Cytoonearray-Clinical Diagnostic Tool
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Blueprint Genetics Hereditary Leukemia Panel
Hereditary Leukemia Panel Test code: ON0101 Is a 41 gene panel that includes assessment of non-coding variants. Is ideal for patients with a personal history of a syndrome that confers an increased risk of leukemia or patients with a family history of a syndrome that confers an increased risk of leukemia. About Hereditary Leukemia An inherited predisposition to hematological malignancies, namely acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), and bone marrow myelodysplastic syndrome (MDS) may be associated with syndromic features or occur as the principal clinical feature. MDSs and AMLs can occur in the context of syndromic bone marrow failure (eg. dyskeratosis congenita, Fanconi anemia). Other hereditary syndromes with an increased risk of leukemia include Li-Fraumeni syndrome (TP53), ataxia telangiectasia (ATM), Bloom syndrome (BLM), neurofibromatosis type 1 (NF1) and less frequently Noonan syndrome (PTPN11, CBL). Some reports have also shown an association of biallelic germline mutations in constitutional mismatch repair-deficiency syndrome genes, MLH1, MSH2, MSH6, and PMS2 with the development of ALL. Isolated hematological malignancies are associated with germline mutations in RUNX1 (familial platelet syndrome with predisposition to acute myelogenous leukemia), CEBPA (familial AML), GATA2 (GATA2-associated syndromes) and DDX41(DDX41 -related myeloid neoplasms). There is a rapidly expanding list of germline mutations associated with increased risks for myeloid malignancies and inherited predisposition to hematologic malignancies may be more common than has been thought. Many different genetic defects associated with the development of leukemia have been described but the common underlying mechanism is a dysfunctional DNA damage response. Recognition of an inherited cause provides a specific molecular diagnosis and helps to guide treatment, understand unique disease features, prognosis and other organ systems that may be involved, and identify others in the family who may be at risk. -
Program Nr: 1 from the 2004 ASHG Annual Meeting Mutations in A
Program Nr: 1 from the 2004 ASHG Annual Meeting Mutations in a novel member of the chromodomain gene family cause CHARGE syndrome. L.E.L.M. Vissers1, C.M.A. van Ravenswaaij1, R. Admiraal2, J.A. Hurst3, B.B.A. de Vries1, I.M. Janssen1, W.A. van der Vliet1, E.H.L.P.G. Huys1, P.J. de Jong4, B.C.J. Hamel1, E.F.P.M. Schoenmakers1, H.G. Brunner1, A. Geurts van Kessel1, J.A. Veltman1. 1) Dept Human Genetics, UMC Nijmegen, Nijmegen, Netherlands; 2) Dept Otorhinolaryngology, UMC Nijmegen, Nijmegen, Netherlands; 3) Dept Clinical Genetics, The Churchill Hospital, Oxford, United Kingdom; 4) Children's Hospital Oakland Research Institute, BACPAC Resources, Oakland, CA. CHARGE association denotes the non-random occurrence of ocular coloboma, heart defects, choanal atresia, retarded growth and development, genital hypoplasia, ear anomalies and deafness (OMIM #214800). Almost all patients with CHARGE association are sporadic and its cause was unknown. We and others hypothesized that CHARGE association is due to a genomic microdeletion or to a mutation in a gene affecting early embryonic development. In this study array- based comparative genomic hybridization (array CGH) was used to screen patients with CHARGE association for submicroscopic DNA copy number alterations. De novo overlapping microdeletions in 8q12 were identified in two patients on a genome-wide 1 Mb resolution BAC array. A 2.3 Mb region of deletion overlap was defined using a tiling resolution chromosome 8 microarray. Sequence analysis of genes residing within this critical region revealed mutations in the CHD7 gene in 10 of the 17 CHARGE patients without microdeletions, including 7 heterozygous stop-codon mutations. -
Exostoses, Enchondromatosis and Metachondromatosis; Diagnosis and Management
