Psykisk Utviklingshemming Og Andre Utviklingsavvik
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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. -
Orphanet Report Series Rare Diseases Collection
Marche des Maladies Rares – Alliance Maladies Rares Orphanet Report Series Rare Diseases collection DecemberOctober 2013 2009 List of rare diseases and synonyms Listed in alphabetical order www.orpha.net 20102206 Rare diseases listed in alphabetical order ORPHA ORPHA ORPHA Disease name Disease name Disease name Number Number Number 289157 1-alpha-hydroxylase deficiency 309127 3-hydroxyacyl-CoA dehydrogenase 228384 5q14.3 microdeletion syndrome deficiency 293948 1p21.3 microdeletion syndrome 314655 5q31.3 microdeletion syndrome 939 3-hydroxyisobutyric aciduria 1606 1p36 deletion syndrome 228415 5q35 microduplication syndrome 2616 3M syndrome 250989 1q21.1 microdeletion syndrome 96125 6p subtelomeric deletion syndrome 2616 3-M syndrome 250994 1q21.1 microduplication syndrome 251046 6p22 microdeletion syndrome 293843 3MC syndrome 250999 1q41q42 microdeletion syndrome 96125 6p25 microdeletion syndrome 6 3-methylcrotonylglycinuria 250999 1q41-q42 microdeletion syndrome 99135 6-phosphogluconate dehydrogenase 67046 3-methylglutaconic aciduria type 1 deficiency 238769 1q44 microdeletion syndrome 111 3-methylglutaconic aciduria type 2 13 6-pyruvoyl-tetrahydropterin synthase 976 2,8 dihydroxyadenine urolithiasis deficiency 67047 3-methylglutaconic aciduria type 3 869 2A syndrome 75857 6q terminal deletion 67048 3-methylglutaconic aciduria type 4 79154 2-aminoadipic 2-oxoadipic aciduria 171829 6q16 deletion syndrome 66634 3-methylglutaconic aciduria type 5 19 2-hydroxyglutaric acidemia 251056 6q25 microdeletion syndrome 352328 3-methylglutaconic -
Mackenzie's Mission Gene & Condition List
Mackenzie’s Mission Gene & Condition List What conditions are being screened for in Mackenzie’s Mission? Genetic carrier screening offered through this research study has been carefully developed. It is focused on providing people with information about their chance of having children with a severe genetic condition occurring in childhood. The screening is designed to provide genetic information that is relevant and useful, and to minimise uncertain and unclear information. How the conditions and genes are selected The Mackenzie’s Mission reproductive genetic carrier screen currently includes approximately 1300 genes which are associated with about 750 conditions. The reason there are fewer conditions than genes is that some genetic conditions can be caused by changes in more than one gene. The gene list is reviewed regularly. To select the conditions and genes to be screened, a committee comprised of experts in genetics and screening was established including: clinical geneticists, genetic scientists, a genetic pathologist, genetic counsellors, an ethicist and a parent of a child with a genetic condition. The following criteria were developed and are used to select the genes to be included: • Screening the gene is technically possible using currently available technology • The gene is known to cause a genetic condition • The condition affects people in childhood • The condition has a serious impact on a person’s quality of life and/or is life-limiting o For many of the conditions there is no treatment or the treatment is very burdensome for the child and their family. For some conditions very early diagnosis and treatment can make a difference for the child. -
Psykisk Utviklingshemming Og Forsinket Utvikling
Psykisk utviklingshemming og forsinket utvikling Genpanel, versjon v03 Tabellen er sortert på gennavn (HGNC gensymbol) Navn på gen er iht. HGNC >x10 Andel av genet som har blitt lest med tilfredstillende kvalitet flere enn 10 ganger under sekvensering x10 er forventet dekning; faktisk dekning vil variere. Gen Gen (HGNC Transkript >10x Fenotype (symbol) ID) AAAS 13666 NM_015665.5 100% Achalasia-addisonianism-alacrimia syndrome OMIM AARS 20 NM_001605.2 100% Charcot-Marie-Tooth disease, axonal, type 2N OMIM Epileptic encephalopathy, early infantile, 29 OMIM AASS 17366 NM_005763.3 100% Hyperlysinemia OMIM Saccharopinuria OMIM ABCB11 42 NM_003742.2 100% Cholestasis, benign recurrent intrahepatic, 2 OMIM Cholestasis, progressive familial intrahepatic 2 OMIM ABCB7 48 NM_004299.5 100% Anemia, sideroblastic, with ataxia OMIM ABCC6 57 NM_001171.5 93% Arterial calcification, generalized, of infancy, 2 OMIM Pseudoxanthoma elasticum OMIM Pseudoxanthoma elasticum, forme fruste OMIM ABCC9 60 NM_005691.3 100% Hypertrichotic osteochondrodysplasia OMIM ABCD1 61 NM_000033.3 77% Adrenoleukodystrophy OMIM Adrenomyeloneuropathy, adult OMIM ABCD4 68 NM_005050.3 100% Methylmalonic aciduria and homocystinuria, cblJ type OMIM ABHD5 21396 NM_016006.4 100% Chanarin-Dorfman syndrome OMIM ACAD9 21497 NM_014049.4 99% Mitochondrial complex I deficiency due to ACAD9 deficiency OMIM ACADM 89 NM_000016.5 100% Acyl-CoA dehydrogenase, medium chain, deficiency of OMIM ACADS 90 NM_000017.3 100% Acyl-CoA dehydrogenase, short-chain, deficiency of OMIM ACADVL 92 NM_000018.3 100% VLCAD -
