DOCSLIB.ORG

Revised Nomenclature and Classification of Inherited Ichthyoses

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Revised Nomenclature and Classification of Inherited Ichthyoses SPECIAL REPORT Revised nomenclature and classification of inherited ichthyoses: Results of the First Ichthyosis Consensus Conference in Sore`ze 2009 Vinzenz Oji, MD,a Gianluca Tadini, MD,b Masashi Akiyama, MD, PhD,c Claudine Blanchet Bardon, MD,d Christine Bodemer, MD, PhD,e Emmanuelle Bourrat, MD,d Philippe Coudiere, PharmD,f John J. DiGiovanna, MD,g Peter Elias, MD,h Judith Fischer, MD, PhD,i Philip Fleckman, MD,j Michal Gina, MD,k John Harper, MD, FCRCP, FRCPCH,l TakashiHashimoto,MD,m Ingrid Hausser, PhD,n Hans Christian Hennies, PhD,o Daniel Hohl, MD, PhD,k Alain Hovnanian, MD, PhD,p,q AkemiIshida-Yamamoto,MD,PhD,r WitoldK.Jacyk,MD,s Sancy Leachman, MD, PhD,t Irene Leigh, MD, FRCP, FMedSci,u Juliette Mazereeuw-Hautier, MD, PhD,v Leonard Milstone, MD,w Fanny Morice-Picard, MD,x AmyS.Paller,MS,MD,y Gabriele Richard, MD, FACMG,z Matthias Schmuth, MD,aa,bb HiroshiShimizu,MD,PhD,c EliSprecher,MD,PhD,cc Maurice Van Steensel, MD, PhD,dd Alain Taı¨eb, MD,x Jorge R. Toro, MD,ee Pierre Vabres, MD,ff Anders Vahlquist, MD, PhD,gg Mary Williams, MD,aa and Heiko Traupe, MDa Mu¨nster, Heidelberg, and Cologne, Germany; Milano, Italy; Sapporo, Fukuoka, and Asahikawa, Japan; Paris, Lavaur, Evry, Toulouse, Bordeaux, and Dijon, France; Providence, Rhode Island; San Francisco, California; Seattle, Washington; Lausanne, Switzerland; London, United Kingdom; Pretoria, South Africa; Salt Lake City, Utah; New Haven, Connecticut; Chicago, Illinois; Gaithersburg and Rockville, Maryland; Innsbruck, Austria; Tel Aviv, Israel; Maastricht, The Netherlands; and Uppsala, Sweden Background: Inherited ichthyoses belong to a large, clinically and etiologically heterogeneous group of mendelian disorders of cornification, typically involving the entire integument. Over the recent years, much From the Department of Dermatology, University Hospital Mu¨n- Dermatology, National Reference Center for Rare Skin Diseases, stera; Centro Malattie Cutanee Ereditarie, Istituto di Scienze Hoˆpital St Andre´, Bordeauxx; Departments of Dermatology and Dermatologiche, Istituto Di Ricovero e Cura a Carattere Pediatrics, Northwestern University Feinberg School of Medi- Scientifico Ospedale Maggiore, Milanob; Department of Der- cine, Chicagoy; GeneDx, Gaithersburgz; University of California matology, Hokkaido University Graduate School of Medicine, San Franciscoaa; Department of Dermatology, Innsbruck Med- Sapporoc; Department of Dermatology, Saint-Louis Hospital, ical Universitybb; Department of Dermatology, Tel Aviv Soura- Parisd; Department of Dermatology, Necker Enfants Malades sky Medical Centercc; Department of Dermatology, Maastricht Hospital (Assistance Publique Hopitaux de Paris [APHP])eUni- University Medical Center and GROW Research School for versity Paris V, National Reference Centre for Genodermatoseis Oncology and Developmental Biology, University of Maas- Centre de reference sur les Maladies Ge´ne´tiques a` Expression trichtdd; Genetics Epidemiology Branch, Division of Cancer Cutane´ee; Pierre Fabre Dermatologie, Lavaurf; Division of Epidemiology and Genetics, National Cancer Institute, Rock- Dermatopharmacology, Department of Dermatology, The War- villeee; Universite´ de Bourgogne, Department of Dermatology, ren Alpert School of Medicine of Brown University, Providenceg; Hoˆpital du Bocage, Dijonff; and Department of Medical Sci- Dermatology, Department of Veterans Affairs Medical Center, ences, Dermatology and Venereology, Uppsala University.gg San Franciscoh; Centre National de Ge´notypage, Evryi; Division The accommodation and travel costs of the participants and the of Dermatology, University of Washingtonj; Hospices Canto- conference rooms of the Ichthyosis Consensus Conference nauxeCentre Hospitalier, Universitaire Vaudois, Service de were sponsored by the Laboratories Pierre Fabre, Castres, Dermatologie des