hamid Galehdari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | | | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Monique Ryan
- Department of Neurology, The Royal Children's Hospital, Melbourne, VIC, Australia.,Murdoch Children's Research Institute and University of Melbourne, Melbourne, VIC, Australia
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,Texas Children's Hospital, Houston, TX, USA
| | - Nigel G Laing
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | - Claudio A P Joazeiro
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany. .,Department of Molecular Medicine, Scripps Research, La Jolla, CA, USA.
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7
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Martin PB, Kigoshi-Tansho Y, Sher RB, Ravenscroft G, Stauffer JE, Kumar R, Yonashiro R, Müller T, Griffith C, Allen W, Pehlivan D, Harel T, Zenker M, Howting D, Schanze D, Faqeih EA, Almontashiri NAM, Maroofian R, Houlden H, Mazaheri N, Galehdari H, Douglas G, Posey JE, Ryan M, Lupski JR, Laing NG, Joazeiro CAP, Cox GA. NEMF mutations that impair ribosome-associated quality control are associated with neuromuscular disease. Nat Commun 2020; 11:4625. [PMID: 32934225 PMCID: PMC7494853 DOI: 10.1038/s41467-020-18327-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 08/11/2020] [Indexed: 12/14/2022] Open
Abstract
A hallmark of neurodegeneration is defective protein quality control. The E3 ligase Listerin (LTN1/Ltn1) acts in a specialized protein quality control pathway—Ribosome-associated Quality Control (RQC)—by mediating proteolytic targeting of incomplete polypeptides produced by ribosome stalling, and Ltn1 mutation leads to neurodegeneration in mice. Whether neurodegeneration results from defective RQC and whether defective RQC contributes to human disease have remained unknown. Here we show that three independently-generated mouse models with mutations in a different component of the RQC complex, NEMF/Rqc2, develop progressive motor neuron degeneration. Equivalent mutations in yeast Rqc2 selectively interfere with its ability to modify aberrant translation products with C-terminal tails which assist with RQC-mediated protein degradation, suggesting a pathomechanism. Finally, we identify NEMF mutations expected to interfere with function in patients from seven families presenting juvenile neuromuscular disease. These uncover NEMF’s role in translational homeostasis in the nervous system and implicate RQC dysfunction in causing neurodegeneration. Defective protein quality control is a key feature of neurodegeneration. Here, the authors show that mutations in Nemf/NEMF, a component of the Ribosome-associated Quality Control complex, have a neurodegenerative effect in mice and may underlie neuromuscular disease in seven unrelated families.
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Affiliation(s)
- Paige B Martin
- The Jackson Laboratory, Bar Harbor, ME, USA.,The University of Maine, Graduate School of Biomedical Science and Engineering, Orono, ME, USA
| | - Yu Kigoshi-Tansho
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Roger B Sher
- Department of Neurobiology & Behavior, Stony Brook University, Stony Brook, NY, USA.,Center for Nervous System Disorders, Stony Brook University, Stony Brook, NY, USA
| | - Gianina Ravenscroft
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | | | - Rajesh Kumar
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Ryo Yonashiro
- Department of Molecular Medicine, Scripps Research, Jupiter, FL, USA
| | - Tina Müller
- Department of Molecular Medicine, Scripps Research, Jupiter, FL, USA
| | | | - William Allen
- Mission Fullerton Genetics Center, Mission Health, Asheville, NC, USA
| | - Davut Pehlivan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Tamar Harel
- Department of Genetic and Metabolic Diseases, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Martin Zenker
- Institute of Human Genetics, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Denise Howting
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | - Denny Schanze
- Institute of Human Genetics, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Eissa A Faqeih
- Department of Genetics, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Naif A M Almontashiri
- The Center for Genetics and Inherited Diseases, Taibah University, Almadinah Almunwarah, Saudi Arabia.,Faculty of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Reza Maroofian
- Neurogenetics Laboratory, UCL Queen Square Institute of Neurology, London, UK.,The National Hospital for Neurology and Neurosurgery, London, UK
| | - Henry Houlden
- Neurogenetics Laboratory, UCL Queen Square Institute of Neurology, London, UK.,The National Hospital for Neurology and Neurosurgery, London, UK
| | - Neda Mazaheri
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Hamid Galehdari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | | | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Monique Ryan
- Department of Neurology, The Royal Children's Hospital, Melbourne, VIC, Australia.,Murdoch Children's Research Institute and University of Melbourne, Melbourne, VIC, Australia
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,Texas Children's Hospital, Houston, TX, USA
| | - Nigel G Laing
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
| | - Claudio A P Joazeiro
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany. .,Department of Molecular Medicine, Scripps Research, La Jolla, CA, USA.
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8
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Robinson HK, Zaklyazminskaya E, Povolotskaya I, Surikova Y, Mallin L, Armstrong C, Mabin D, Benke PJ, Chrisant MR, McDonald M, Marboe CC, Agre KE, Deyle DR, McWalter K, Douglas G, Balashova MS, Kaimonov V, Shirokova N, Pomerantseva E, Turner CL, Ellard S. Biallelic variants in PPP1R13L cause paediatric dilated cardiomyopathy. Clin Genet 2020; 98:331-340. [PMID: 32666529 DOI: 10.1111/cge.13812] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/12/2020] [Accepted: 06/29/2020] [Indexed: 12/21/2022]
Abstract
Childhood dilated cardiomyopathy (DCM) is a leading cause of heart failure requiring cardiac transplantation and approximately 5% of cases result in sudden death. Knowledge of the underlying genetic cause can aid prognostication and clinical management and enables accurate recurrence risk counselling for the family. Here we used genomic sequencing to identify the causative genetic variant(s) in families with children affected by severe DCM. In an international collaborative effort facilitated by GeneMatcher, biallelic variants in PPP1R13L were identified in seven children with severe DCM from five unrelated families following exome or genome sequencing and inheritance-based variant filtering. PPP1R13L encodes inhibitor of apoptosis-stimulating protein of p53 protein (iASPP). In addition to roles in apoptosis, iASPP acts as a regulator of desmosomes and has been implicated in inflammatory pathways. DCM presented early (mean: 2 years 10 months; range: 3 months-9 years) and was progressive, resulting in death (n = 3) or transplant (n = 3), with one child currently awaiting transplant. Genomic sequencing technologies are valuable for the identification of novel and emerging candidate genes. Biallelic variants in PPP1R13L were previously reported in a single consanguineous family with paediatric DCM. The identification here of a further five families now provides sufficient evidence to support a robust gene-disease association between PPP1R13L and severe paediatric DCM. The PPP1R13L gene should be included in panel-based genetic testing for paediatric DCM.
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Affiliation(s)
- H K Robinson
- Exeter Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - E Zaklyazminskaya
- Medical Genetics Laboratory, Petrovsky National Research Centre of Surgery, Moscow, Russia.,NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia
| | - I Povolotskaya
- NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia
| | - Y Surikova
- Medical Genetics Laboratory, Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - L Mallin
- Exeter Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - C Armstrong
- Paediatric Cardiac Service, Bristol Royal Hospital for Children, Bristol, UK
| | - D Mabin
- Paediatrics Service, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - P J Benke
- Clinical Genetics Dpt, Joe DiMaggio Children's Hospital, Hollywood, Florida, USA.,Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, Florida, USA
| | - M R Chrisant
- Clinical Genetics Dpt, Joe DiMaggio Children's Hospital, Hollywood, Florida, USA
| | - M McDonald
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina, USA
| | - C C Marboe
- Department of Pathology and Cell Biology, Columbia University Medical Centre, New York, New York, USA
| | - K E Agre
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - D R Deyle
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - K McWalter
- Clinical Genomics, GeneDx Inc, Gaithersburg, Maryland, USA
| | - G Douglas
- Clinical Genomics, GeneDx Inc, Gaithersburg, Maryland, USA
| | - M S Balashova
- NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia.,Chair of Genetics, I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - V Kaimonov
- NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia
| | - N Shirokova
- NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia
| | - E Pomerantseva
- NGS Laboratory
- Genotyping Laboratory
- Genetic Counseling Department, Centre of Genetics and Reproductive Medicine "Genetico", Moscow, Russia
| | - C L Turner
- Peninsula Clinical Genetics Service, Department of Clinical Genetics, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - S Ellard
- Exeter Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK.,Institute of Biomedical and Clinical Science, College of Medicine and Health, Exeter, UK
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9
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Mattioli F, Hayot G, Drouot N, Isidor B, Courraud J, Hinckelmann MV, Mau-Them FT, Sellier C, Goldman A, Telegrafi A, Boughton A, Gamble C, Moutton S, Quartier A, Jean N, Van Ness P, Grotto S, Nambot S, Douglas G, Si YC, Chelly J, Shad Z, Kaplan E, Dineen R, Golzio C, Charlet-Berguerand N, Mandel JL, Piton A. De Novo Frameshift Variants in the Neuronal Splicing Factor NOVA2 Result in a Common C-Terminal Extension and Cause a Severe Form of Neurodevelopmental Disorder. Am J Hum Genet 2020; 106:438-452. [PMID: 32197073 DOI: 10.1016/j.ajhg.2020.02.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
The neuro-oncological ventral antigen 2 (NOVA2) protein is a major factor regulating neuron-specific alternative splicing (AS), previously associated with an acquired neurologic condition, the paraneoplastic opsoclonus-myoclonus ataxia (POMA). We report here six individuals with de novo frameshift variants in NOVA2 affected with a severe neurodevelopmental disorder characterized by intellectual disability (ID), motor and speech delay, autistic features, hypotonia, feeding difficulties, spasticity or ataxic gait, and abnormal brain MRI. The six variants lead to the same reading frame, adding a common proline rich C-terminal part instead of the last KH RNA binding domain. We detected 41 genes differentially spliced after NOVA2 downregulation in human neural cells. The NOVA2 variant protein shows decreased ability to bind target RNA sequences and to regulate target AS events. It also fails to complement the effect on neurite outgrowth induced by NOVA2 downregulation in vitro and to rescue alterations of retinotectal axonal pathfinding induced by loss of NOVA2 ortholog in zebrafish. Our results suggest a partial loss-of-function mechanism rather than a full heterozygous loss-of-function, although a specific contribution of the novel C-terminal extension cannot be excluded.
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Affiliation(s)
- Francesca Mattioli
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Gaelle Hayot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Nathalie Drouot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU de Nantes, Nantes 44093, France
| | - Jérémie Courraud
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Maria-Victoria Hinckelmann
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Frederic Tran Mau-Them
- Laboratoire de Génétique Moléculaire, UF Innovation en diagnostic génomique des maladies rares, Plateau Technique de Biologie, Centre Hospitalier Universitaire de Dijon, Dijon 21070, France; INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon 21070, France
| | - Chantal Sellier
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Alica Goldman
- Department of Neurology, Neurophysiology Section, Baylor College of Medicine, Houston, TX 77030, USA
| | | | | | | | - Sebastien Moutton
- INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon 21070, France; Centre de Génétique et Centre de référence "Anomalies du Développement et Syndromes Malformatifs," Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon 21070, France
| | - Angélique Quartier
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Nolwenn Jean
- INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon 21070, France; Centre de Génétique et Centre de référence "Anomalies du Développement et Syndromes Malformatifs," Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon 21070, France
| | - Paul Van Ness
- Department of Neurology, Neurophysiology Section, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sarah Grotto
- Service de Génétique Médicale, AP-HP Robert-Debré, Paris 75019, France
| | - Sophie Nambot
- INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon 21070, France; Centre de Génétique et Centre de référence "Anomalies du Développement et Syndromes Malformatifs," Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon 21070, France
| | | | | | - Jamel Chelly
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France; Laboratory of Genetic Diagnostic, Hôpitaux Universitaires de Strasbourg, Strasbourg 67000, France
| | - Zohra Shad
- Department of Genetics, University of Illinois College of Medicine, Chicago, IL 60607, USA
| | - Elisabeth Kaplan
- Department of Genetics, University of Illinois College of Medicine, Chicago, IL 60607, USA
| | - Richard Dineen
- Department of Genetics, University of Illinois College of Medicine, Chicago, IL 60607, USA
| | - Christelle Golzio
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Nicolas Charlet-Berguerand
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France
| | - Jean-Louis Mandel
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France; University of Strasbourg Institute of Advanced Studies, Strasbourg 67000, France
| | - Amélie Piton
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67400, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch 67400, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67400, France; Université de Strasbourg, Illkirch 67400, France; Laboratory of Genetic Diagnostic, Hôpitaux Universitaires de Strasbourg, Strasbourg 67000, France.