Fibrochondrogenesis, an Antenatal and Postnatal Correlation
Editor-in-Chief: Vikram S. Dogra, MD OPEN ACCESS Department of Imaging Sciences, University of Rochester Medical Center, Rochester, USA HTML format Journal of Clinical Imaging Science For entire Editorial Board visit : www.clinicalimagingscience.org/editorialboard.asp www.clinicalimagingscience.org CASE REPORT Fibrochondrogenesis, an Antenatal and Postnatal Correlation Nischal G. Kundaragi, Kishor Taori, Chetan Jathar, Amit Disawal Department of Radiodiagnosis, Government Medical College, Nagpur, India Address for correspondence: Dr. Nischal G. Kundaragi, ABSTRACT Consultant, Government Medical College, Nagpur and SRM University Fibrochondrogenesis is a rare, neonatally lethal osteochondrodysplasia, with autosomal Medical College, Kanchipurum, recessive inheritance. It differs from other lethal dwarfisms in that it leads to broad, Tamil Nadu, India. long-bone metaphyses (dumb-bell shaped) and pear-shaped vertebral bodies. E-mail: [email protected] We report a case of fibrochondrogenesis with severe pear-shaped platyspondyly, suspected antenatally, and give a comprehensive pictorial review of the antenatal ultrasound and postnatal radiographic findings. Only few cases of fibrochondrogenesis are diagnosed before the termination of pregnancy. Received : 03-01-2012 Accepted : 28-01-2012 Key words: Antenatal diagnosis, fibrochorogenesis, platyspondyly, ultrasonography Published : 18-02-2012 INTRODUCTION (dumbbell shaped) and shortened ribs with pear-shaped vertebral bodies. We report a case of fibrochondrogenesis Fibrochondrogenesis is a genetically inherited form of with severe pear-shaped platyspondyly (flattened spine), osteochondrodysplasia that occurs in neonate. This lethal suspected on antenatal ultrasound examination. Only few variant results from the inheritance of an autosomal recessive cases of fibrochondrogenesis are diagnosed before the gene and causes abnormal development of cartilage and termination of pregnancy.[1] This case gives a comprehensive fibrous connective tissues. -
Blomstrand's Lethal Chondrodysplasia: Two Enchondromatosis
Blomstrand’s lethal chondrodysplasia Authors: Doctor Caroline Silve1 and Doctor Harald Jüppner2 Creation Date: January 2005 Scientific Editor: Doctor Valérie Cormier-Daire 1INSERM U. 426, Faculté de Médecine Xavier Bichat, 16 rue Henri Huchard, 75018 Paris, France; 2Endocrine Unit, Department of Medicine, and Pediatric Nephrology unit, MassGeneral Hospital for Children, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA. [email protected] Abstract Keywords Disease name/Synonyms Definition/Diagnostic methods Clinical features Radiologic and histologic analysis of the skeleton Pathogenesis Molecular genetics Genetics/Prevalence Genetic counseling Antenatal diagnosis Treatment References Abstract Blomstrand’s lethal chondrodysplasia (BLC) (OMIM215045) is a rare recessive human disorder characterized by early lethality, advanced bone maturation and accelerated chondrocyte differentiation. Infants with BLC are typically born prematurely and die shortly after birth. They present a severe dysmorphic syndrome characterized by extremely short limbs. Radiologic studies reveal pronounced hyperdensity of the entire skeleton and markedly advanced ossification. Diagnosis can be made as early as 12-13 gestational weeks by transvaginal ultrasound. BLC is associated with loss-of-function mutation in the gene encoding the PTH/PTHrP receptor (PTHR1). Keywords chondrodysplasia, advanced endochondral bone maturation, lethal, PTHR1 gene Disease name/Synonyms Clinical features Blomstrand’s lethal chondrodysplasia -
Discover Dysplasias Gene Panel