Acta Orthop. Belg., 2016, 82, 102-105 ORIGINAL STUDY Exostoses, enchondromatosis and metachondromatosis; diagnosis and management John MCFARLANE, Tim KNIGHT, Anubha SINHA, Trevor COLE, Nigel KIELY, Rob FREEMAN From the Department of Orthopaedics, Robert Jones Agnes Hunt Hospital, Oswestry, UK We describe a 5 years old girl who presented to the region of long bones and are composed of a carti- multidisciplinary skeletal dysplasia clinic following lage lump outside the bone which may be peduncu- excision of two bony lumps from her fingers. Based on lated or sessile, the knee is the most common clinical examination, radiolographs and histological site (1,10). An isolated exostosis is a common inci- results an initial diagnosis of hereditary multiple dental finding rarely requiring treatment. Disorders exostosis (HME) was made. Four years later she developed further lumps which had the radiological associated with exostoses include HME, Langer- appearance of enchondromas. The appearance of Giedion syndrome, Gardner syndrome and meta- both exostoses and enchondromas suggested a possi- chondromatosis. ble diagnosis of metachondromatosis. Genetic testing Enchondroma are the second most common be- revealed a splice site mutation at the end of exon 11 on nign bone tumour characterised by the formation of the PTPN11 gene, confirming the diagnosis of meta- hyaline cartilage in the medulla of a bone. It occurs chondromatosis. While both single or multiple exosto- most frequently in the hand (60%) and then the feet. ses and enchondromas occur relatively commonly on The typical radiological features are of a well- their own, the appearance of multiple exostoses and defined lucent defect with endosteal scalloping and enchondromas together is rare and should raise the differential diagnosis of metachondromatosis. -
MASA Syndrome in Twin Brothers: Case Report of Sixteen-Year Clinical Follow Up
Paediatr Croat. 2014;58:286-90 PRIKAZ BOLESNIKA / CASE REPORT www.paedcro.com http://dx.doi.org/10.13112/PC.2014.50 MASA syndrome in twin brothers: case report of sixteen-year clinical follow up Matilda Kovač Šižgorić1, Zlatko Sabol1, Filip Sabol2, Tonći Grmoja3, Svjetlana Bela Klancir1, Zdravka Gjergja1, Ljiljana Kipke Sabol1 MASA syndrome (OMIM 303350) is a rare X-linked recessive neurologic disorder, also called CRASH syndrome, spastic paraplegia 1 and Gareis-Mason syndrome. The acronym MASA describes four major signs: Mental retardation, Aphasia, Shuffl ing gait and Adducted thumbs. A more suitable name for this syndrome is L1 syndrome because the disorder has been associated with mutations in the neuronal cell adhesion molecule L1 (L1CAM) gene. The syndrome has severe symptoms in males, while females are carriers because only one X chromosome is aff ected. The aim of this report is to show similarities and diff erences in clinical manifestations between twins with the L1CAM gene mutation and to emphasize the importance of genetic counseling. Our patients were dizygotic twins born prematurely at 35 weeks of gestation. Pregnancy was complicated with early bleeding and gestational diabetes. Immediately after birth, hypertonia of lower extremities was observed in both twins. Sixteen-year clinical follow up showed spastic paraparetic form with shuffl ing gait, clumsiness, delayed speech development, lower intellectual functioning at the level of mild to moderate mental retarda- tion, primary nocturnal enuresis, behavioral and sleep disorder (more pronounced in the second twin). Magnetic resonance imaging of the brain showed complete agenesis of the corpus callosum, complete lack of the anterior commissure, and internal hydrocephalus. -
Kabuki Syndrome
Kabuki syndrome Description Kabuki syndrome is a disorder that affects many parts of the body. It is characterized by distinctive facial features including arched eyebrows; long eyelashes; long openings of the eyelids (long palpebral fissures) with the lower lids turned out (everted) at the outside edges; a flat, broadened tip of the nose; and large protruding earlobes. The name of this disorder comes from the resemblance of its characteristic facial appearance to stage makeup used in traditional Japanese Kabuki theater. People with Kabuki syndrome have mild to severe developmental delay and intellectual disability. Affected individuals may also have seizures, an unusually small head size ( microcephaly), or weak muscle tone (hypotonia). Some have eye problems such as rapid, involuntary eye movements (nystagmus) or eyes that do not look in the same direction (strabismus). Other characteristic features of Kabuki syndrome include short stature and skeletal abnormalities such as abnormal side-to-side curvature of the spine (scoliosis), short fifth (pinky) fingers, or problems with the hip and knee joints. The roof of the mouth may have an abnormal opening (cleft palate) or be high and arched, and dental problems are common in affected individuals. People with Kabuki syndrome may also have fingerprints with unusual features and fleshy pads at the tips of the fingers. These prominent finger pads are called fetal finger pads because they normally occur in human fetuses; in most people they disappear before birth. A wide variety of other health problems occur in some people with Kabuki syndrome. Among the most commonly reported are heart abnormalities, frequent ear infections ( otitis media), hearing loss, and early puberty. -
Targeted Disruption of Shp2 in Chondrocytes Leads to Metachondromatosis with Multiple Cartilaginous Protrusions
ORIGINAL ARTICLE JBMR Targeted Disruption of Shp2 in Chondrocytes Leads to Metachondromatosis With Multiple Cartilaginous Protrusions Harry KW Kim,1,2 Gen‐Sheng Feng,3 Di Chen,4 Philip D King,5 and Nobuhiro Kamiya1,2 1Texas Scottish Rite Hospital for Children, Dallas, TX, USA 2Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA 3Department of Pathology and Division of Biological Sciences, University of California San Diego, La Jolla, CA, USA 4Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA 5Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA ABSTRACT Metachondromatosis is a benign bone disease predominantly observed in the hands and feet of children or young adults demonstrating two different manifestations: a cartilage‐capped bony outgrowth on the surface of the bone called exostosis and ectopic cartilaginous nodules inside the bone called enchondroma. Recently, it has been reported that loss‐of‐function mutations of the SHP2 gene, which encodes the SHP2 protein tyrosine phosphatase, are associated with metachondromatosis. The purpose of this study was to investigate the role of SHP2 in postnatal cartilage development, which is largely unknown. We disrupted Shp2 during the postnatal stage of mouse development in a chondrocyte‐specific manner using a tamoxifen‐inducible system. We found tumor‐like nodules on the hands and feet within a month after the initial induction. The SHP2‐deficient mice demonstrated an exostosis‐like and enchondroma‐like phenotype in multiple bones of the hands, feet, and ribs as assessed by X‐ray and micro‐computed tomography (CT). Histological assessment revealed the disorganization of the growth plate cartilage, a cartilaginous protrusion from the epiphyseal bone, and ectopic cartilage nodules within the bones, which is consistent with the pathological features of metachondromatosis in humans (ie, both exostosis and enchondroma). -
Hirschsprung Disease in an Infant with L1 Syndrome
Hirschsprung Disease in an Infant with L1 Syndrome: Report of a New Case and a Novel L1CAM Variant Teresa Andreone1 1Saint Louis University Care - The Physicians of Saint Louis University October 27, 2020 Abstract L1 syndrome is an X-linked disorder manifesting with congenital hydrocephalus, adducted thumbs and spasticity. There are rare cases of L1 syndrome and coincident Hirschsprung disease, with mutations in the L1CAM gene thought to underlie both. We present a novel pathogenic L1CAM variant in someone with L1 syndrome and Hirschsprung disease. Introduction The L1CAM gene encodes the membrane glycoprotein L1CAM, a calcium-independent cellular adhesion molecule involved in neuronal development. The L1CAM cell adhesion molecule is found on the X chromo- some in humans (and other mammals) and has a 1253 amino acid protein sequence. The extracellular portion is comprised of six immunoglobulin domains followed by five fibronectin type III domains which are con- nected to a small intracellular domain by a transmembrane helix (Figure 1). Mutations in theL1CAM gene cause L1 syndrome, which encompasses a spectrum of disease that includes four major X-linked conditions: X-linked congenital hydrocephalus due to stenosis of the aqueduct of Sylvius (HSAS; OMIM #307000); men- tal retardation, aphasia, shuffling gait and adducted thumbs syndrome (MASA; OMIM #303350); X-linked complicated hereditary spastic paraplegia type 1 (SPG1; OMIM#303350); and X-linked complicated agene- sis of the corpus callosum (OMIM #304100)1. More than 220 disease-causing variants in the L1CAM gene have been identified as causing the four major phenotypes of L1 syndrome2. Additionally, there are reports suggesting that additional mutations in L1CAM can cause mild behavioral and intellectual impairment3. -