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10
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Cheng H, Capponi S, Wakeling E, Marchi E, Li Q, Zhao M, Weng C, Piatek SG, Ahlfors H, Kleyner R, Rope A, Lumaka A, Lukusa P, Devriendt K, Vermeesch J, Posey JE, Palmer EE, Murray L, Leon E, Diaz J, Worgan L, Mallawaarachchi A, Vogt J, de Munnik SA, Dreyer L, Baynam G, Ewans L, Stark Z, Lunke S, Gonçalves AR, Soares G, Oliveira J, Fassi E, Willing M, Waugh JL, Faivre L, Riviere JB, Moutton S, Mohammed S, Payne K, Walsh L, Begtrup A, Sacoto MJG, Douglas G, Alexander N, Buckley MF, Mark PR, Adès LC, Sandaradura SA, Lupski JR, Roscioli T, Agrawal PB, Kline AD, Wang K, Timmers HTM, Lyon GJ. Missense variants in TAF1 and developmental phenotypes: challenges of determining pathogenicity. Hum Mutat 2019; 41:10.1002/humu.23936. [PMID: 31646703 PMCID: PMC7187541 DOI: 10.1002/humu.23936] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/16/2019] [Indexed: 12/26/2022]
Abstract
We recently described a new neurodevelopmental syndrome (TAF1/MRXS33 intellectual disability syndrome) (MIM# 300966) caused by pathogenic variants involving the X-linked gene TAF1, which participates in RNA polymerase II transcription. The initial study reported eleven families, and the syndrome was defined as presenting early in life with hypotonia, facial dysmorphia, and developmental delay that evolved into intellectual disability (ID) and/or autism spectrum disorder (ASD). We have now identified an additional 27 families through a genotype-first approach. Familial segregation analysis, clinical phenotyping, and bioinformatics were capitalized on to assess potential variant pathogenicity, and molecular modelling was performed for those variants falling within structurally characterized domains of TAF1. A novel phenotypic clustering approach was also applied, in which the phenotypes of affected individuals were classified using 51 standardized Human Phenotype Ontology (HPO) terms. Phenotypes associated with TAF1 variants show considerable pleiotropy and clinical variability, but prominent among previously unreported effects were brain morphological abnormalities, seizures, hearing loss, and heart malformations. Our allelic series broadens the phenotypic spectrum of TAF1/MRXS33 intellectual disability syndrome and the range of TAF1 molecular defects in humans. It also illustrates the challenges for determining the pathogenicity of inherited missense variants, particularly for genes mapping to chromosome X. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hanyin Cheng
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Simona Capponi
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Urology, Medical Faculty-University of Freiburg, Freiburg, Germany
| | - Emma Wakeling
- North West Thames Regional Genetics Service, London North West University Healthcare NHS Trust, Harrow, UK
| | - Elaine Marchi
- Institute for Basic Research in Developmental Disabilities (IBR), Staten Island, New York
| | - Quan Li
- Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Mengge Zhao
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Chunhua Weng
- Department of Biomedical Informatics, Columbia University Medical Center, New York, New York
| | - Stefan G. Piatek
- North East Thames Regional Genetics Laboratory, Great Ormond Street Hospital, London, UK
| | - Helena Ahlfors
- North East Thames Regional Genetics Laboratory, Great Ormond Street Hospital, London, UK
| | - Robert Kleyner
- Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Alan Rope
- Kaiser Permanente Center for Health Research, Portland, Oregon
- Genome Medical, South San Francisco, California
| | - Aimé Lumaka
- Department of Biomedical and Preclinical Sciences, GIGA-R, Laboratory of Human Genetics, University of Liège, Liège, Belgium
- Institut National de Recherche Biomédicale, Kinshasa, DR Congo
- Centre for Human Genetics, Faculty of Medicine, University of Kinshasa, Kinshasa, DR Congo
| | - Prosper Lukusa
- Institut National de Recherche Biomédicale, Kinshasa, DR Congo
- Centre for Human Genetics, Faculty of Medicine, University of Kinshasa, Kinshasa, DR Congo
- Centre for Human Genetics, University Hospital, University of Leuven, Leuven, Belgium
| | - Koenraad Devriendt
- Centre for Human Genetics, University Hospital, University of Leuven, Leuven, Belgium
| | - Joris Vermeesch
- Centre for Human Genetics, University Hospital, University of Leuven, Leuven, Belgium
| | - Jennifer E. Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Elizabeth E. Palmer
- Genetics of Learning Disability Service, Newcastle, New South Wales, Australia
- School of Women’s and Children’s Health, University of New South Wales, Randwick, New South Wales, Australia
| | - Lucinda Murray
- Genetics of Learning Disability Service, Newcastle, New South Wales, Australia
| | - Eyby Leon
- Rare Disease Institute, Children’s National Health System, Washington, District of Columbia
| | - Jullianne Diaz
- Rare Disease Institute, Children’s National Health System, Washington, District of Columbia
| | - Lisa Worgan
- Department of Clinical Genetics, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Amali Mallawaarachchi
- Department of Clinical Genetics, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Julie Vogt
- West Midlands Regional Clinical Genetics Service and Birmingham Health Partners, Birmingham Women’s and Children’s Hospitals NHS Foundation Trust, Birmingham, UK
| | - Sonja A. de Munnik
- Department of Human Genetics, Institute for Genetic and Metabolic Disease, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Lauren Dreyer
- Genetic Services of Western Australia, Undiagnosed Diseases Program, Perth, Western Australia, Australia
| | - Gareth Baynam
- Genetic Services of Western Australia, Undiagnosed Diseases Program, Perth, Western Australia, Australia
- Western Australian Register of Developmental Anomalies, Perth, Western Australia, Australia
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Western Australia, Australia
- Telethon Kids Institute, Perth, Western Australia, Australia
- Division of Paediatrics, School of Medicine, University of Western Australia, Perth, Western Australia, Australia
| | - Lisa Ewans
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia
| | - Zornitza Stark
- Victorian Clinical Genetics Services, Murdoch Children’s Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
- Australian Genomics Health Alliance, Melbourne, Victoria, Australia
| | - Sebastian Lunke
- Victorian Clinical Genetics Services, Murdoch Children’s Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
- Australian Genomics Health Alliance, Melbourne, Victoria, Australia
| | - Ana R. Gonçalves
- Center for Medical Genetics Dr. Jacinto de Magalhāes, Hospital and University Center of Porto, Porto, Portugal
| | - Gabriela Soares
- Center for Medical Genetics Dr. Jacinto de Magalhāes, Hospital and University Center of Porto, Porto, Portugal
| | - Jorge Oliveira
- Center for Medical Genetics Dr. Jacinto de Magalhāes, Hospital and University Center of Porto, Porto, Portugal
- unIGENe, and Center for Predictive and Preventive Genetics (CGPP), Institute for Molecular and Cell Biology (IBMC), Institute of Health Research and Innovation (i3S), University of Porto, Porto, Portugal
| | - Emily Fassi
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, Michigan
| | - Marcia Willing
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, Michigan
| | - Jeff L. Waugh
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
- Department of Pediatrics, Division of Pediatric Neurology, University of Texas Southwestern, Dallas, Texas
| | - Laurence Faivre
- INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon, France
| | | | - Sebastien Moutton
- INSERM U1231, LNC UMR1231 GAD, Burgundy University, Dijon, France
- Department of Medical Genetics, Reference Center for Developmental Anomalies, Bordeaux University Hospital, Bordeaux, France
| | | | - Katelyn Payne
- Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Laurence Walsh
- Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana
| | | | | | | | | | - Michael F. Buckley
- New South Wales Health Pathology Genomic Laboratory, Prince of Wales Hospital, Randwick, New South Wales, Australia
| | - Paul R. Mark
- Spectrum Health Division of Medical and Molecular Genetics, Grand Rapids, Michigan
| | - Lesley C. Adès
- Department of Paediatrics and Child Health, University of Sydney, Sydney, New South Wales, Australia
- Department of Genetics, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - Sarah A. Sandaradura
- Department of Paediatrics and Child Health, University of Sydney, Sydney, New South Wales, Australia
- Department of Genetics, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - James R. Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Department of Pediatrics, Texas Children’s Hospital, Houston, Texas
| | - Tony Roscioli
- New South Wales Health Pathology Genomic Laboratory, Prince of Wales Hospital, Randwick, New South Wales, Australia
- Centre for Clinical Genetics, Sydney Children’s Hospital, Randwick, New South Wales, Australia
- Neuroscience Research Australia, University of New South Wales, Sydney, New South Wales, Australia
| | - Pankaj B. Agrawal
- Divisions of Newborn Medicine and Genetics and Genomics, Manton Center for Orphan Disease Research, Boston Children’s Hospital, Harvard Medical School, Boston, Maryland
| | - Antonie D. Kline
- Harvey Institute for Human Genetics, Greater Baltimore Medical Center, Baltimore, Maryland
| | | | - Kai Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania
| | - H. T. Marc Timmers
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Urology, Medical Faculty-University of Freiburg, Freiburg, Germany
| | - Gholson J. Lyon
- Institute for Basic Research in Developmental Disabilities (IBR), Staten Island, New York
- Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
- The Graduate Center, The City University of New York, New York, New York
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11
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Ziegler A, Bader P, McWalter K, Douglas G, Houdayer C, Bris C, Rouleau S, Coutant R, Colin E, Bonneau D. Confirmation that variants in TTI2 are responsible for autosomal recessive intellectual disability. Clin Genet 2019; 96:354-358. [PMID: 31290144 DOI: 10.1111/cge.13603] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/21/2019] [Accepted: 06/30/2019] [Indexed: 12/30/2022]
Abstract
TTI2 (MIM 614126) has been described as responsible for autosomal recessive intellectual disability (ID; MRT39, MIM:615541) in only two inbred families. Here, we give an account of two individuals from two unrelated outbred families harbouring compound heterozygous TTI2 pathogenic variants. Together with severe ID, progressive microcephaly, scoliosis and sleeping disorder are the most striking features in the two individuals concerned. TTI2, together with TTI1 and TELO2, encode proteins that constitute the triple T heterotrimeric complex. This TTT complex interacts with the HSP90 and R2TP to form a super-complex that has a chaperone function stabilising and maturing a number of kinases, such as ataxia-telangiectasia mutated and mechanistic target of rapamycin, which are key regulators of cell proliferation and genome maintenance. Pathogenic variants in TTI2 logically result in a phenotype close to that caused by TELO2 variants.
