Cardiomyopathy Precision Panel Overview Indications
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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. -
Assembly and Maintenance of Sarcomere Thin Filaments and Associated Diseases
International Journal of Molecular Sciences Review Assembly and Maintenance of Sarcomere Thin Filaments and Associated Diseases Kendal Prill and John F. Dawson * Centre for Cardiovascular Investigations, Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; [email protected] * Correspondence: [email protected] Received: 17 December 2019; Accepted: 12 January 2020; Published: 15 January 2020 Abstract: Sarcomere assembly and maintenance are essential physiological processes required for cardiac and skeletal muscle function and organism mobility. Over decades of research, components of the sarcomere and factors involved in the formation and maintenance of this contractile unit have been identified. Although we have a general understanding of sarcomere assembly and maintenance, much less is known about the development of the thin filaments and associated factors within the sarcomere. In the last decade, advancements in medical intervention and genome sequencing have uncovered patients with novel mutations in sarcomere thin filaments. Pairing this sequencing with reverse genetics and the ability to generate patient avatars in model organisms has begun to deepen our understanding of sarcomere thin filament development. In this review, we provide a summary of recent findings regarding sarcomere assembly, maintenance, and disease with respect to thin filaments, building on the previous knowledge in the field. We highlight debated and unknown areas within these processes to clearly define open research questions. Keywords: sarcomere assembly; sarcomere maintenance; sarcomere thin filaments; thin filament assembly; thin filament maintenance; thin filament turnover; actin turnover; chaperone; sarcomere; myopathy 1. Introduction Striated muscle requires the coordination of hundreds of proteins not only for cellular function but also for assembly of the contractile sarcomere units within the myofibril. -
Segmental Overvekst Og Vaskulærmalformasjoner V02
2/1/2021 Segmental overvekst og vaskulærmalformasjoner v02 Avdeling for medisinsk genetikk Segmental overvekst og vaskulærmalformasjoner Genpanel, versjon v02 * Enkelte genomiske regioner har lav eller ingen sekvensdekning ved eksomsekvensering. Dette skyldes at de har stor likhet med andre områder i genomet, slik at spesifikk gjenkjennelse av disse områdene og påvisning av varianter i disse områdene, blir vanskelig og upålitelig. Disse genetiske regionene har vi identifisert ved å benytte USCS segmental duplication hvor områder større enn 1 kb og ≥90% likhet med andre regioner i genomet, gjenkjennes (https://genome.ucsc.edu). Vi gjør oppmerksom på at ved identifiseringav ekson oppstrøms for startkodon kan eksonnummereringen endres uten at transkript ID endres. Avdelingens websider har en full oversikt over områder som er affisert av segmentale duplikasjoner. ** Transkriptets kodende ekson. Ekson Gen Gen affisert (HGNC (HGNC Transkript Ekson** Fenotype av symbol) ID) segdup* ACVRL1 175 NM_000020.3 2-10 Telangiectasia, hereditary hemorrhagic, type 2 OMIM ADAMTS3 219 NM_014243.3 1-22 Hennekam lymphangiectasia- lymphedema syndrome 3 OMIM AKT1 391 NM_005163.2 2-14 Cowden syndrome 6 OMIM Proteus syndrome, somatic OMIM AKT2 392 NM_001626.6 2-14 Diabetes mellitus, type II OMIM Hypoinsulinemic hypoglycemia with hemihypertrophy OMIM AKT3 393 NM_005465.7 2-14 Megalencephaly-polymicrogyria- polydactyly-hydrocephalus syndrome 2 OMIM file:///data/SegOv_v02-web.html 1/7 2/1/2021 Segmental overvekst og vaskulærmalformasjoner v02 Ekson Gen Gen affisert (HGNC (HGNC -
Novel Association of Hypertrophic Cardiomyopathy, Sensorineural Deafness, and a Mutation in Unconventional Myosin VI (MYO6)