Discover Dysplasias Gene Panel Discover Dysplasias tests 109 genes associated with skeletal dysplasias. This list is gathered from various sources, is not designed to be comprehensive, and is provided for reference only. This list is not medical advice and should not be used to make any diagnosis. Refer to lab reports in connection with potential diagnoses. Some genes below may also be associated with non-skeletal dysplasia disorders; those non-skeletal dysplasia disorders are not included on this list. Skeletal Disorders Tested Gene Condition(s) Inheritance ACP5 Spondyloenchondrodysplasia with immune dysregulation (SED) AR ADAMTS10 Weill-Marchesani syndrome (WMS) AR AGPS Rhizomelic chondrodysplasia punctata type 3 (RCDP) AR ALPL Hypophosphatasia AD/AR ANKH Craniometaphyseal dysplasia (CMD) AD Mucopolysaccharidosis type VI (MPS VI), also known as Maroteaux-Lamy ARSB syndrome AR ARSE Chondrodysplasia punctata XLR Spondyloepimetaphyseal dysplasia with joint laxity type 1 (SEMDJL1) B3GALT6 Ehlers-Danlos syndrome progeroid type 2 (EDSP2) AR Multiple joint dislocations, short stature and craniofacial dysmorphism with B3GAT3 or without congenital heart defects (JDSCD) AR Spondyloepimetaphyseal dysplasia (SEMD) Thoracic aortic aneurysm and dissection (TADD), with or without additional BGN features, also known as Meester-Loeys syndrome XL Short stature, facial dysmorphism, and skeletal anomalies with or without BMP2 cardiac anomalies AD Acromesomelic dysplasia AR Brachydactyly type A2 AD BMPR1B Brachydactyly type A1 AD Desbuquois dysplasia CANT1 Multiple epiphyseal dysplasia (MED) AR CDC45 Meier-Gorlin syndrome AR This list is gathered from various sources, is not designed to be comprehensive, and is provided for reference only. This list is not medical advice and should not be used to make any diagnosis. -
Boomerang Dysplasia in a Chinese Female Fetus
HK J Paediatr (new series) 2006;11:324-326 Boomerang Dysplasia in a Chinese Female Fetus ACF LAM, SJ HU, TMF TONG, STS LAM Abstract Boomerang dysplasia (BD) was first described by Kozlowski et al in 1981; and is a form of neonatally lethal chondrodysplasia. The name itself vividly described its characteristic radiographic features, and the importance of recognising these features has major implication in genetic counselling. All, except two reported cases of BD were males. We here reported the third female case of Boomerang dysplasia in literature. Key words Boomerang dysplasia; FLNB gene; Skeletal dysplasia Introduction sporadic and the incidence of BD was estimated to be 1/1,222,698 live born infants.4 Boomerang dysplasia (BD) is a very rare perinatally Autosomal recessive spondylocarpotarsal syndrome, lethal skeletal dysplasia that was first reported by Kozlowski atelosteogenesis type I and III, dominant form Larsen et al in 1981,1 and is characterised by decreased ossification syndrome, and BD formed a spectrum of skeletal dysplasia of cranium and vertebral bodies, incomplete or absent with overlapping clinical phenotypes (Table 1). They shared ossification of long bones that are characteristically curved a common pathogenesis in vertebral segmentation, joint to give this condition its name. Vertebral ossification defect formation and endochondral ossification.5 In 2004, Krakow is most commonly found in the thoracic region, giving the et al5 identified mutations in the Filamin B (FLNB) gene in appearance of "hour glass' with associated wavy ribs. the first four conditions. In July 2005, Bicknell et al6 Histologically, it is characterised by the presence of reported FLNB gene mutations in two unrelated patients multinucleated giant chondrocytes in resting cartilage. -
Developmental Dental Disorders
Developmental Disturbances in Tooth Formaton: Special Needs John J. Sauk DDS, MS Dean & Professor University of Louisville Interprofessional Collaboration &Care First Look! Signaling in Tooth Development Stages of Tooth Development Developmental Disturbances in Tooth Formaton Some genes affecting early tooth development (MSX1, AXIN2,PAX9, LTBP3,EDA) are associated with tooth agenesis and systemic features (cleft palate, colorectal cancer). By contrast, genes involved in enamel (AMELX, ENAM, MMP20, and KLK4) and dentin (DSPP) structures are highly specific for tooth formation. Genes Associated with Tooth Agenesis Non-syndromic oligodontia Mutations in the homeobox gene Oligodontia with mutations MSX1 lead to specific in MSX1 (4p16.1) hypo/oligodontia. Second premolars and third molars are the most Oligodontia with mutations commonly affected teeth in PAX 9 (14q12–q13) Mutations in the transcription factor gene, PAX9, lead to absence of most Oligodontia with mutations permanent molars with or without in AXIN 2 (17q23–24) hypodontia in primary teeth. Mutations in AXIN2 cause tooth Oligodontia with locus agenesis and colorectal cancer mapped to chromosome (OMIM 608615). The patients who 10q11.2 carry the mutation lack 8–27 permanent teeth. Penetrance of colorectal cancer is very high. MSX1 (4p16.1) Congenital agenesis of second premolars at the lower jaw orthopantomogram. Mutations in AXIN2 cause familial tooth agenesis and predispose to colorectal cancer Severe permanent tooth agenesis (oligodontia) Colorectal neoplasia Dominant inheritance Nonsense mutation Arg656Stop, in the Wnt- signaling regulator AXIN2 Mutations in AXIN2 cause familial tooth agenesis and predispose to colorectal cancer Lammi L et al. Am. J. Human Genet. 74 (2004) pp. 1043-1050. Hypodontia as a risk marker for epithelial ovarian cancer Leigh A. -