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Affiliation(s)
- Alban Ziegler
- Département de Biochimie et Génétique du CHU d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France.,Mitolab, UMR INSERM 1083-CNRS 6015, Université d'Angers, Angers, France
| | | | | | - Ganka Douglas
- Exome Sequencing Program, GeneDx, Gaithersburg, Maryland
| | - Clara Houdayer
- Département de Biochimie et Génétique du CHU d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Céline Bris
- Département de Biochimie et Génétique du CHU d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Stephanie Rouleau
- Service d'Endocrinologie Pédiatrique, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Régis Coutant
- Service d'Endocrinologie Pédiatrique, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Estelle Colin
- Département de Biochimie et Génétique du CHU d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France.,Mitolab, UMR INSERM 1083-CNRS 6015, Université d'Angers, Angers, France
| | - Dominique Bonneau
- Département de Biochimie et Génétique du CHU d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France.,Mitolab, UMR INSERM 1083-CNRS 6015, Université d'Angers, Angers, France
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12
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Snijders Blok L, Rousseau J, Twist J, Ehresmann S, Takaku M, Venselaar H, Rodan LH, Nowak CB, Douglas J, Swoboda KJ, Steeves MA, Sahai I, Stumpel CTRM, Stegmann APA, Wheeler P, Willing M, Fiala E, Kochhar A, Gibson WT, Cohen ASA, Agbahovbe R, Innes AM, Au PYB, Rankin J, Anderson IJ, Skinner SA, Louie RJ, Warren HE, Afenjar A, Keren B, Nava C, Buratti J, Isapof A, Rodriguez D, Lewandowski R, Propst J, van Essen T, Choi M, Lee S, Chae JH, Price S, Schnur RE, Douglas G, Wentzensen IM, Zweier C, Reis A, Bialer MG, Moore C, Koopmans M, Brilstra EH, Monroe GR, van Gassen KLI, van Binsbergen E, Newbury-Ecob R, Bownass L, Bader I, Mayr JA, Wortmann SB, Jakielski KJ, Strand EA, Kloth K, Bierhals T, Roberts JD, Petrovich RM, Machida S, Kurumizaka H, Lelieveld S, Pfundt R, Jansen S, Deriziotis P, Faivre L, Thevenon J, Assoum M, Shriberg L, Kleefstra T, Brunner HG, Wade PA, Fisher SE, Campeau PM. Author Correction: CHD3 helicase domain mutations cause a neurodevelopmental syndrome with macrocephaly and impaired speech and language. Nat Commun 2019; 10:2079. [PMID: 31048695 PMCID: PMC6497626 DOI: 10.1038/s41467-019-10161-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Lot Snijders Blok
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Justine Rousseau
- CHU Sainte-Justine Research Center, Montreal, QC H3T 1C5, Canada
| | - Joanna Twist
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Sophie Ehresmann
- CHU Sainte-Justine Research Center, Montreal, QC H3T 1C5, Canada
| | - Motoki Takaku
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Hanka Venselaar
- Centre for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Lance H Rodan
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Catherine B Nowak
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Jessica Douglas
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Kathryn J Swoboda
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Marcie A Steeves
- Department of Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Inderneel Sahai
- Department of Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Connie T R M Stumpel
- Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | - Alexander P A Stegmann
- Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | | | - Marcia Willing
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Elise Fiala
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | - William T Gibson
- British Columbia Children's Hospital Research Institute, Vancouver, BC V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC V6H 3N1, Canada
| | - Ana S A Cohen
- British Columbia Children's Hospital Research Institute, Vancouver, BC V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC V6H 3N1, Canada
| | - Ruky Agbahovbe
- British Columbia Children's Hospital Research Institute, Vancouver, BC V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC V6H 3N1, Canada
| | - A Micheil Innes
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - P Y Billie Au
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Julia Rankin
- Department of Clinical Genetics, Royal Devon and Exeter NHS Foundation Trust (Heavitree), Exeter, EX2 5DW, UK
| | - Ilse J Anderson
- Division of Genetics, Department of Medicine, University of Tennessee Medical Center, Knoxville, TN 37920, USA
| | | | | | | | - Alexandra Afenjar
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris ; Department of Medical Genetics and Centre de Référence Malformations et maladies congénitales du cervelet et déficiences intellectuelles de causes rares, Armand Trousseau Hospital, GHUEP, AP-HP, Paris, 75012, France
| | - Boris Keren
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France.,Groupe de Recherche Clinique (GRC) 'déficience intellectuelle et autisme' UPMC, Paris, 75005, France
| | - Caroline Nava
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France.,Groupe de Recherche Clinique (GRC) 'déficience intellectuelle et autisme' UPMC, Paris, 75005, France.,INSERM, U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, 75013, Paris, France
| | - Julien Buratti
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France
| | - Arnaud Isapof
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris 06; Department Child Neurology and Reference Center for Neuromuscular Diseases "Nord/Est/Ile-de-France", FILNEMUS, Armand Trousseau Hospital, GHUEP, AP-HP, Paris, 75012, France
| | - Diana Rodriguez
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris 06; Department of Child Neurology and National Reference Center for Neurogenetic Disorders, Armand Trousseau Hospital, GHUEP, AP-HP, INSERM U1141, 75012, Paris, France
| | - Raymond Lewandowski
- Clinical Genetics Division, Virginia Commonwealth University Health System, Richmond, VA 23298, USA
| | - Jennifer Propst
- Clinical Genetics Division, Virginia Commonwealth University Health System, Richmond, VA 23298, USA
| | - Ton van Essen
- Clinical Genetics Department, University Medical Center Groningen, Groningen, 9700RB, The Netherlands
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 08826, Republic of Korea
| | - Sangmoon Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 08826, Republic of Korea
| | - Jong H Chae
- Department of Pediatrics, Seoul National University College of Medicine, Seoul National University Children's Hospital, Seoul, 08826, Republic of Korea
| | - Susan Price
- Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7HE, UK
| | | | | | | | - Christiane Zweier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - Martin G Bialer
- Northwell Health, Division of Medical Genetics and Genomics, Great Neck, NY 11021, USA
| | - Christine Moore
- Northwell Health, Division of Medical Genetics and Genomics, Great Neck, NY 11021, USA
| | - Marije Koopmans
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Eva H Brilstra
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Glen R Monroe
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Koen L I van Gassen
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Ellen van Binsbergen
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Ruth Newbury-Ecob
- University Hospitals Bristol, Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG, UK
| | - Lucy Bownass
- University Hospitals Bristol, Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG, UK
| | - Ingrid Bader
- Department of Clinical Genetics, University Children's Hospital, Paracelsus Medical University, Salzburg, A-5020, Austria
| | - Johannes A Mayr
- Department of Pediatrics, Salzburger Landeskliniken and Paracelsus Medical University, Salzburg, A-5020, Austria
| | - Saskia B Wortmann
- Department of Pediatrics, Salzburger Landeskliniken and Paracelsus Medical University, Salzburg, A-5020, Austria.,Institute of Human Genetics, Technische Universität München, Munich, 81675, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Kathy J Jakielski
- Communication Sciences and Disorders, Augustana College, Rock Island, IL 61201, USA
| | - Edythe A Strand
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Katja Kloth
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Tatjana Bierhals
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | | | - John D Roberts
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Robert M Petrovich
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | | | | | - Stefan Lelieveld
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Rolph Pfundt
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Sandra Jansen
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Pelagia Deriziotis
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands
| | - Laurence Faivre
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | - Julien Thevenon
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | - Mirna Assoum
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | | | - Tjitske Kleefstra
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Han G Brunner
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands.,Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | - Paul A Wade
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Simon E Fisher
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands. .,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands.
| | - Philippe M Campeau
- CHU Sainte-Justine Research Center, Montreal, QC H3T 1C5, Canada. .,Sainte-Justine Hospital, University of Montreal, Montreal, QC H3T 1C5, Canada.
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13
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Kim JH, Park EY, Chitayat D, Stachura DL, Schaper J, Lindstrom K, Jewett T, Wieczorek D, Draaisma JM, Sinnema M, Hoeberigs C, Hempel M, Bachman KK, Seeley AH, Stone JK, Kong HK, Vukadin L, Richard A, Shinde DN, McWalter K, Si YC, Douglas G, Lim ST, Vissers LELM, Lemaire M, Ahn EYE. SON haploinsufficiency causes impaired pre-mRNA splicing of CAKUT genes and heterogeneous renal phenotypes. Kidney Int 2019; 95:1494-1504. [PMID: 31005274 DOI: 10.1016/j.kint.2019.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 12/10/2018] [Accepted: 01/04/2019] [Indexed: 10/27/2022]
Abstract
Although genetic testing is increasingly used in clinical nephrology, a large number of patients with congenital abnormalities of the kidney and urinary tract (CAKUT) remain undiagnosed with current gene panels. Therefore, careful curation of novel genetic findings is key to improving diagnostic yields. We recently described a novel intellectual disability syndrome caused by de novo heterozygous loss-of-function mutations in the gene encoding the splicing factor SON. Here, we show that many of these patients, including two previously unreported, exhibit a wide array of kidney abnormalities. Detailed phenotyping of 14 patients with SON haploinsufficiency identified kidney anomalies in 8 patients, including horseshoe kidney, unilateral renal hypoplasia, and renal cysts. Recurrent urinary tract infections, electrolyte disturbances, and hypertension were also observed in some patients. SON knockdown in kidney cell lines leads to abnormal pre-mRNA splicing, resulting in decreased expression of several established CAKUT genes. Furthermore, these molecular events were observed in patient-derived cells with SON haploinsufficiency. Taken together, our data suggest that the wide spectrum of phenotypes in patients with a pathogenic SON mutation is a consequence of impaired pre-mRNA splicing of several CAKUT genes. We propose that genetic testing panels designed to diagnose children with a kidney phenotype should include the SON gene.
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Affiliation(s)
- Jung-Hyun Kim
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Eun Young Park
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - David Chitayat
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada; The Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - David L Stachura
- Department of Biological Sciences, California State University Chico, Chico, California, USA
| | - Jörg Schaper
- Institute of Diagnostic and Interventional Radiology, University of Düsseldorf, Düsseldorf, Germany
| | - Kristin Lindstrom
- Division of Genetics and Metabolism, Phoenix Children's Hospital, Phoenix, Arizona, USA
| | - Tamison Jewett
- Department of Pediatrics, Section on Medical Genetics, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Dagmar Wieczorek
- Institute of Human Genetics, University Clinic Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany; Institute of Human Genetics, University Clinic Essen, University Duisburg-Essen, Essen, Germany
| | - Jos M Draaisma
- Department of Pediatrics, Radboudumc Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Margje Sinnema
- Department of Clinical Genetics and School for Oncology & Developmental Biology (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Christianne Hoeberigs
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Maja Hempel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | | | - Joshua K Stone
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Hyun Kyung Kong
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Lana Vukadin
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Alexander Richard
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | | | | | | | | | - Ssang-Taek Lim
- Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama, USA
| | - Lisenka E L M Vissers
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mathieu Lemaire
- Division of Nephrology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada; Cell Biology Program, SickKids Research Institute, University of Toronto, Toronto, Ontario, Canada.
| | - Eun-Young Erin Ahn
- Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama, USA.
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14
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Thompson E, Abdalla E, Superti-Furga A, McAlister W, Kratz L, Unger S, Royer-Bertrand B, Campos-Xavier B, Mittaz-Crettol L, Amin AK, DeSanto C, Wilson DB, Douglas G, Kozel B, Shinawi M. Lamin B receptor-related disorder is associated with a spectrum of skeletal dysplasia phenotypes. Bone 2019; 120:354-363. [PMID: 30448303 DOI: 10.1016/j.bone.2018.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/29/2018] [Accepted: 11/11/2018] [Indexed: 11/20/2022]
Abstract
LBR (Lamin B Receptor) encodes a bifunctional protein important for cholesterol biosynthesis and heterochromatin organization on the inner nuclear membrane. Pathogenic variants in LBR are associated with marked phenotypic variability, ranging from the benign Pelger-Huët anomaly to lethal Greenberg Dysplasia. We performed trio exome sequencing (ES) on two patients with atypical variants of skeletal dysplasia and their unaffected parents. Patient 1 exhibited frontal bossing, mid-face hypoplasia, short stature with rhizomelic limb shortening, and relative macrocephaly at birth. Although remained short, Patient 1 later showed spontaneous improvement in her skeletal findings. Exome sequencing revealed two novel variants in LBR, c.1504C > G (p.Arg502Gly) in exon 12 and c.1748G > T (p.Arg583Leu) in exon 14, which were inherited from her unaffected father and mother, respectively. Sterol analysis revealed an increased level of cholesta‑8,14‑dien‑3β‑ol to 2.9% of total sterols, consistent with a functional deficiency of 3β‑hydroxysterol Δ14‑reductase. Patient 2 presented at birth with short stature and marked rhizomelic limb shortening but later exhibited decreasing severity of shortening of the long bones and improvement in the radiographic skeletal abnormalities although he continued to be significantly short at age 10 years. Exome sequencing revealed that Patient 2 is homozygous for a pathogenic variant c.1534C > T (p.Arg512Trp) in exon 12 of LBR, which was inherited from his unaffected consanguineous parents. This report provides further evidence for a phenotypic spectrum of LBR-associated disorders and expands the genotypic spectrum by describing 3 novel disease-causing variants that have not been previously associated with a disease. Moreover, our data on Patient 1 demonstrate that variants throughout the gene appear to influence both the sterol reductase and nuclear functions of LBR.
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Affiliation(s)
- Eliza Thompson
- Department of Pediatrics, Division of Medical Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - Ebtesam Abdalla
- Department of Human Genetics, Medical Research Institute, Alexandria University, Egypt
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - William McAlister
- Mallinckrodt Institute of Radiology at St. Louis Children's Hospital, Washington University School of Medicine, St Louis, MO, USA
| | - Lisa Kratz
- Department of Neurogenetics, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Sheila Unger
- Division of Genetic Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Beryl Royer-Bertrand
- Division of Genetic Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Belinda Campos-Xavier
- Division of Genetic Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Laureane Mittaz-Crettol
- Division of Genetic Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Asmaa K Amin
- Department of Human Genetics, Medical Research Institute, Alexandria University, Egypt
| | - Cori DeSanto
- Department of Pediatrics, Division of Medical Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - David B Wilson
- Departments of Pediatrics and Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Beth Kozel
- Department of Pediatrics, Division of Medical Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - Marwan Shinawi
- Department of Pediatrics, Division of Medical Genetics, Washington University School of Medicine, St. Louis, MO, USA.