University of Groningen Genetics of L1 Syndrome Vos, Yvonne Johanna
University of Groningen Genetics of L1 syndrome Vos, Yvonne Johanna IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2010 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Vos, Y. J. (2010). Genetics of L1 syndrome. [S.n.]. Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Download date: 26-09-2021 Genetics Ll Syndr Yvonne Vos , ' Genetics of Ll syndrome Yvonne Johanna Vos Vos, Yvonne J Genetics of Ll syndrome Proefschrift Groningen ISBN: 978-90-367-4471-3 © Copyright 2010 Y.J. Vos All rights are reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmittedin any form or by any means, without permission of the author. Cover: Bob Vos Lay-out: Helga de Graaf, Studio Eye Candy, Groningen (www.proefschrift.info) Printed by lpskamp Drukkers, Enschede Stellingen behorende bij het proefschrift Genetics of Ll syndrome -·-····· ---· ·· -�--;. -
Prevalence and Incidence of Rare Diseases: Bibliographic Data
Number 1 | January 2019 Prevalence and incidence of rare diseases: Bibliographic data Prevalence, incidence or number of published cases listed by diseases (in alphabetical order) www.orpha.net www.orphadata.org If a range of national data is available, the average is Methodology calculated to estimate the worldwide or European prevalence or incidence. When a range of data sources is available, the most Orphanet carries out a systematic survey of literature in recent data source that meets a certain number of quality order to estimate the prevalence and incidence of rare criteria is favoured (registries, meta-analyses, diseases. This study aims to collect new data regarding population-based studies, large cohorts studies). point prevalence, birth prevalence and incidence, and to update already published data according to new For congenital diseases, the prevalence is estimated, so scientific studies or other available data. that: Prevalence = birth prevalence x (patient life This data is presented in the following reports published expectancy/general population life expectancy). biannually: When only incidence data is documented, the prevalence is estimated when possible, so that : • Prevalence, incidence or number of published cases listed by diseases (in alphabetical order); Prevalence = incidence x disease mean duration. • Diseases listed by decreasing prevalence, incidence When neither prevalence nor incidence data is available, or number of published cases; which is the case for very rare diseases, the number of cases or families documented in the medical literature is Data collection provided. A number of different sources are used : Limitations of the study • Registries (RARECARE, EUROCAT, etc) ; The prevalence and incidence data presented in this report are only estimations and cannot be considered to • National/international health institutes and agencies be absolutely correct. -
MECHANISMS in ENDOCRINOLOGY: Novel Genetic Causes of Short Stature
J M Wit and others Genetics of short stature 174:4 R145–R173 Review MECHANISMS IN ENDOCRINOLOGY Novel genetic causes of short stature 1 1 2 2 Jan M Wit , Wilma Oostdijk , Monique Losekoot , Hermine A van Duyvenvoorde , Correspondence Claudia A L Ruivenkamp2 and Sarina G Kant2 should be addressed to J M Wit Departments of 1Paediatrics and 2Clinical Genetics, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, Email The Netherlands [email protected] Abstract The fast technological development, particularly single nucleotide polymorphism array, array-comparative genomic hybridization, and whole exome sequencing, has led to the discovery of many novel genetic causes of growth failure. In this review we discuss a selection of these, according to a diagnostic classification centred on the epiphyseal growth plate. We successively discuss disorders in hormone signalling, paracrine factors, matrix molecules, intracellular pathways, and fundamental cellular processes, followed by chromosomal aberrations including copy number variants (CNVs) and imprinting disorders associated with short stature. Many novel causes of GH deficiency (GHD) as part of combined pituitary