Hospices, Lausannek; Great Ormond Street France. Moreover, our work is supported by the Network for Children’s Hospital, Londonl; Department of Dermatology, Ichthyoses and Related Keratinization Disorders (Bundesminis- Kurume University School of Medicine, Fukuokam; Department terium fu¨r Bildung und Forschung, GFGM01143901), the Foun- of Dermatology, University Hospital Heidelbergn; Cologne dation for Ichthyosis and Related Skin Types (United States), Center for Genomics, Division of Dermatogenetics, University and the Ichthyosis Patient Organization of Germany (Selbsthilfe of Cologneo; Departments of Genetics and Dermatology, Ichthyose e. V.). Necker Enfants Malades Hospital (APHP)eUniversity Paris Vp; Conflicts of interest: None declared. Institut national de la sante´ et de la recherche me´dicale U781q; Accepted for publication November 17, 2009. Department of Dermatology, Asahikawa Medical Colleger; De- Reprint requests: Vinzenz Oji, MD, Department of Dermatology, partment of Dermatology, University of Pretorias; University of University Hospital Mu¨nster, Von-Esmarch-Str. 58, 48149 Utah Health Sciences Centert; Queen Mary and Westfield Mu¨nster, Germany. E-mail: [email protected]. College, Centre for Cutaneous Research, Institute of Cell and Published online July 20, 2010. Molecular Science, Barts and the London Medical School Queen 0190-9622/$36.00 Maryu; Reference Center for Rare Skin Diseases, Department ª 2010 by the American Academy of Dermatology, Inc. of Dermatology, Purpan Hospital, Toulousev; Yale University, doi:10.1016/j.jaad.2009.11.020 New Havenw; Department of Dermatology and Pediatric 607 608 Oji et al JAM ACAD DERMATOL OCTOBER 2010 progress has been made defining their molecular causes. However, there is no internationally accepted classification and terminology. Objective: We sought to establish a consensus for the nomenclature and classification of inherited ichthyoses. Methods: The classification project started at the First World Conference on Ichthyosis in 2007. A large international network of expert clinicians, skin pathologists, and geneticists entertained an interactive dialogue over 2 years, eventually leading to the First Ichthyosis Consensus Conference held in Sore`ze, France, on January 23 and 24, 2009, where subcommittees on different issues proposed terminology that was debated until consensus was reached. Results: It was agreed that currently the nosology should remain clinically based. ‘‘Syndromic’’ versus ‘‘nonsyndromic’’ forms provide a useful major subdivision. Several clinical terms and controversial disease names have been redefined: eg, the group caused by keratin mutations is referred to by the umbrella term, ‘‘keratinopathic ichthyosis’’eunder which are included epidermolytic ichthyosis, superficial epidermolytic ichthyosis, and ichthyosis Curth-Macklin. ‘‘Autosomal recessive congenital ichthyosis’’ is proposed as an umbrella term for the harlequin ichthyosis, lamellar ichthyosis, and the congenital ichthyosiform erythroderma group. Limitations: As more becomes known about these diseases in the future, modifications will be needed. Conclusion: We have achieved an international consensus for the classification of inherited ichthyosis that should be useful for all clinicians and can serve as reference point for future research. ( J Am Acad Dermatol 2010;63:607-41.) Key words: autosomal recessive congenital ichthyosis; epidermolytic ichthyosis; genetics; histology; keratinopathic ichthyosis; mendelian disorders of cornification; superficial epidermolytic ichthyosis; ultrastructure. The ichthyoses form part of a large, clinically and etiologically heterogeneous group of mendelian Abbreviations used: disorders of cornification (MEDOC) and typically ARCI: autosomal recessive congenital 1-3 ichthyosis involve all or most of the integument. During the CDPX2: chondrodysplasia punctata type 2 past few years, much progress has been made in CIE: congenital ichthyosiform erythroderma defining the molecular basis of these disorders, and EI: epidermolytic ichthyosis 4-11 EKV: erythrokeratodermia variabilis in establishing genotype-phenotype correlations. EM: electron microscopy However, there is no universally accepted terminol- HI: harlequin ichthyosis ogy and classification of the diseases considered IV: ichthyosis vulgaris KPI: keratinopathic ichthyosis under the umbrella term ‘‘ichthyosis.’’ Classification LB: lamellar body schemes and terminology continue to vary greatly LI: lamellar ichthyosis among European, North American, and Asian coun- MEDOC: mendelian disorders of cornification NS: Netherton syndrome tries. For example, the same entity may be referred to PPK: palmoplantar keratoderma as epidermolytic hyperkeratosis, bullous congenital RXLI: recessive X-linked ichthyosis ichthyosiform erythroderma (CIE), or bullous ich- SC: stratum corneum 9 SG: stratum granulosum thyosis, depending on where it is diagnosed. TGase: transglutaminase Therefore, a new consensus project was initiated at TTD: trichothiodystrophy the First World Conference on Ichthyosis 2007 in Mu¨nster, Germany (http://www.netzwerk-ichthyose. de/fileadmin/nirk/uploads/Program.pdf). The subse- Subcommittees were formed to address controver- quent process of correspondence involved more than sial issues including both terminology and nosology. 37 dermatologists, skin pathologists, biologists, and The consensus achieved is presented in Tables I to geneticists active in the field of ichthyoses. The III. Tables IV to XII summarize the clinical and discussions led to the 2009 Ichthyosis Consensus morphologic findings of the inherited ichthyoses. Conference on the terminology and classification of Importantly, the clinical classification developed inherited
Load more

Recommended publications
  • Neonatal Dermatology Review
    NEONATAL Advanced Desert DERMATOLOGY Dermatology Jennifer Peterson Kevin Svancara Jonathan Bellew DISCLOSURES No relevant financial relationships to disclose Off-label use of acitretin in ichthyoses will be discussed PHYSIOLOGIC Vernix caseosa . Creamy biofilm . Present at birth . Opsonizing, antibacterial, antifungal, antiparasitic activity Cutis marmorata . Reticular, blanchable vascular mottling on extremities > trunk/face . Response to cold . Disappears on re-warming . Associations (if persistent) . Down syndrome . Trisomy 18 . Cornelia de Lange syndrome PHYSIOLOGIC Milia . Hard palate – Bohn’s nodules . Oral mucosa – Epstein pearls . Associations . Bazex-Dupre-Christol syndrome (XLD) . BCCs, follicular atrophoderma, hypohidrosis, hypotrichosis . Rombo syndrome . BCCs, vermiculate atrophoderma, trichoepitheliomas . Oro-facial-digital syndrome (type 1, XLD) . Basal cell nevus (Gorlin) syndrome . Brooke-Spiegler syndrome . Pachyonychia congenita type II (Jackson-Lawler) . Atrichia with papular lesions . Down syndrome . Secondary . Porphyria cutanea tarda . Epidermolysis bullosa TRANSIENT, NON-INFECTIOUS Transient neonatal pustular melanosis . Birth . Pustules hyperpigmented macules with collarette of scale . Resolve within 4 weeks . Neutrophils Erythema toxicum neonatorum . Full term . 24-48 hours . Erythematous macules, papules, pustules, wheals . Eosinophils Neonatal acne (neonatal cephalic pustulosis) . First 30 days . Malassezia globosa & sympoidalis overgrowth TRANSIENT, NON-INFECTIOUS Miliaria . First weeks . Eccrine
    [Show full text]
  • Ectodermal Dysplasias: a New Clinical-Genetic Classification
    J Med Genet 2001;38:579–585 579 Ectodermal dysplasias: a new clinical-genetic J Med Genet: first published as 10.1136/jmg.38.9.579 on 1 September 2001. Downloaded from classification Manuela Priolo, Carmelo Laganà Abstract many case reports and personal communica- The ectodermal dysplasias (EDs) are a tions in their listing of EDs, as well as large and complex nosological group of conditions traditionally classified under other diseases, first described by Thurnam in headings, for example dyskeratosis congenita11 1848. In the last 10 years more than 170 and keratitis-ichthyosis-deafness (KID) syn- diVerent