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15
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Blok LS, Rousseau J, Twist J, Ehresmann S, Takaku M, Venselaar H, Rodan LH, Nowak CB, Douglas J, Swoboda KJ, Steeves MA, Sahai I, Stumpel CTRM, Stegmann APA, Wheeler P, Willing M, Fiala E, Kochhar A, Gibson WT, Cohen ASA, Agbahovbe R, Innes AM, Au PYB, Rankin J, Anderson IJ, Skinner SA, Louie RJ, Warren HE, Afenjar A, Keren B, Nava C, Buratti J, Isapof A, Rodriguez D, Lewandowski R, Propst J, van Essen T, Choi M, Lee S, Chae JH, Price S, Schnur RE, Douglas G, Wentzensen IM, Zweier C, Reis A, Bialer MG, Moore C, Koopmans M, Brilstra EH, Monroe GR, van Gassen KLI, van Binsbergen E, Newbury-Ecob R, Bownass L, Bader I, Mayr JA, Wortmann SB, Jakielski KJ, Strand EA, Kloth K, Bierhals T, Roberts JD, Petrovich RM, Machida S, Kurumizaka H, Lelieveld S, Pfundt R, Jansen S, Deriziotis P, Faivre L, Thevenon J, Assoum M, Shriberg L, Kleefstra T, Brunner HG, Wade PA, Fisher SE, Campeau PM. Author Correction: CHD3 helicase domain mutations cause a neurodevelopmental syndrome with macrocephaly and impaired speech and language. Nat Commun 2019; 10:883. [PMID: 30770872 PMCID: PMC6377600 DOI: 10.1038/s41467-019-08800-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- Lot Snijders Blok
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Justine Rousseau
- CHU Sainte-Justine Research Center, Montreal, QC, H3T 1C5, Canada
| | - Joanna Twist
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Sophie Ehresmann
- CHU Sainte-Justine Research Center, Montreal, QC, H3T 1C5, Canada
| | - Motoki Takaku
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Hanka Venselaar
- Centre for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Lance H Rodan
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Catherine B Nowak
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Jessica Douglas
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Kathryn J Swoboda
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Marcie A Steeves
- Department of Medical Genetics, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Inderneel Sahai
- Department of Medical Genetics, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Connie T R M Stumpel
- Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | - Alexander P A Stegmann
- Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | | | - Marcia Willing
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Elise Fiala
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | | | - William T Gibson
- British Columbia Children's Hospital Research Institute, Vancouver, BC, V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6H 3N1, Canada
| | - Ana S A Cohen
- British Columbia Children's Hospital Research Institute, Vancouver, BC, V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6H 3N1, Canada
| | - Ruky Agbahovbe
- British Columbia Children's Hospital Research Institute, Vancouver, BC, V5Z 4H4, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6H 3N1, Canada
| | - A Micheil Innes
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
| | - P Y Billie Au
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
| | - Julia Rankin
- Department of Clinical Genetics, Royal Devon and Exeter NHS Foundation Trust (Heavitree), Exeter, EX2 5DW, UK
| | - Ilse J Anderson
- Division of Genetics, Department of Medicine, University of Tennessee Medical Center, Knoxville, TN, 37920, USA
| | | | | | | | - Alexandra Afenjar
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris ; Department of Medical Genetics and Centre de Référence Malformations et maladies congénitales du cervelet et déficiences intellectuelles de causes rares, Armand Trousseau Hospital, GHUEP, AP-HP, Paris, 75012, France
| | - Boris Keren
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France.,Groupe de Recherche Clinique (GRC) 'déficience intellectuelle et autisme' UPMC, Paris, 75005, France
| | - Caroline Nava
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France.,Groupe de Recherche Clinique (GRC) 'déficience intellectuelle et autisme' UPMC, Paris, 75005, France.,INSERM, U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, 75013, Paris, France
| | - Julien Buratti
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, 75013, France
| | - Arnaud Isapof
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris 06; Department Child Neurology and Reference Center for Neuromuscular Diseases "Nord/Est/Ile-de-France", FILNEMUS, Armand Trousseau Hospital, GHUEP, AP-HP, Paris, 75012, France
| | - Diana Rodriguez
- GRC ConCer-LD, Sorbonne Universités, UPMC Univ Paris 06; Department of Child Neurology and National Reference Center for Neurogenetic Disorders, Armand Trousseau Hospital, GHUEP, AP-HP, INSERM U1141, 75012, Paris, France
| | - Raymond Lewandowski
- Clinical Genetics Division, Virginia Commonwealth University Health System, Richmond, VA, 23298, USA
| | - Jennifer Propst
- Clinical Genetics Division, Virginia Commonwealth University Health System, Richmond, VA, 23298, USA
| | - Ton van Essen
- Clinical Genetics Department, University Medical Center Groningen, Groningen, 9700RB, The Netherlands
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 08826, Republic of Korea
| | - Sangmoon Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 08826, Republic of Korea
| | - Jong H Chae
- Department of Pediatrics, Seoul National University College of Medicine, Seoul National University Children's Hospital, Seoul, 08826, Republic of Korea
| | - Susan Price
- Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7HE, UK
| | | | | | | | - Christiane Zweier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - Martin G Bialer
- Northwell Health, Division of Medical Genetics and Genomics, Great Neck NY, 11021, USA
| | - Christine Moore
- Northwell Health, Division of Medical Genetics and Genomics, Great Neck NY, 11021, USA
| | - Marije Koopmans
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Eva H Brilstra
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Glen R Monroe
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Koen L I van Gassen
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Ellen van Binsbergen
- Department of Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, 3508AB, The Netherlands
| | - Ruth Newbury-Ecob
- University Hospitals Bristol, Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG, UK
| | - Lucy Bownass
- University Hospitals Bristol, Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG, UK
| | - Ingrid Bader
- Department of Clinical Genetics, University Children's Hospital, Paracelsus Medical University, Salzburg, A-5020, Austria
| | - Johannes A Mayr
- Department of Pediatrics, Salzburger Landeskliniken and Paracelsus Medical University, Salzburg, A-5020, Austria
| | - Saskia B Wortmann
- Department of Pediatrics, Salzburger Landeskliniken and Paracelsus Medical University, Salzburg, A-5020, Austria.,Institute of Human Genetics, Technische Universität München, Munich, 81675, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Kathy J Jakielski
- Communication Sciences and Disorders, Augustana College, Rock Island, IL, 61201, USA
| | - Edythe A Strand
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Katja Kloth
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Tatjana Bierhals
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | | | - John D Roberts
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Robert M Petrovich
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | | | | | - Stefan Lelieveld
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Rolph Pfundt
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands
| | - Sandra Jansen
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Pelagia Deriziotis
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands
| | - Laurence Faivre
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne- Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | - Julien Thevenon
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne- Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | - Mirna Assoum
- Equipe Génétique des Anomalies du Développement, Université de Bourgogne- Franche Comté, Dijon, 21070, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon et Université de Bourgogne, Dijon, 21079, France
| | | | - Tjitske Kleefstra
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands
| | - Han G Brunner
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, 6500HB, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands.,Department of Clinical Genetics and GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, 6202AZ, The Netherlands
| | - Paul A Wade
- National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Simon E Fisher
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, 6500AH, The Netherlands. .,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, 6500HE, The Netherlands.
| | - Philippe M Campeau
- CHU Sainte-Justine Research Center, Montreal, QC, H3T 1C5, Canada. .,Sainte-Justine Hospital, University of Montreal, Montreal, QC, H3T 1C5, Canada.
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16
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Torti E, Keren B, Palmer EE, Zhu Z, Afenjar A, Anderson IJ, Andrews MV, Atkinson C, Au M, Berry SA, Bowling KM, Boyle J, Buratti J, Cathey SS, Charles P, Cogne B, Courtin T, Escobar LF, Finley SL, Graham JM, Grange DK, Heron D, Hewson S, Hiatt SM, Hibbs KA, Jayakar P, Kalsner L, Larcher L, Lesca G, Mark PR, Miller K, Nava C, Nizon M, Pai GS, Pappas J, Parsons G, Payne K, Putoux A, Rabin R, Sabatier I, Shinawi M, Shur N, Skinner SA, Valence S, Warren H, Whalen S, Crunk A, Douglas G, Monaghan KG, Person RE, Willaert R, Solomon BD, Juusola J. Variants in TCF20 in neurodevelopmental disability: description of 27 new patients and review of literature. Genet Med 2019; 21:2036-2042. [PMID: 30739909 PMCID: PMC7171701 DOI: 10.1038/s41436-019-0454-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/24/2019] [Indexed: 12/25/2022] Open
Abstract
Purpose: To define the clinical characteristics of patients with variants in TCF20, we describe 27 patients, 26 of whom were identified via exome sequencing. We compare detailed clinical data with 17 previously reported patients. Methods: Patients were ascertained through molecular testing laboratories performing exome sequencing (and other testing) with orthogonal confirmation; collaborating referring clinicians provided detailed clinical information. Results: The cohort of 27 patients all had novel variants, and ranged in age from two to 68 years. All had developmental delay/intellectual disability. Autism spectrum disorders/autistic features were reported in 69%, attention disorders or hyperactivity in 67%, craniofacial features (no recognizable facial gestalt) in 67%, structural brain anomalies in 24%, and seizures in 12%. Additional features affecting various organ systems were described in 93%. In a majority of patients, we did not observe previously reported findings of postnatal overgrowth or craniosynostosis, in comparison to earlier reports. Conclusion: We provide valuable data regarding the prognosis and clinical manifestations of patients with variants in TCF20.
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Affiliation(s)
| | - Boris Keren
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Elizabeth E Palmer
- Genetics of Learning Disability Service, Hunter New England Health, Waratah, NSW, Australia.,Australia School of Women's' and Children' Health, University of New South Wales, Sydney, NSW, Australia
| | | | - Alexandra Afenjar
- Département de génétique et embryologie médicale, Hôpital Trousseau, Assistance publique-Hôpitaux de Paris, Paris, France.,Centre de Référence malformations et maladies congénitales du cervelet, Paris, France.,Sorbonne Universités, GRC ConCer-LD, Hôpital Armand Trousseau, Paris, France
| | - Ilse J Anderson
- Department of Medicine, Division of Genetics, the University of Tennessee Graduate School of Medicine, University Genetics, Knoxville, TN, USA
| | - Marisa V Andrews
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Celia Atkinson
- Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Margaret Au
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Susan A Berry
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Kevin M Bowling
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Jackie Boyle
- Genetics of Learning Disability Service, Hunter New England Health, Waratah, NSW, Australia
| | - Julien Buratti
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Perrine Charles
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France.,Centre de Référence Déficiences Intellectuelles de Causes Rares, Paris, France.,Sorbonne Université, GRC "Déficience Intellectuelle et Autisme", Paris, France
| | - Benjamin Cogne
- CHU Nantes, Service de Génétique Médicale, Nantes, France.,l'Institut du Thorax, INSERM, CNRS, UNIV Nantes, Nantes, France
| | - Thomas Courtin
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Luis F Escobar
- St. Vincent Hospital and Health Services, Indianapolis, IN, USA
| | - Sabra Ledare Finley
- University Genetics, University of Tennessee Medical Center, Knoxville, TN, USA
| | | | - Dorothy K Grange
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Delphine Heron
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France.,Département de génétique et embryologie médicale, Hôpital Trousseau, Assistance publique-Hôpitaux de Paris, Paris, France.,Centre de Référence Déficiences Intellectuelles de Causes Rares, Paris, France.,Sorbonne Université, GRC "Déficience Intellectuelle et Autisme", Paris, France
| | - Stacy Hewson
- Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Susan M Hiatt
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Kathleen A Hibbs
- University of Minnesota Masonic Children's Hospital, Minneapolis, MN, USA
| | - Parul Jayakar
- Division of Genetics and Metabolism, Nicklaus Children's Hospital, Miami, FL, USA
| | - Louisa Kalsner
- Connecticut Children's Medical Center, Farmington, CT, USA.,School of Medicine, University of Connecticut, Farmington, CT, USA
| | - Lise Larcher
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Gaetan Lesca
- Department of Medical Genetics, Lyon University Hospitals, Lyon, France.,Lyon Neuroscience Research Centre, CNRS UMR5292, INSERM U1028, Claude Bernard Lyon I University, Lyon, France
| | - Paul R Mark
- Spectrum Health Medical Genetics, Grand Rapids, MI, USA
| | | | - Caroline Nava
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France.,Sorbonne Universités, Institut du Cerveau et de la Moelle épinière, ICM, Inserm U1127, CNRS UMR 7225, Paris, France
| | - Mathilde Nizon
- CHU Nantes, Service de Génétique Médicale, Nantes, France.,l'Institut du Thorax, INSERM, CNRS, UNIV Nantes, Nantes, France
| | - G Shashidhar Pai
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - John Pappas
- Department of Pediatrics, New York University School of Medicine, New York, NY, USA
| | | | | | - Audrey Putoux
- Department of Medical Genetics, Lyon University Hospitals, Lyon, France.,Lyon Neuroscience Research Centre, CNRS UMR5292, INSERM U1028, Claude Bernard Lyon I University, Lyon, France
| | - Rachel Rabin
- Department of Pediatrics, New York University School of Medicine, New York, NY, USA
| | - Isabelle Sabatier
- Department of Pediatric Neurology, Women Mother and Children Hospital, Lyon University Hospitals, Lyon, France
| | - Marwan Shinawi
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | | | | | - Stephanie Valence
- Service de neuropédiatrie, Hôpital Trousseau, Assistance publique-Hôpitaux de Paris, Paris, France
| | | | - Sandra Whalen
- Unité Fonctionnelle de génétique clinique, Hôpital Armand Trousseau, Assistance publique-Hôpitaux de Paris, Centre de Référence des anomalies du développement et syndromes malformatifs, Paris, France
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17
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Granadillo JL, Chung WK, Hecht L, Corsten-Janssen N, Wegner D, Nij Bijvank SWA, Toler TL, Pineda-Alvarez DE, Douglas G, Murphy JJ, Shimony J, Shinawi M. Variable cardiovascular phenotypes associated with SMAD2 pathogenic variants. Hum Mutat 2018; 39:1875-1884. [PMID: 30157302 DOI: 10.1002/humu.23627] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/20/2018] [Accepted: 07/22/2018] [Indexed: 12/29/2022]
Abstract
SMAD2 is a downstream effector in the TGF-β signaling pathway, which is important for pattern formation and tissue differentiation. Pathogenic variants in SMAD2 have been reported in association with arterial aneurysms and dissections and in large cohorts of subjects with complex congenital heart disease (CHD). We used whole exome sequencing (WES) to investigate the molecular cause of CHD and other congenital anomalies in three probands and of an arterial aneurysm in an additional patient. Patients 1 and 2 presented with complex CHD, developmental delay, seizures, dysmorphic features, short stature, and poor weight gain. Patient 3 was a fetus with complex CHD and heterotaxy. The fourth patient is an adult female with aortic root aneurysm and physical features suggestive of a connective tissue disorder. WES identified pathogenic truncating variants, a splice variant, and a predicted deleterious missense variant in SMAD2. We compare the phenotypes and genotypes in our patients with previously reported cases. Our data suggest two distinct phenotypes associated with pathogenic variants in SMAD2: complex CHD with or without laterality defects and other congenital anomalies, and a late-onset vascular phenotype characterized by arterial aneurysms with connective tissue abnormalities.