309 LETTER TO JMG J Med Genet: first published as 10.1136/jmg.2003.011973 on 1 April 2004. Downloaded from Novel association of hypertrophic cardiomyopathy, sensorineural deafness, and a mutation in unconventional myosin VI (MYO6) S A Mohiddin, Z M Ahmed, A J Griffith, D Tripodi, T B Friedman, L Fananapazir, R J Morell ............................................................................................................................... J Med Genet 2004;41:309–314. doi: 10.1136/jmg.2003.011973 amilial hypertrophic cardiomyopathy (FHC) is typically Key points characterised by left ventricular hypertrophy, diastolic Fdysfunction, and hypercontractility, and is often asso- ciated with disabling symptoms, arrhythmias, and sudden N Familial hypertrophic cardiomyopathy (FHC) is typi- death.1 FHC shows both non-allelic and allelic genetic cally confined to a cardiac phenotype and is caused by heterogeneity, and results from any one of more than 100 mutations in genes encoding sarcomeric proteins. mutations in genes encoding sarcomeric proteins.2 Identified Occasionally FHC may be one component of a genes include those encoding b myosin heavy chain, the hereditary multisystem disorder. myosin regulatory and essential light chains, myosin bind- N Sensorineural hearing loss is genetically heteroge- ing protein C, troponin I, troponin C, a cardiac actin, and neous. Mutations in the MYO6 gene, encoding 23 titin. The FHC phenotype is characterised by hypertrophy, unconventional myosin VI, have been found to cause myocyte disarray and fibrosis, and results from the dominant non-syndromic sensorineural hearing loss—that is, negative expression of one of these (mainly missense) sensorineural hearing loss in the absence of any other mutations. The resulting sarcomeric dysfunction leads related clinical features. ultimately, through mechanisms that remain obscure, to pathological left ventricular remodelling. -
Clinical Genetics and the Hutterite Brethren
Clinical Genetics and the Hutterite Brethren: What have we learned in the new millenium? Or: A Micheil Innes MD FRCPC FCCMG Adapted from: Medical Genetics Grand Rounds January 2013 History and Population Hutterite Population Today >40 000 in AB, 30000 MB, ND, SD 1593-1770 1874-1879 25000 Transylvania 1256 migrated to American Prairies 20000 15000 World War I 10000 1565-1592 1770 - 1870 Migration to Canada Moravia5000 Ukraine 0 1500s 1520 1540 1550 1570 1580 1590 1610 1620 1680 1750 1760 1840 1860 1890 1900 1950 1975 1990 Tyrolean Alps Why Identify Genes in this Population? • Direct Benefits to • Benefit to Larger Patients/Families population – Non-invasive – Most of these disorders diagnostic test are not confined to this – Carrier test (*marriage population restrictions) – May allow for diagnosis – ?Prenatal testing of atypical cases – Enhanced understanding of – Expand basic science disease may facilitate and clinical knowledge management or treatment Initial Presentations May be Non-Specific Highlighting Importance of Careful Syndrome Delineation and Early Genetic Diagnosis • Hearing Loss – Autosomal recessive non-syndromic hearing loss (> 2loci) – Usher syndrome (> 2loci) – HDR syndrome • Cerebellar Ataxia – Joubert syndrome – DES syndrome – DCMA syndrome – CASS syndrome • Muscular Dystrophy/ High CK – LGMD2H – LGDM2I – AR EDMD – Myopathy with CPEO – Microcephaly with Chorea Genetic services and the Hutterites Religion/Culture • Has posed little barrier overall • Very accepting of medical care and technology • Although they believe that God plays a day to day role in guiding their lives, most couples accept genetic explanations for their children’s disorders • Some leuts and individual colonies are more conservative than others • Colony leader is clearly the Minister • Who speaks for the overall community when it comes to community wide issues? – e.g. -
Splicing-Correcting Therapeutic Approaches for Retinal Dystrophies: Where Endogenous Gene Regulation and Specificity Matter
New Developments Splicing-Correcting Therapeutic Approaches for Retinal Dystrophies: Where Endogenous Gene Regulation and Specificity Matter Niccolo` Bacchi,1 Simona Casarosa,1,2 and Michela A. Denti1,3 1Centre for Integrative Biology (CIBIO) - University of Trento, Trento, Italy 2Neuroscience Institute - National Research Council (CNR), Pisa, Italy 3Neuroscience Institute - National Research Council (CNR), Padova, Italy Correspondence: Simona Casarosa, Splicing is an important and highly regulated step in gene expression. The ability to modulate Centre for Integrative Biology it can offer a therapeutic option for many genetic disorders. Antisense-mediated splicing- (CIBIO) - University of Trento, Via correction approaches have recently been successfully exploited for some genetic diseases, Sommarive 9, 38123 Trento, Italy; and are currently demonstrating safety and efficacy in different clinical trials. Their [email protected]. application for the treatment of retinal dystrophies could potentially solve a vast panel of Michela A. Denti, Centre for Inte- grative Biology (CIBIO) - University cases, as illustrated by the abundance of mutations that could be targeted and the versatility of ofTrento,ViaSommarive9,38123 the technique. In this review, we will give an insight of the different therapeutic strategies, Trento, Italy; focusing on the current status of their application for retinal dystrophies. [email protected]. Keywords: splicing correction, antisense oligonucleotides, retinal dystrophy, gene therapy SC and MAD contributed equally to the work presented here and should therefore be regarded as equivalent authors. Submitted: April 8, 2014 Accepted: April 11, 2014 Citation: Bacchi N, Casarosa S, Denti MA. Splicing-correcting therapeutic approaches for retinal dystrophies: where endogenous gene regulation and specificity matter. Invest Oph- thalmol Vis Sci. -