hormone deficiency have been uncovered. The most frequent genetic causes of isolated GHD are GH1 and GHRHR defects, but several novel causes have recently been found, such as GHSR, RNPC3, and IFT172 mutations. Besides well-defined causes of GH insensitivity (GHR, STAT5B, IGFALS, IGF1 defects), disorders of NFkB signalling, STAT3 and IGF2 have recently been discovered. Heterozygous IGF1R defects are a relatively frequent cause of prenatal and postnatal growth retardation. TRHA mutations cause a syndromic form of short stature with elevated T3/T4 ratio. Disorders of signalling of various paracrine factors (FGFs, BMPs, WNTs, PTHrP/IHH, and CNP/NPR2) or genetic defects affecting cartilage extracellular matrix usually cause disproportionate short stature. -
Hereditary Interstitial Lung Diseases Manifesting in Early Childhood in Japan
nature publishing group Clinical Investigation Articles Hereditary interstitial lung diseases manifesting in early childhood in Japan Takuma Akimoto1, Kazutoshi Cho1, Itaru Hayasaka1, Keita Morioka1, Yosuke Kaneshi1, Itsuko Furuta2, Masafumi Yamada3, Tadashi Ariga3 and Hisanori Minakami2 BACKGROUND: Genetic variations associated with intersti- (SP)-B deficiency (1), SP-C abnormality (2), and ATP-binding tial lung diseases (ILD) have not been extensively studied in cassette A3 (ABCA3) deficiency (3). Disorder of alveolar mac- Japanese infants. rophages includes abnormality in granulocyte macrophage METHODS: Forty-three infants with unexplained lung dys- colony–stimulating factor (GM-CSF) receptor (4,5) and dys- function were studied. All 43, 22, and 17 infants underwent function of macrophages associated with hypogammaglobu- analyses of surfactant protein (SP)-C gene (SFTPC) and ATP- linemia (6). Although considerable overlapping exists, genetic binding cassette A3 gene (ABCA3), SP-B gene (SFTPB), and disorders of SP-B and alveolar macrophages are likely to mani- SP-B western blotting, respectively. Two and four underwent fest hereditary pulmonary alveolar proteinosis (hPAP), while assessment of granulocyte macrophage colony-stimulating those of SP-C and ABCA3 are likely to manifest hPAP and/or factor–stimulating phosphorylation of signal transducer and interstitial pneumonitis (7). In addition, genetic disorders of activator of transcription-5 (pSTAT-5) and analyses of FOXF1 thyroid transcription factor-1–associated thyroid dysfunction gene (FOXF1), respectively. (8) and alveolar capillary dysplasia with misalignment of pul- RESULTS: ILD were diagnosed clinically in nine infants: four, monary veins (ACD/MPV) (9) often manifest interstitial lung three, and two had interstitial pneumonitis, hereditary pul- disease (ILD) in early childhood. -
Whole Exome Sequencing Gene Package Intellectual Disability, Version 9.1, 31-1-2020
Whole Exome Sequencing Gene package Intellectual disability, version 9.1, 31-1-2020 Technical information DNA was enriched using Agilent SureSelect DNA + SureSelect OneSeq 300kb CNV Backbone + Human All Exon V7 capture and paired-end sequenced on the Illumina platform (outsourced). The aim is to obtain 10 Giga base pairs per exome with a mapped fraction of 0.99. The average coverage of the exome is ~50x. Duplicate and non-unique reads are excluded. Data are demultiplexed with bcl2fastq Conversion Software from Illumina. Reads are mapped to the genome using the BWA-MEM algorithm (reference: http://bio-bwa.sourceforge.net/). Variant detection is performed by the Genome Analysis Toolkit HaplotypeCaller (reference: http://www.broadinstitute.org/gatk/). The detected variants are filtered and annotated with Cartagenia software and classified with Alamut Visual. It is not excluded that pathogenic mutations are being missed using this technology. At this moment, there is not enough information about the sensitivity of this technique with respect to the detection of deletions and duplications of more than 5 nucleotides and of somatic mosaic mutations (all types of sequence changes). HGNC approved Phenotype description including OMIM phenotype ID(s) OMIM median depth % covered % covered % covered gene symbol gene ID >10x >20x >30x A2ML1 {Otitis media, susceptibility to}, 166760 610627 66 100 100 96 AARS1 Charcot-Marie-Tooth disease, axonal, type 2N, 613287 601065 63 100 97 90 Epileptic encephalopathy, early infantile, 29, 616339 AASS Hyperlysinemia,