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Affiliation(s)
- Jorge L Granadillo
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Wendy K Chung
- Department of Pediatric & Medicine, Columbia University Medical Center, New York, New York
| | - Leah Hecht
- Metabolism Program, Division of Genetics, Children's Hospital Boston, Boston, Massachusetts
| | - Nicole Corsten-Janssen
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Daniel Wegner
- Division of Newborn Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | | | - Tomi L Toler
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | | | | | - Joshua J Murphy
- Division of Pediatric Cardiology, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
- Now at Rush University Medical Center, Chicago, Illinois
| | - Joshua Shimony
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
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18
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Ferreira CR, Xia ZJ, Clément A, Parry DA, Davids M, Taylan F, Sharma P, Turgeon CT, Blanco-Sánchez B, Ng BG, Logan CV, Wolfe LA, Solomon BD, Cho MT, Douglas G, Carvalho DR, Bratke H, Haug MG, Phillips JB, Wegner J, Tiemeyer M, Aoki K, Nordgren A, Hammarsjö A, Duker AL, Rohena L, Hove HB, Ek J, Adams D, Tifft CJ, Onyekweli T, Weixel T, Macnamara E, Radtke K, Powis Z, Earl D, Gabriel M, Russi AHS, Brick L, Kozenko M, Tham E, Raymond KM, Phillips JA, Tiller GE, Wilson WG, Hamid R, Malicdan MC, Nishimura G, Grigelioniene G, Jackson A, Westerfield M, Bober MB, Gahl WA, Freeze HH, Gahl WA, Freeze HH. A Recurrent De Novo Heterozygous COG4 Substitution Leads to Saul-Wilson Syndrome, Disrupted Vesicular Trafficking, and Altered Proteoglycan Glycosylation. Am J Hum Genet 2018; 103:553-567. [PMID: 30290151 DOI: 10.1016/j.ajhg.2018.09.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/31/2018] [Indexed: 12/18/2022] Open
Abstract
The conserved oligomeric Golgi (COG) complex is involved in intracellular vesicular transport, and is composed of eight subunits distributed in two lobes, lobe A (COG1-4) and lobe B (COG5-8). We describe fourteen individuals with Saul-Wilson syndrome, a rare form of primordial dwarfism with characteristic facial and radiographic features. All affected subjects harbored heterozygous de novo variants in COG4, giving rise to the same recurrent amino acid substitution (p.Gly516Arg). Affected individuals' fibroblasts, whose COG4 mRNA and protein were not decreased, exhibited delayed anterograde vesicular trafficking from the ER to the Golgi and accelerated retrograde vesicular recycling from the Golgi to the ER. This altered steady-state equilibrium led to a decrease in Golgi volume, as well as morphologic abnormalities with collapse of the Golgi stacks. Despite these abnormalities of the Golgi apparatus, protein glycosylation in sera and fibroblasts from affected subjects was not notably altered, but decorin, a proteoglycan secreted into the extracellular matrix, showed altered Golgi-dependent glycosylation. In summary, we define a specific heterozygous COG4 substitution as the molecular basis of Saul-Wilson syndrome, a rare skeletal dysplasia distinct from biallelic COG4-CDG.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - William A Gahl
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Hudson H Freeze
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
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19
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Zimmermann J, Remus T, Lemercier G, Barker D, Obrecht D, Gambino G, Douglas G. Anti-tumor cell activity and in vitro profile of the next generation CXCR4 antagonist Balixafortide. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy272.312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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20
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Dines JN, Golden-Grant K, LaCroix A, Muir AM, Cintrón DL, McWalter K, Cho MT, Sun A, Merritt JL, Thies J, Niyazov D, Burton B, Kim K, Fleming L, Westman R, Karachunski P, Dalton J, Basinger A, Ficicioglu C, Helbig I, Pendziwiat M, Muhle H, Helbig KL, Caliebe A, Santer R, Becker K, Suchy S, Douglas G, Millan F, Begtrup A, Monaghan KG, Mefford HC. TANGO2: expanding the clinical phenotype and spectrum of pathogenic variants. Genet Med 2018; 21:601-607. [PMID: 30245509 PMCID: PMC6752277 DOI: 10.1038/s41436-018-0137-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/05/2018] [Indexed: 12/22/2022] Open
Abstract
Purpose TANGO2-related disorders were first described in 2016 and prior to this publication, only 15 individuals with TANGO2-related disorder were described in the literature. Primary features include metabolic crisis with rhabdomyolysis, encephalopathy, intellectual disability, seizures, and cardiac arrhythmias. We assess whether genotype and phenotype of TANGO2-related disorder has expanded since the initial discovery and determine the efficacy of exome sequencing (ES) as a diagnostic tool for detecting variants. Methods We present a series of 14 individuals from 11 unrelated families with complex medical and developmental histories, in whom ES or microarray identified compound heterozygous or homozygous variants in TANGO2. Results The initial presentation of patients with TANGO2-related disorders can be variable, including primarily neurological presentations. We expand the phenotype and genotype for TANGO2, highlighting the variability of the disorder. Conclusion TANGO2-related disorders can have a more diverse clinical presentation than previously anticipated. We illustrate the utility of routine ES data reanalysis whereby discovery of novel disease genes can lead to a diagnosis in previously unsolved cases and the need for additional copy-number variation analysis when ES is performed.
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Affiliation(s)
- Jennifer N Dines
- Department of Medicine, Division of Medical Genetics, University of Washington, Seattle, Washington, USA.,Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Katie Golden-Grant
- Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Amy LaCroix
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
| | - Alison M Muir
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
| | | | | | | | - Angela Sun
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
| | - J Lawrence Merritt
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
| | - Jenny Thies
- Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Dmitriy Niyazov
- Division of Medical Genetics, Ochsner Health System and University of Queensland, Brisbane, Australia
| | - Barbara Burton
- Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg SOM, Chicago, Illinois, USA
| | - Katherine Kim
- Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg SOM, Chicago, Illinois, USA
| | - Leah Fleming
- Genetics and Metabolic Clinic, St. Luke's Children's Hospital System, Boise, Idaho, USA
| | - Rachel Westman
- Genetics and Metabolic Clinic, St. Luke's Children's Hospital System, Boise, Idaho, USA
| | - Peter Karachunski
- Department of Neurology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Joline Dalton
- Department of Neurology, University of Minnesota, Minneapolis, Minnesota, USA
| | | | - Can Ficicioglu
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ingo Helbig
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Neuropediatrics, Universitätsklinikum Schleswig Holstein Campus Kiel, Kiel, Germany
| | - Manuela Pendziwiat
- Department of Neuropediatrics, Universitätsklinikum Schleswig Holstein Campus Kiel, Kiel, Germany
| | - Hiltrud Muhle
- Department of Neuropediatrics, Universitätsklinikum Schleswig Holstein Campus Kiel, Kiel, Germany
| | - Katherine L Helbig
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Almuth Caliebe
- Institute for Human Genetics, Universitätsklinikum Schleswig Holstein Campus Kiel, Kiel, Germany
| | - René Santer
- Department of Pediatrics, University Medical Center Eppendorf, Hamburg, Germany
| | - Kolja Becker
- Department of Neuropediatrics, Universitätsklinikum Schleswig Holstein Campus Kiel, Kiel, Germany
| | | | | | | | | | | | - Heather C Mefford
- Department of Pediatrics, University of Washington, Seattle, Washington, USA.
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Douglas G, Cho MT, Telegrafi A, Winter S, Carmichael J, Zackai EH, Deardorff MA, Harr M, Williams L, Psychogios A, Erwin AL, Grebe T, Retterer K, Juusola J. De novo
missense variants in
MEIS2
recapitulate the microdeletion phenotype of cardiac and palate abnormalities, developmental delay, intellectual disability and dysmorphic features. Am J Med Genet A 2018; 176:1845-1851. [DOI: 10.1002/ajmg.a.40368] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/14/2018] [Accepted: 05/28/2018] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | - Susan Winter
- Valley Children's Hospital Central California Madera California
| | | | - Elaine H. Zackai
- The Division of GeneticsThe Children's Hospital of Philadelphia Philadelphia Pennsylvania
- The Department of PediatricsThe Perelman School of Medicine, The University of Pennsylvania Philadelphia Pennsylvania
| | - Matthew A. Deardorff
- The Division of GeneticsThe Children's Hospital of Philadelphia Philadelphia Pennsylvania
- The Department of PediatricsThe Perelman School of Medicine, The University of Pennsylvania Philadelphia Pennsylvania
| | - Margaret Harr
- The Division of GeneticsThe Children's Hospital of Philadelphia Philadelphia Pennsylvania
| | - Linford Williams
- Children's Hospital of Pittsburgh of UPMC Pittsburgh Pennsylvania
| | - Apostolos Psychogios
- The Departments of PediatricsInternal Medicine, and Cardiology, University of Kentucky Lexington Kentucky
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22
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Patel J, Chuaiphichai S, Douglas G, Channon KM. P342A new role for RGS-1 in vascular function and blood pressure regulation. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Patel
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - S Chuaiphichai
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - G Douglas
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - K M Channon
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
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23
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Chuaiphichai S, Rashbrook VS, Hale AB, Trelfa L, Mcneill E, Lygate CA, Channon KM, Douglas G. P350Deficiency in endothelial cell tetrahydrobiopterin increases resistance vascular remodelling, blood pressure, and susceptibility to aortic abdominal aneurysm in response to angiotensin II. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Chuaiphichai
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - V S Rashbrook
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - A B Hale
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - L Trelfa
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - E Mcneill
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - C A Lygate
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - K M Channon
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
| | - G Douglas
- University of Oxford, Cardiovascular Medicine, Oxford, United Kingdom
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24
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Stadnyk AW, Douglas G, Comeau A, Jain U, Schwaeble W, Stover C, Bieko R, Langille M. A154 PROPERDIN DEFICIENCY DOES NOT IMPACT THE MOUSE RESPONSE TO DSS-INDUCED COLITIS DESPITE DIFFERENCES IN COLONIC MICROBIOME. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A W Stadnyk
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - G Douglas
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - A Comeau
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - U Jain
- Microbiology and immunology, Dalhousie University, Halifax, NS, Canada
| | - W Schwaeble
- University of Leicester, Leicester, United Kingdom
| | - C Stover
- University of Leicester, Leicester, United Kingdom
| | - R Bieko
- Microbiology and immunology, Dalhousie University, Halifax, NS, Canada
| | - M Langille
- Pediatrics, Dalhousie University, Halifax, NS, Canada
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25
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Sadikovic B, Wang J, El-Hattab AW, Landsverk M, Douglas G, Brundage EK, Craigen WJ, Schmitt ES, Wong LJC. Correction: Sequence Homology at the Breakpoint and Clinical Phenotype of Mitochondrial DNA Deletion Syndromes. PLoS One 2017; 12:e0188610. [PMID: 29155871 PMCID: PMC5695760 DOI: 10.1371/journal.pone.0188610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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26
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Gladstone M, McLinden M, Douglas G, Jolley E, Schmidt E, Chimoyo J, Magombo H, Lynch P. 'Maybe I will give some help…. maybe not to help the eyes but different help': an analysis of care and support of children with visual impairment in community settings in Malawi. Child Care Health Dev 2017; 43:608-620. [PMID: 28393382 PMCID: PMC5485081 DOI: 10.1111/cch.12462] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 03/03/2017] [Accepted: 03/13/2017] [Indexed: 01/03/2023]
Abstract
BACKGROUND Visual impairment in children is common in low and middle-income settings. Whilst visual impairment (VI) can impact on the development of children, many reach full potential with appropriate early intervention programmes. Although there is increased emphasis on early child development globally, it is not yet clear how to provide specific programmes for children with VI in low and middle-income settings. This study aims to identify facilitators and barriers to the provision of a developmental stimulation programme for children with VI in rural and urban Malawi. METHODS We undertook 6 focus groups, 10 home observations and 20 in-depth interviews with carers of children with VI under 6 years in urban and rural Southern Malawi. We utilised topic guides relating to care, play, communication and feeding. Qualitative data were subject to thematic analysis that included placing themes within Bronfenbrenner's ecological framework. We established authenticity of themes through feedback from participants. RESULTS We identified themes within Bronfenbrenner's framework at five levels: (1) blindness acting as a barrier to stimulation and communication, health and complex needs all affecting the individual child; (2) understanding of VI, ability to be responsive at the microsystem level of the carer; (3) support from other carers at microsystem level within a mesosystem; (4) support from other professionals (knowledge of, identification and management of children with VI, responsibilities and gender roles, environmental safety and prejudice, stigma and child protection all at the level of the exosystem. DISCUSSION This study has revealed the requirements needed in order to produce meaningful and appropriate programmes to support nutrition, care and early stimulation for children with VI in this and similar African settings. This includes supporting carers to understand their child's developmental needs, how to better communicate with, feed and stimulate their child; offering advice sensitive to carers' responsibilities and professional training to better support carers and challenge community stigma.