Phenotypic and Genotypic Characterisation of Noonan-Like
1of5 ELECTRONIC LETTER J Med Genet: first published as 10.1136/jmg.2004.024091 on 2 February 2005. Downloaded from Phenotypic and genotypic characterisation of Noonan-like/ multiple giant cell lesion syndrome J S Lee, M Tartaglia, B D Gelb, K Fridrich, S Sachs, C A Stratakis, M Muenke, P G Robey, M T Collins, A Slavotinek ............................................................................................................................... J Med Genet 2005;42:e11 (http://www.jmedgenet.com/cgi/content/full/42/2/e11). doi: 10.1136/jmg.2004.024091 oonan-like/multiple giant cell lesion syndrome (NL/ MGCLS; OMIM 163955) is a rare condition1–3 with Key points Nphenotypic overlap with Noonan’s syndrome (OMIM 163950) and cherubism (OMIM 118400) (table 1). N Noonan-like/multiple giant cell lesion syndrome (NL/ Recently, missense mutations in the PTPN11 gene on MGCLS) has clinical similarities with Noonan’s syn- chromosome 12q24.1 have been identified as the cause of drome and cherubism. It is unclear whether it is a Noonan’s syndrome in 45% of familial and sporadic cases,45 distinct entity or a variant of Noonan’s syndrome or indicating genetic heterogeneity within the syndrome. In the cherubism. 5 study by Tartaglia et al, there was a family in which three N Three unrelated patients with NL/MGCLS were char- members had features of Noonan’s syndrome; two of these acterised, two of whom were found to have mutations had incidental mandibular giant cell lesions.3 All three in the PTPN11 gene, the mutation found in 45% of members were found to have a PTPN11 mutation known to patients with Noonan’s syndrome. -
Megalencephaly and Macrocephaly
277 Megalencephaly and Macrocephaly KellenD.Winden,MD,PhD1 Christopher J. Yuskaitis, MD, PhD1 Annapurna Poduri, MD, MPH2 1 Department of Neurology, Boston Children’s Hospital, Boston, Address for correspondence Annapurna Poduri, Epilepsy Genetics Massachusetts Program, Division of Epilepsy and Clinical Electrophysiology, 2 Epilepsy Genetics Program, Division of Epilepsy and Clinical Department of Neurology, Fegan 9, Boston Children’s Hospital, 300 Electrophysiology, Department of Neurology, Boston Children’s Longwood Avenue, Boston, MA 02115 Hospital, Boston, Massachusetts (e-mail: [email protected]). Semin Neurol 2015;35:277–287. Abstract Megalencephaly is a developmental disorder characterized by brain overgrowth secondary to increased size and/or numbers of neurons and glia. These disorders can be divided into metabolic and developmental categories based on their molecular etiologies. Metabolic megalencephalies are mostly caused by genetic defects in cellular metabolism, whereas developmental megalencephalies have recently been shown to be caused by alterations in signaling pathways that regulate neuronal replication, growth, and migration. These disorders often lead to epilepsy, developmental disabilities, and Keywords behavioral problems; specific disorders have associations with overgrowth or abnor- ► megalencephaly malities in other tissues. The molecular underpinnings of many of these disorders are ► hemimegalencephaly now understood, providing insight into how dysregulation of critical pathways leads to ► -
Stockholm University
Stockholm University This is a published version of a paper published in Journal of Molecular Biology. Citation for the published paper: Björklund, Å., Light, S., Sagit, R., Elofsson, A. (2010) "Nebulin: A Study of Protein Repeat Evolution" Journal of Molecular Biology, 402(1): 38-51 URL: http://dx.doi.org/10.1016/j.jmb.2010.07.011 Access to the published version may require subscription. Permanent link to this version: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-50177 http://su.diva-portal.org RGR YJMBI-62434; No. of pages: 14; 4C: 2, 5, 8, 9 doi:10.1016/j.jmb.2010.07.011 J. Mol. Biol. (2010) xx, xxx–xxx Available online at www.sciencedirect.com Nebulin: A Study of Protein Repeat Evolution Åsa K. Björklund, Sara