Skeletal Dysplasias Precision Panel Overview Indications
Skeletal Dysplasias Precision Panel Overview Skeletal Dysplasias, also known as osteochondrodysplasias, are a clinically and phenotypically heterogeneous group of more than 450 inherited disorders characterized by abnormalities mainly of cartilage and bone growth although they can also affect muscle, tendons and ligaments, resulting in abnormal shape and size of the skeleton and disproportion of long bones, spine and head. They differ in natural histories, prognoses, inheritance patterns and physiopathologic mechanisms. They range in severity from those that are embryonically lethal to those with minimum morbidity. Approximately 5% of children with congenital birth defects have skeletal dysplasias. Until recently, the diagnosis of skeletal dysplasia relied almost exclusively on careful phenotyping, however, the advent of genomic tests has the potential to make a more accurate and definite diagnosis based on the suspected clinical diagnosis. The 4 most common skeletal dysplasias are thanatophoric dysplasia, achondroplasia, osteogenesis imperfecta and achondrogenesis. The inheritance pattern of skeletal dysplasias is variable and includes autosomal dominant, recessive and X-linked. The Igenomix Skeletal Dysplasias Precision Panel can be used to make a directed and accurate differential diagnosis of skeletal abnormalities ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum -
Whole Exome Sequencing Gene Package Skeletal Dysplasia, Version 2.1, 31-1-2020
Whole Exome Sequencing Gene package Skeletal Dysplasia, Version 2.1, 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 ABCC9 Atrial fibrillation, familial, 12, 614050 601439 65 100 100 95 Cardiomyopathy, dilated, 1O, 608569 Hypertrichotic osteochondrodysplasia, 239850 ACAN Short stature and advanced bone age, with or without early-onset osteoarthritis -
Subbarao K Skeletal Dysplasia (Sclerosing Dysplasias – Part I)
REVIEW ARTICLE Skeletal Dysplasia (Sclerosing dysplasias – Part I) Subbarao K Padmasri Awardee Prof. Dr. Kakarla Subbarao, Hyderabad, India Introduction Dysplasia is a disturbance in the structure of Monitoring germ cell Mutations using bone and disturbance in growth intrinsic to skeletal dysplasias incidence of dysplasia is bone and / or cartilage. Several terms have 1500 for 9.5 million births (15 per 1,00,000) been used to describe Skeletal Dysplasia. Skeletal dysplasias constitute a complex SCLEROSING DYSPLASIAS group of bone and cartilage disorders. Three main groups have been reported. The first Osteopetrosis one is thought to be x-linked disorder Pyknodysostosis genetically inherited either as dominant or Osteopoikilosis recessive trait. The second group is Osteopathia striata spontaneous mutation. Third includes Dysosteosclerosis exposure to toxic or infective agent Worth’s sclerosteosis disrupting normal skeletal development. Van buchem’s dysplasia Camurati Engelman’s dysplasia The term skeletal dysplasia is sometimes Ribbing’s dysplasia used to include conditions which are not Pyle’s metaphyseal dysplasia actually skeletal dysplasia. According to Melorheosteosis revised classification of the constitutional Osteoectasia with hyperphosphatasia disorders of bone these conditions are Pachydermoperiosteosis (Touraine- divided into two broad groups: the Solente-Gole Syndrome) osteochondrodysplasias and the dysostoses. There are more than 450 well documented Evaluation by skeletal survey including long skeletal dysplasias. Many of the skeletal bones thoracic cage, hands, feet, cranium and dysplasias can be diagnosed in utero. This pelvis is adequate. Sclerosing dysplasias paper deals with post natal skeletal are described according to site of affliction dysplasias, particularly Sclerosing epiphyseal, metaphyseal, diaphyseal and dysplasias. generalized. Dysplasias with increased bone density Osteopetrosis (Marble Bones): Three forms are reported.