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Affiliation(s)
- M. Gladstone
- Department of Women and Children's Health, Institute of Translational MedicineUniversity of Liverpool, Alder Hey NHS Children's Foundation TrustLiverpoolUK
| | - M. McLinden
- Visual Impairment Centre for Teaching and Research (VICTAR), School of EducationUniversity of BirminghamBirminghamUK
| | - G. Douglas
- Visual Impairment Centre for Teaching and Research (VICTAR), School of EducationUniversity of BirminghamBirminghamUK
| | - E. Jolley
- Department of Strategic Programme DevelopmentEvidence and Research (SPIDER)SightsaversWest SussexUK
| | - E. Schmidt
- Department of Strategic Programme DevelopmentEvidence and Research (SPIDER)SightsaversWest SussexUK
| | - J. Chimoyo
- Montfort Special Needs Education CollegeLimbeMalawi
| | - H. Magombo
- Montfort Special Needs Education CollegeLimbeMalawi
| | - P. Lynch
- Visual Impairment Centre for Teaching and Research (VICTAR), School of EducationUniversity of BirminghamBirminghamUK
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Abstract
Introduction We wished to obtain a snapshot of current service provision and how this could best be developed approximately one year on from the introduction of the National Institute for Clinical Excellence (NICE) guidelines for the management of chronic obstructive pulmonary disease (COPD) and the inclusion of COPD care in the New GMS Contract Quality and Outcomes Framework (QOF). Methodology A questionnaire-based survey sent to every general practice (n = 84) in Grampian. Results Responses were received from 75 of 84 practices (89%). Questionnaires were returned by both general practitioners (GPs) and practice nurses in 45 practices (54%). All responding practices reported that they had COPD registers. 60/75 (80%) of practices reported having a dedicated COPD clinic; 70/75 (93%) had a spirometer. Areas identified for service development were: quality assuring training in COPD care and spirometry; expanding pulmonary rehabilitation provision (86%), delivering this service locally (54%) and in primary care (75%); standardising referral, assessment and communication about provision of home oxygen; training in pulse oximetry (71%). Conclusion This data has important implications for the validity of the quality indicators (QOF) under the new GMS contract. Our respondents identified areas where the new GMS contract QOF could be improved, as well as providing useful suggestions for service development. Respondents recognised that not all clinical services can be effectively delivered by general practice with data supporting the development of intermediate care services for people with COPD.
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Affiliation(s)
- J Cleland
- Department of General Practice and Primary Care, Foresterhill Health Centre, Westburn Road, University of Aberdeen, AB25 2AY.
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28
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Parente DJ, Garriga C, Baskin B, Douglas G, Cho MT, Araujo GC, Shinawi M. Neuroligin 2 nonsense variant associated with anxiety, autism, intellectual disability, hyperphagia, and obesity. Am J Med Genet A 2016; 173:213-216. [DOI: 10.1002/ajmg.a.37977] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 08/24/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel J. Parente
- Department of Family Medicine; University of Kansas Medical Center; Kansas City Kansas
| | | | | | | | | | - Gabriel C. Araujo
- Department of Psychology; St. Louis Children's Hospital; St. Louis Missouri
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine; Department of Pediatrics; Washington University School of Medicine; St. Louis Missouri
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29
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Hulme C, Robinson PG, Saloniki EC, Vinall-Collier K, Baxter PD, Douglas G, Gibson B, Godson JH, Meads D, Pavitt SH. Shaping dental contract reform: a clinical and cost-effective analysis of incentive-driven commissioning for improved oral health in primary dental care. BMJ Open 2016; 6:e013549. [PMID: 27609858 PMCID: PMC5020665 DOI: 10.1136/bmjopen-2016-013549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To evaluate the clinical and cost-effectiveness of a new blended dental contract incentivising improved oral health compared with a traditional dental contract based on units of dental activity (UDAs). DESIGN Non-randomised controlled study. SETTING Six UK primary care dental practices, three working under a new blended dental contract; three matched practices under a traditional contract. PARTICIPANTS 550 new adult patients. INTERVENTIONS A new blended/incentive-driven primary care dentistry contract and service delivery model versus the traditional contract based on UDAs. MAIN OUTCOME MEASURES Primary outcome was as follows: percentage of sites with gingival bleeding on probing. Secondary outcomes were as follows: extracted and filled teeth (%), caries (International Caries Detection and Assessment System (ICDAS)), oral health-related quality of life (Oral Health Impact Profile-14 (OHIP-14)). Incremental cost-effective ratios used OHIP-14 and quality adjusted life years (QALYs) derived from the EQ-5D-3L. RESULTS At 24 months, 291/550 (53%) patients returned for final assessment; those lost to follow-up attended 6.46 appointments on average (SD 4.80). The primary outcome favoured patients in the blended contract group. Extractions and fillings were more frequent in this group. Blended contracts were financially attractive for the dental provider but carried a higher cost for the service commissioner. Differences in generic health-related quality of life were negligible. Positive changes over time in oral health-related quality of life in both groups were statistically significant. CONCLUSIONS This is the first UK study to assess the clinical and cost-effectiveness of a blended contract in primary care dentistry. Although the primary outcome favoured the blended contract, the results are limited because 47% patients did not attend at 24 months. This is consistent with 39% of adults not being regular attenders and 27% only visiting their dentist when they have a problem. Promotion of appropriate attendance, especially among those with high need, necessitates being factored into recruitment strategies of future studies.
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Affiliation(s)
- C Hulme
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - P G Robinson
- School of Oral and Dental Sciences, University of Bristol, Bristol, UK
| | - E C Saloniki
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | | | - P D Baxter
- Division of Epidemiology & Biostatistics, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, Leeds, UK
| | - G Douglas
- School of Dentistry, University of Leeds, Leeds, UK
| | - B Gibson
- Unit of Dental Public Health, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - J H Godson
- School of Dentistry, University of Leeds, Leeds, UK
| | - D Meads
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - S H Pavitt
- Director of the Dental Translational and Clinical Research Unit, School of Dentistry, University of Leeds, Leeds, UK
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Affiliation(s)
| | | | - E P Davison
- Newcastle University Hospitals, University of Newcastle upon Tyne
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31
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Kim JH, Shinde D, Reijnders M, Hauser N, Belmonte R, Wilson G, Bosch D, Bubulya P, Shashi V, Petrovski S, Stone J, Park E, Veltman J, Sinnema M, Stumpel C, Draaisma J, Nicolai J, Yntema H, Lindstrom K, de Vries B, Jewett T, Santoro S, Vogt J, Bachman K, Seeley A, Krokosky A, Turner C, Rohena L, Hempel M, Kortüm F, Lessel D, Neu A, Strom T, Wieczorek D, Bramswig N, Laccone F, Behunova J, Rehder H, Gordon C, Rio M, Romana S, Tang S, El-Khechen D, Cho M, McWalter K, Douglas G, Baskin B, Begtrup A, Funari T, Schoch K, Stegmann A, Stevens S, Zhang DE, Traver D, Yao X, MacArthur D, Brunner H, Mancini G, Myers R, Owen L, Lim ST, Stachura D, Vissers L, Ahn EY, Vissers LELM, Ahn EYE. De Novo Mutations in SON Disrupt RNA Splicing of Genes Essential for Brain Development and Metabolism, Causing an Intellectual-Disability Syndrome. Am J Hum Genet 2016; 99:711-719. [PMID: 27545680 PMCID: PMC5011044 DOI: 10.1016/j.ajhg.2016.06.029] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 06/24/2016] [Indexed: 12/01/2022] Open
Abstract
The overall understanding of the molecular etiologies of intellectual disability (ID) and developmental delay (DD) is increasing as next-generation sequencing technologies identify genetic variants in individuals with such disorders. However, detailed analyses conclusively confirming these variants, as well as the underlying molecular mechanisms explaining the diseases, are often lacking. Here, we report on an ID syndrome caused by de novo heterozygous loss-of-function (LoF) mutations in SON. The syndrome is characterized by ID and/or DD, malformations of the cerebral cortex, epilepsy, vision problems, musculoskeletal abnormalities, and congenital malformations. Knockdown of son in zebrafish resulted in severe malformation of the spine, brain, and eyes. Importantly, analyses of RNA from affected individuals revealed that genes critical for neuronal migration and cortex organization (TUBG1, FLNA, PNKP, WDR62, PSMD3, and HDAC6) and metabolism (PCK2, PFKL, IDH2, ACY1, and ADA) are significantly downregulated because of the accumulation of mis-spliced transcripts resulting from erroneous SON-mediated RNA splicing. Our data highlight SON as a master regulator governing neurodevelopment and demonstrate the importance of SON-mediated RNA splicing in human development.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Lisenka E L M Vissers
- Department of Human Genetics, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands.
| | - Eun-Young Erin Ahn
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA.
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32
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Kerr A, Tam L, Cioroch M, Hale A, Douglas G, Channon K, Wade-Martins R. A novel combinatorial non-viral vector to treat familial hypercholesterolaemia (FH). Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Teng Z, Douglas G, Brown A, Sutcliffe M, Gillard J. Impact of fibre orientation in fibrous cap on the mechanical loading in human coronary atherosclerotic plaques. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Corcoran C, Douglas G, Pavey S, Fielding A, McLinden M, McCall S. Network 1000: the changing needs and circumstances of visually-impaired people: project overview. British Journal of Visual Impairment 2016. [DOI: 10.1177/0264619604050045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This article outlines the progress of a newly-commissioned three year study known as Network 1000. It is a three-year project funded through the Community Fund and is being carried out by the University of Birmingham on behalf of Vision 2020. The project’s aim is to create a panel survey of 1000 visually-impaired people to be interviewed regularly over the three-year period, and hopefully beyond, enabling their changing needs and circumstances to be monitored over time. The findings will be used to influence policy-makers and service-providers, and will also be disseminated to a wider audience of people with an interest in visual impairment. Building on the longitudinal nature of the project enables the project team to develop a methodology that is both democratic and inclusive. The underlying research philosophy is one of inclusion and participation and in this respect the people this research affects the most - those who are visually impaired - are involved in all stages of the research process. People with a visual impairment have played a key role in generating the data and the themes that will drive the construction of the main survey instrument. The article is divided into five sections that describe the progress of the project to date: first, it briefly outlines the background to the project; second, it describes the underlying philosophy behind the democratic approach to inclusion and participant involvement; third, it presents preliminary results from generative interviews; fourth, it discusses how the team will recruit participants to the project with particular reference to the two-stage sample design that has been adopted; and finally, it describes how this two-stage approach will be operationalized. The article concludes by outlining the next phase of the project and with a short reflection on the research process to date.