Light†, Rauan Sagit† and Arne Elofsson⁎ Center for Biological Membrane Protein domain repeats are common in proteins that are central to the Research, Stockholm organization of a cell, in particular in eukaryotes. They are known to evolve Bioinformatics Center, through internal tandem duplications. However, the understanding of the Department of Biochemistry and underlying mechanisms is incomplete. To shed light on repeat expansion Biophysics, Stockholm mechanisms, we have studied the evolution of the muscle protein Nebulin, University, Stockholm, Sweden a protein that contains a large number of actin-binding nebulin domains. Nebulin proteins have evolved from an invertebrate precursor containing Received 30 March 2010; two nebulin domains. Repeat regions have expanded through duplications received in revised form of single domains, as well as duplications of a super repeat (SR) consisting 22 June 2010; of seven nebulins. -
2020 Program Book
PROGRAM BOOK Note that TAGC was cancelled and held online with a different schedule and program. This document serves as a record of the original program designed for the in-person meeting. April 22–26, 2020 Gaylord National Resort & Convention Center Metro Washington, DC TABLE OF CONTENTS About the GSA ........................................................................................................................................................ 3 Conference Organizers ...........................................................................................................................................4 General Information ...............................................................................................................................................7 Mobile App ....................................................................................................................................................7 Registration, Badges, and Pre-ordered T-shirts .............................................................................................7 Oral Presenters: Speaker Ready Room - Camellia 4.......................................................................................7 Poster Sessions and Exhibits - Prince George’s Exhibition Hall ......................................................................7 GSA Central - Booth 520 ................................................................................................................................8 Internet Access ..............................................................................................................................................8 -
Neoreviews Quiz
Birthmarks of Potential Medical Significance Jacinto A. Hernández and Joseph G. Morelli NeoReviews 2003;4;263 DOI: 10.1542/neo.4-10-e263 The online version of this article, along with updated information and services, is located on the World Wide Web at: http://neoreviews.aappublications.org/cgi/content/full/neoreviews;4/10/e263 NeoReviews is the official journal of the American Academy of Pediatrics. A monthly publication, it has been published continuously since 2000. NeoReviews is owned, published, and trademarked by the American Academy of Pediatrics, 141 Northwest Point Boulevard, Elk Grove Village, Illinois, 60007. Copyright © 2003 by the American Academy of Pediatrics. All rights reserved. Online ISSN: 1526-9906. Downloaded from http://neoreviews.aappublications.org by J Michael Coleman on August 19, 2010 Article dermatology Birthmarks of Potential Medical Significance Jacinto A. Herna´ndez, Objectives After completing this article, readers should be able to: MD*, Joseph G. Morelli, MD† 1. Describe the clinical manifestations of neurofibromatosis type 1. 2. List conditions associated with cafe´au lait macules. 3. Explain the clinical significance of congenital melanocytic nevi. 4. Characterize tuberous sclerosis complex. 5. List the two syndromes associated with port-wine stains and extracutaneous abnormalities. 6. Categorize and describe the three types of hemangiomas. Introduction Birthmarks are common (ϳ8% to 10%) in newborns. Most birthmarks represent vascular and pigmentary lesions. The natural history of these lesions varies from being transient phenomena and essentially normal variants of no clinical significance to permanent cutaneous abnormalities that may be associated with significant systemic complications or diseases. Table 1 lists some neonatal skin lesions that should be recognized by the clinician as clues to more serious disorders. -
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.