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Affiliation(s)
- C. Corcoran
- VICTAR, School of Education, University of Birmingham, Birmingham B15 2TT, UK,
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35
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Tanaka AJ, Cho MT, Retterer K, Jones JR, Nowak C, Douglas J, Jiang YH, McConkie-Rosell A, Schaefer GB, Kaylor J, Rahman OA, Telegrafi A, Friedman B, Douglas G, Monaghan KG, Chung WK. De novo pathogenic variants in CHAMP1 are associated with global developmental delay, intellectual disability, and dysmorphic facial features. Cold Spring Harb Mol Case Stud 2016; 2:a000661. [PMID: 27148580 PMCID: PMC4849844 DOI: 10.1101/mcs.a000661] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
We identified five unrelated individuals with significant global developmental delay and intellectual disability (ID), dysmorphic facial features and frequent microcephaly, and de novo predicted loss-of-function variants in chromosome alignment maintaining phosphoprotein 1 (CHAMP1). Our findings are consistent with recently reported de novo mutations in CHAMP1 in five other individuals with similar features. CHAMP1 is a zinc finger protein involved in kinetochore–microtubule attachment and is required for regulating the proper alignment of chromosomes during metaphase in mitosis. Mutations in CHAMP1 may affect cell division and hence brain development and function, resulting in developmental delay and ID.
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Affiliation(s)
- Akemi J Tanaka
- Department of Pediatrics, Columbia University Medical Center, New York, New York 10032, USA
| | | | | | - Julie R Jones
- Greenwood Genetic Center, Greenwood, South Carolina 29646, USA
| | - Catherine Nowak
- Boston Children's Hospital, Boston, Massachusetts 02115, USA
| | - Jessica Douglas
- Boston Children's Hospital, Boston, Massachusetts 02115, USA
| | - Yong-Hui Jiang
- Duke University Medical Center, Durham, North Carolina 27710, USA
| | | | | | - Julie Kaylor
- Arkansas Children's Hospital, Little Rock, Arkansas 72202, USA
| | - Omar A Rahman
- Divisions of Medical Genetics and Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA
| | | | | | | | | | - Wendy K Chung
- Department of Pediatrics, Columbia University Medical Center, New York, New York 10032, USA;; Department of Medicine, Columbia University Medical Center, New York, New York 10032, USA
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Yang H, Douglas G, Monaghan KG, Retterer K, Cho MT, Escobar LF, Tucker ME, Stoler J, Rodan LH, Stein D, Marks W, Enns GM, Platt J, Cox R, Wheeler PG, Crain C, Calhoun A, Tryon R, Richard G, Vitazka P, Chung WK. De novo truncating variants in the AHDC1 gene encoding the AT-hook DNA-binding motif-containing protein 1 are associated with intellectual disability and developmental delay. Cold Spring Harb Mol Case Stud 2016; 1:a000562. [PMID: 27148574 PMCID: PMC4850891 DOI: 10.1101/mcs.a000562] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Whole-exome sequencing (WES) represents a significant breakthrough in clinical genetics, and identifies a genetic etiology in up to 30% of cases of intellectual disability (ID). Using WES, we identified seven unrelated patients with a similar clinical phenotype of severe intellectual disability or neurodevelopmental delay who were all heterozygous for de novo truncating variants in the AT-hook DNA-binding motif–containing protein 1 (AHDC1). The patients were all minimally verbal or nonverbal and had variable neurological problems including spastic quadriplegia, ataxia, nystagmus, seizures, autism, and self-injurious behaviors. Additional common clinical features include dysmorphic facial features and feeding difficulties associated with failure to thrive and short stature. The AHDC1 gene has only one coding exon, and the protein contains conserved regions including AT-hook motifs and a PDZ binding domain. We postulate that all seven variants detected in these patients result in a truncated protein missing critical functional domains, disrupting interactions with other proteins important for brain development. Our study demonstrates that truncating variants in AHDC1 are associated with ID and are primarily associated with a neurodevelopmental phenotype.
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Affiliation(s)
- Hui Yang
- GeneDx, Gaithersburg, Maryland 20877, USA
| | | | | | | | | | - Luis F Escobar
- Peyton Manning Children's Hospital at St. Vincent, Indianapolis, Indiana 46260, USA
| | - Megan E Tucker
- Peyton Manning Children's Hospital at St. Vincent, Indianapolis, Indiana 46260, USA
| | - Joan Stoler
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts 02115, USA
| | - Lance H Rodan
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts 02115, USA
| | - Diane Stein
- Stein Life Child Neurology, Irvine, California 92604, USA
| | - Warren Marks
- Cook Children's Medical Center, Fort Worth, Texas 76104, USA
| | - Gregory M Enns
- Division of Medical Genetics, Lucile Packard Children's Hospital Stanford, Palo Alto, California 94304, USA
| | - Julia Platt
- Division of Medical Genetics, Lucile Packard Children's Hospital Stanford, Palo Alto, California 94304, USA
| | - Rachel Cox
- Division of Medical Genetics, Lucile Packard Children's Hospital Stanford, Palo Alto, California 94304, USA
| | | | - Carrie Crain
- Nemours Children's Hospital, Orlando, Florida 32827, USA
| | - Amy Calhoun
- University of Minnesota Medical Center, Minneapolis, Minnesota 55454, USA
| | - Rebecca Tryon
- University of Minnesota Medical Center, Minneapolis, Minnesota 55454, USA
| | | | | | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University Medical Center, New York, New York 10032, USA
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Bhoj EJ, Li D, Harr M, Edvardson S, Elpeleg O, Chisholm E, Juusola J, Douglas G, Guillen Sacoto MJ, Siquier-Pernet K, Saadi A, Bole-Feysot C, Nitschke P, Narravula A, Walke M, Horner MB, Day-Salvatore DL, Jayakar P, Vergano SAS, Tarnopolsky MA, Hegde M, Colleaux L, Crino P, Hakonarson H. Mutations in TBCK, Encoding TBC1-Domain-Containing Kinase, Lead to a Recognizable Syndrome of Intellectual Disability and Hypotonia. Am J Hum Genet 2016; 98:782-8. [PMID: 27040691 DOI: 10.1016/j.ajhg.2016.03.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 03/16/2016] [Indexed: 12/15/2022] Open
Abstract
Through an international multi-center collaboration, 13 individuals from nine unrelated families and affected by likely pathogenic biallelic variants in TBC1-domain-containing kinase (TBCK) were identified through whole-exome sequencing. All affected individuals were found to share a core phenotype of intellectual disability and hypotonia, and many had seizures and showed brain atrophy and white-matter changes on neuroimaging. Minor non-specific facial dysmorphism was also noted in some individuals, including multiple older children who developed coarse features similar to those of storage disorders. TBCK has been shown to regulate the mammalian target of rapamycin (mTOR) signaling pathway, which is also stimulated by exogenous leucine supplementation. TBCK was absent in cells from affected individuals, and decreased phosphorylation of phospho-ribosomal protein S6 was also observed, a finding suggestive of downregulation of mTOR signaling. Lastly, we demonstrated that activation of the mTOR pathway in response to L-leucine supplementation was retained, suggesting a possible avenue for directed therapies for this condition.
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Affiliation(s)
- Elizabeth J Bhoj
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Department of Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
| | - Dong Li
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Margaret Harr
- Department of Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Shimon Edvardson
- Pediatric Neurology Unit, Hadassah University Hospital, Mount Scopus, Jerusalem 91120, Israel; Monique and Jacques Roboh Department of Genetic Research, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - Orly Elpeleg
- Monique and Jacques Roboh Department of Genetic Research, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - Elizabeth Chisholm
- Division of Medical Genetics and Metabolism, Children's Hospital of The King's Daughters, Norfolk, VA 23507, USA
| | | | | | | | - Karine Siquier-Pernet
- INSERM UMR 1163, Laboratory of Molecular and Pathophysiological Bases of Cognitive Disorders, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, Necker-Enfants Malades Hospital, 75015 Paris, France
| | - Abdelkrim Saadi
- Département de Neurologie, Etablissement Hospitalier Spécialisé de Benaknoun, Algers, Algeria
| | - Christine Bole-Feysot
- Genomic Platform, INSERM UMR 1163, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, 75015 Paris, France
| | - Patrick Nitschke
- Plateforme de Bioinformatique, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, 75015 Paris, France
| | | | - Maria Walke
- Nicklaus Children's Hospital, Miami, FL, 33155, USA
| | - Michele B Horner
- Department of Medical Genetics & Genomic Medicine, St. Peter's University Hospital, New Brunswick, NJ 08901, USA
| | - Debra-Lynn Day-Salvatore
- Department of Medical Genetics & Genomic Medicine, St. Peter's University Hospital, New Brunswick, NJ 08901, USA
| | | | - Samantha A Schrier Vergano
- Division of Medical Genetics and Metabolism, Children's Hospital of The King's Daughters, Norfolk, VA 23507, USA
| | - Mark A Tarnopolsky
- Department of Pediatrics, McMaster University Medical Center, Hamilton, ON L8N 3Z5, Canada
| | - Madhuri Hegde
- Emory Genetics Laboratory, Emory University, Decatur, GA 30033, USA
| | - Laurence Colleaux
- INSERM UMR 1163, Laboratory of Molecular and Pathophysiological Bases of Cognitive Disorders, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, Necker-Enfants Malades Hospital, 75015 Paris, France
| | - Peter Crino
- Department of Neurology, Temple University, Philadelphia, PA 19122, USA
| | - Hakon Hakonarson
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
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Chen CA, Bosch DGM, Cho MT, Rosenfeld JA, Shinawi M, Lewis RA, Mann J, Jayakar P, Payne K, Walsh L, Moss T, Schreiber A, Schoonveld C, Monaghan KG, Elmslie F, Douglas G, Boonstra FN, Millan F, Cremers FPM, McKnight D, Richard G, Juusola J, Kendall F, Ramsey K, Anyane-Yeboa K, Malkin E, Chung WK, Niyazov D, Pascual JM, Walkiewicz M, Veluchamy V, Li C, Hisama FM, de Vries BBA, Schaaf C. The expanding clinical phenotype of Bosch-Boonstra-Schaaf optic atrophy syndrome: 20 new cases and possible genotype-phenotype correlations. Genet Med 2016; 18:1143-1150. [PMID: 26986877 DOI: 10.1038/gim.2016.18] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 01/19/2016] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Bosch-Boonstra-Schaaf optic atrophy syndrome (BBSOAS) is an autosomal-dominant disorder characterized by optic atrophy and intellectual disability caused by loss-of-function mutations in NR2F1. We report 20 new individuals with BBSOAS, exploring the spectrum of clinical phenotypes and assessing potential genotype-phenotype correlations. METHODS Clinical features of individuals with pathogenic NR2F1 variants were evaluated by review of medical records. The functional relevance of coding nonsynonymous NR2F1 variants was assessed with a luciferase assay measuring the impact on transcriptional activity. The effects of two start codon variants on protein expression were evaluated by western blot analysis. RESULTS We recruited 20 individuals with novel pathogenic NR2F1 variants (seven missense variants, five translation initiation variants, two frameshifting insertions/deletions, one nonframeshifting insertion/deletion, and five whole-gene deletions). All the missense variants were found to impair transcriptional activity. In addition to visual and cognitive deficits, individuals with BBSOAS manifested hypotonia (75%), seizures (40%), autism spectrum disorder (35%), oromotor dysfunction (60%), thinning of the corpus callosum (53%), and hearing defects (20%). CONCLUSION BBSOAS encompasses a broad range of clinical phenotypes. Functional studies help determine the severity of novel NR2F1 variants. Some genotype-phenotype correlations seem to exist, with missense mutations in the DNA-binding domain causing the most severe phenotypes.Genet Med 18 11, 1143-1150.
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Affiliation(s)
- Chun-An Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.,Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, Texas, USA
| | - Daniëlle G M Bosch
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands.,Bartiméus, Institute for the Visually Impaired, Zeist, The Netherlands.,Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Richard Alan Lewis
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.,Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - John Mann
- Genetics, Kaiser-Permanente Fresno Medical Center, Clovis, California, USA
| | | | - Katelyn Payne
- Riley Hospital for Children, Indianapolis, Indiana, USA
| | - Laurence Walsh
- Riley Hospital for Children, Indianapolis, Indiana, USA.,Departments of Neurology, Medical and Molecular Genetics, and Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Timothy Moss
- Genomic Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | | | | | | | - Frances Elmslie
- South West Thames Regional Genetics Service, St. George's Healthcare NHS Trust, London, UK
| | | | - F Nienke Boonstra
- Bartiméus, Institute for the Visually Impaired, Zeist, The Netherlands.,Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Frans P M Cremers
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands.,Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | | | | | - Fran Kendall
- VMP Genetics, LLC, Atlanta, Georgia, USA.,University of Georgia, Athens, Georgia, USA
| | - Keri Ramsey
- Center for Rare Childhood Disorders, Translational Genomics Research Institute, Phoenix, Arizona, USA
| | - Kwame Anyane-Yeboa
- Department of Pediatrics, Columbia University Medical Center, New York, New York, USA
| | | | - Wendy K Chung
- Department of Pediatrics, Columbia University Medical Center, New York, New York, USA.,Department of Medicine, Columbia University Medical Center, New York, New York, USA
| | - Dmitriy Niyazov
- Division of Medical Genetics, Department of Pediatrics, Ochsner Clinic Foundation, New Orleans, Louisiana
| | - Juan M Pascual
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Magdalena Walkiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | | | - Chumei Li
- McMaster University Medical Center, Hamilton, Ontario, Canada
| | - Fuki M Hisama
- Department of Medicine, Division of Medical Genetics, University of Washington, Seattle, Washington, USA
| | - Bert B A de Vries
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Christian Schaaf
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.,Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, Texas, USA.,Texas Children's Hospital, Houston, Texas, USA
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Dubey S, Agrawal A, Chauhan L, Mukherjee S, Douglas G. Combined trabeculotomy-trabeculectomy with antimetabolite and releasable suture: outcome with primary congenital glaucoma in a north Indian population. Nepal J Ophthalmol 2015; 7:16-25. [PMID: 26695601 DOI: 10.3126/nepjoph.v7i1.13161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To determine the surgical outcomes of combined trabeculotomy- trabeculectomy with mitomycin-C and releasable suture in children with primary congenital glaucoma (PCG) in a North Indian population. DESIGN Retrospective, interventional, consecutive, non-comparative case series. MATERIALS AND METHODS The medical records of 137 eyes of 77 patients who underwent combined trabeculotomy- trabeculectomy with 0.2 mg/ml mitomycin C (MMC) either bilaterally (49 patients) or unilaterally (28 patients) between January 2004 and March 2012 were reviewed retrospectively. The main outcome measures were postoperative intraocular pressures, corneal clarity and diameter, duration of follow-up, success rate and complications. RESULTS The mean preoperative intraocular pressure reduced from 34 ± 7 mm Hg (range 15- 54 mm Hg) to 17 ± 7 mm Hg (range 5 - 32 mm Hg) with a mean reduction of 44 % (P less than 0.001). The mean follow-up period was 24.4 ± 10.3 months (range 6 - 48 months). Complete success defined as intraocular pressure less than 21 mm Hg without any medication and clinically stable glaucoma at last follow-up was achieved in 113 eyes (83 %) while a 'qualified success' of intraocular pressure less than 21 mm Hg with one medication was achieved in ten eyes (7 %). The Kaplan-Meier survival analysis revealed success rates (at 'n' months) of 90 % (6), 85 % (12), 82 % (24), 80 % (36) and 77 % (48). There were no significant intraoperative or postoperative complications. CONCLUSION Primary combined trabeculotomy-trabeculectomy with mitomycin-C and releasable suture offers a viable surgical option in Northern Indian infants with primary congenital glaucoma. The use of 0.2 mg/ml mitomycin C for 2 minutes improves the overall success while the releasable suture decreases the risk of postoperative complications especially associated with the use of antimetabolites.
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Affiliation(s)
- S Dubey
- Dr Shroff's Charity Eye Hospital, 5027, Kedarnath Road, Daryaganj New Delhi 110002, India
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Patel J, McNeill E, Douglas G, Hale A, De Bono J, Lee R, Iqbal A, Regan-Komito D, Stylianou E, Greaves D, Channon K. Rgs-1 regulates leukocyte trafficking in atherosclerosis and aortic aneurysm formation through altered chemokine signalling. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chuaiphichai S, Mcneill E, Douglas G, Crabtree MJ, Bendall JK, Hale AB, Alp NJ, Channon KM. 303A cell-Autonomous role for endothelial GTP cyclohydrolase 1 and tetrahydrobiopterin in blood pressure regulation. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu089.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Patel J, Mcneill E, Douglas G, Hale A, De Bono J, Greaves DR, Channon KM. P623RGS-1 modulates leukocyte trafficking in atherosclerosis and aortic aneurysm formation through chemokine receptor desensitisation. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu098.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Patel J, McNeill E, Douglas G, de Bono J, Greaves D, Channon K. A new role for the regulator of g-protein signalling-1 in inflammatory cell function in angiotensin II-induced aortic aneurysm formation. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2013.11.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pelletier M, Paddock V, Leblanc H, Forgie R, Archer B, Ferguson D, Douglas G, Yip A, Hassan A. The Effect of Transcatheter Aortic Valve Implantation (TAVI) on Cognitive Function. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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45
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Douglas G, Adeney J, Johnston K, Wendling L, Coleman S. Major element, trace element, nutrient, and radionuclide mobility in a mining by-product-amended soil. J Environ Qual 2012; 41:1818-1834. [PMID: 23128739 DOI: 10.2134/jeq2012.0139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This study investigates the use of a mineral processing by-product, neutralized used acid (NUA), primarily composed of gypsum and Fe-oxyhydroxide, as a soil amendment. A 1489-d turf farm field trial assessed nutrient, trace element, and radionuclide mobility of a soil amended with ∼5% by mass to a depth of 15 cm of NUA. Average PO-P fluxes collected as subsoil leachates were 0.7 and 26.6 kg ha yr for NUA-amended and control sites, respectively, equating to a 97% reduction in PO-P loss after 434 kg P ha was applied. Total nitrogen fluxes in NUA-amended soil leachates were similarly reduced by 82%. Incorporation of NUA conferred major changes in leachate geochemistry with a diverse suite of trace elements depleted within NUA-amended leachates. Gypsum dissolution from NUA resulted in an increase from under- to oversaturation of the soil leachates for a range of Fe- and Ca-minerals including calcite and ferrihydrite, many of which have a well-documented ability to assimilate PO-P and trace elements. Isotopic analysis indicated little Pb addition from NUA. Both Sr and Nd isotope results revealed that NUA and added fertilizer became an important source of Ca to leachate and turf biomass. The NUA-amended soils retained a range of U-Th series radionuclides, with little evidence of transfer to soil leachate or turf biomass. Calculated radioactivity dose rates indicate only a small increment due to NUA amendment. With increased nutrient, trace element, and solute retention, and increased productivity, a range of potential agronomic benefits may be conferred by NUA amendment of soils, in addition to the potential to limit offsite nutrient loss and eutrophication.
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Affiliation(s)
- G Douglas
- CSIRO Land and Water, WA, Australia.
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Tang S, Moonnumakal SP, Stevens B, Douglas G, Mason S, Schmitt ES, Eng CM, Katz M, Fang P. Characterization of a recurrent 3.8kb deletion involving exons 17a and 17b within the CFTR gene. J Cyst Fibros 2012; 12:290-4. [PMID: 22998936 DOI: 10.1016/j.jcf.2012.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/29/2012] [Accepted: 08/29/2012] [Indexed: 12/17/2022]
Abstract
BACKGROUND Large deletions within CFTR have been estimated to constitute 1-2% pathogenic alleles, but the occurrence could be much higher in classical cystic fibrosis (CF) patients with one mutation detectable by the routine screening/sequencing work-up. Currently, evaluation of major CFTR rearrangements is not included in the mutation analysis for the reproductive partner of a CF patient/carrier. METHODS Exon sequencing and Multiplex Ligation-dependent Amplification (MLPA) analyses were used to make a molecular diagnosis of two unrelated CF patients. Long PCR, restriction mapping, cloning, and hot start sequencing were employed to accurately annotate the rearrangement junctions. RESULTS Both patients had a heterozygous single amino acid deletion mutation identified by sequencing, and a heterozygous deletion of CFTR exons 17a and 17b detected by MLPA. Molecular characterization of the rearrangement breakpoints indicated that the two patients had an identical complex c.2988+1616_c.3367+356del3796ins62 change, flanked by a pair of perfectly inverted repeats of 32 nucleotides. CONCLUSIONS The c.2988+1616_c.3367+356del3796ins62 complex rearrangement is a recurrent mutation from patients of different ethnic backgrounds. This mutation can be detected through a simple PCR based analysis.
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Affiliation(s)
- Sha Tang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX77030, United States
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Li MM, Wen YY, Chen P, Fang E, Li Y, Douglas G, Carmack CE, Osborne K. Delineating Metastatic Breast Cancer Genome Using Chromosomal Microarray Analysis and Next Generation Sequencing. Cancer Genet 2012. [DOI: 10.1016/j.cancergen.2012.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Fan L, Douglas G, Bendall J, McNeill E, Channon K. C Endothelial specific Nox2 over-expression increases susceptibility to angiotensin II induced aortic dissection. Heart 2012. [DOI: 10.1136/heartjnl-2012-301877a.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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49
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Wen YY, Douglas G, Hu X, Millham M, Cifuentes F, Peters G, Carmack CE, Li M. Abstract 3674: Next generation cancer gene sequencing for clinically actionable mutations. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-3674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Cancer gene mutations are important diagnostic, prognostic, and predictive biologic markers. Mutation detection in cancer tissues has been a real challenge for researchers as a cancer is often associated with multiple mutations and new mutations may occur as the disease progresses and during treatments. Essentially, all cancer tissues are a mosaic mixture of normal and abnormal cell clones. Therefore, a new technology that can target many mutations simultaneously with high sensitivity is exceedingly desirable. Targeted next generation sequencing permits deep sequencing of hundreds of mutations concurrently. We have used a novel next generation sequencing technology that merges multiplex PCR with ion semiconductor sequencing (AmpliSeq, Life Technology) to sequence a panel of clinically actionable cancer gene mutations on 12 tumor samples including 6 archived FFPE samples, 2 bone marrow samples, and 4 cell lines with known mutations, and a normal blood sample as a control. Each sample was run three times to assay for inter-run variability. The panel contains 739 mutations including clinically actionable mutations such as EGFR mutations in exons 18-21, BRAF V600E, KRAS mutations at codons 12, 13, and 61, and many more. Using this technology we successfully identified all known mutations previously detected using Pyposequencing or Sanger sequencing technologies. The most common somatic mutations were also confirmed by Competitive Allele-Specific TaqMan® PCR (castPCR, Life Technology). To determine the sensitivity of the test, we studied mutation positive FFPE samples with serial dilutions. Our results showed that the test can detect mutations at frequencies as low as 5% with 99% confidence. Analysis of mutation calls in different runs showed little inter-run variation. Other benefits of this novel technology are its fast turn around time, which can be as short as two days, and its low cost. Our experience demonstrates that this technology holds great potential clinical utility including diagnostic and therapeutic applications.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 3674. doi:1538-7445.AM2012-3674
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Affiliation(s)
- Yu-Ye Wen
- 1Cancer Genetics Laboratory, Houston, TX
| | | | - Xiafeng Hu
- 1Cancer Genetics Laboratory, Houston, TX
| | | | | | | | | | - Marilyn Li
- 1Cancer Genetics Laboratory, Houston, TX
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Douglas G, Axelrad ME, Brandt ML, Crabtree E, Dietrich JE, French S, Gunn S, Karaviti L, Lopez ME, Macias CG, McCullough LB, Suresh D, Austin E, Reid Sutton V. Guidelines for evaluating and managing children born with disorders of sexual development. Pediatr Ann 2012; 41:e1-7. [PMID: 22494213 DOI: 10.3928/00904481-20120307-09] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Children born with disorders of sexual differentiation (DSD) pose numerous challenges for the parents, family, and treating physicians. The pediatrician is usually the first medical contact for newborns with DSD or for toddlers and children who present with DSD at a later time. Several years ago, we formed a Gender Medicine Team (GMT) at Baylor College of Medicine and Texas Children's Hospital (TCH) to explore and evaluate the most appropriate management strategies, which had long been a matter of concern and contention. Subsequently, the GMT, composed of experts in the fields of endocrinology, ethics, genetics, gynecology, psychology, pediatric surgery, and urology, formed a Task Force to evaluate the information available from our own experiences and from reviews of the literature. Utilizing the Grading of Recommendation, Assessment, Development and Evaluation (GRADE) system to assess the evidence and recommendations, the Task Force developed a consensus statement for clinical management of DSD and for making appropriate sex assignments.
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Affiliation(s)
- Ganka Douglas
- Baylor College of Medicine Texas Children’s Hospital, Houston, TX 77030, USA
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