pathological clinical conditions drome12 (poikiloderma and immune defect have been recognised and defined as EDs, diseases and erythrokeratodermas, respec- all sharing in common anomalies of the tively). Further, they did not appear to hair, teeth, nails, and sweat glands. Many consider variability of expression and may are associated with anomalies in other have reported, as distinct diseases, conditions organs and systems and, in some condi- that reflect variable expression of the same tions, with mental retardation. pathological entity. Moreover, they included The anomalies aVecting the epidermis pathological conditions which, in our opinion, and epidermal appendages are extremely do not strictly fulfil the diagnostic criteria for variable and clinical overlap is present EDs, such as conditions with secondary among the majority of EDs. Most EDs are involvement of epidermal derivatives rather defined by particular clinical signs (for than a primary defect. We abandoned the 1-2- example, eyelid adhesion in AEC syn- 3-4 designation of EDs, because we believe drome, ectrodactyly in EEC).
    [Show full text]
  • Bilateral Lower Extremity Hyperkeratotic Plaques: a Case Report of Ichthyosis Vulgaris
    Faculty & Staff Scholarship 2015 Bilateral lower extremity hyperkeratotic plaques: a case report of ichthyosis vulgaris Hayley Leight Zachary Zinn Omid Jalali Follow this and additional works at: https://researchrepository.wvu.edu/faculty_publications Clinical, Cosmetic and Investigational Dermatology Dovepress open access to scientific and medical research Open Access Full Text Article CASE REPORT Bilateral lower extremity hyperkeratotic plaques: a case report of ichthyosis vulgaris Hayley Leight Abstract: Here, we report a case of a middle-aged woman presenting with severe, long-standing, Zachary Zinn hyperkeratotic plaques of the lower extremities unrelieved by over-the-counter medications. Omid Jalali Initial history and clinical findings were suggestive of an inherited ichthyosis. Ichthyoses are genetic disorders characterized by dry scaly skin and altered skin-barrier function. A diagnosis Department of Dermatology, West Virginia University, of ichthyosis vulgaris was confirmed by histopathology. Etiology, prevalence, and treatment Morgantown, WV, USA options are discussed. Keywords: filaggrin gene, FLG, profilaggrin, keratohyalin granules, hyperkeratosis Introduction For personal use only. Inherited ichthyoses are a diverse group of genetic disorders characterized by dry, scaly skin; hyperkeratosis; and altered skin-barrier function. While these disorders of cutaneous keratinization are multifaceted and varying in etiology, disruption in the stratum corneum with generalized scaling is common to all.1–4 Although not entirely known
    [Show full text]
  • EXTENDED CARRIER SCREENING Peace of Mind for Planned Pregnancies
    Focusing on Personalised Medicine EXTENDED CARRIER SCREENING Peace of Mind for Planned Pregnancies Extended carrier screening is an important tool for prospective parents to help them determine their risk of having a child affected with a heritable disease. In many cases, parents aren’t aware they are carriers and have no family history due to the rarity of some diseases in the general population. What is covered by the screening? Genomics For Life offers a comprehensive Extended Carrier Screening test, providing prospective parents with the information they require when planning their pregnancy. Extended Carrier Screening has been shown to detect carriers who would not have been considered candidates for traditional risk- based screening. With a simple mouth swab collection, we are able to test for over 419 genes associated with inherited diseases, including Fragile X Syndrome, Cystic Fibrosis and Spinal Muscular Atrophy. The assay has been developed in conjunction with clinical molecular geneticists, and includes genes listed in the NIH Genetic Test Registry. For a list of genes and disorders covered, please see the reverse of this brochure. If your gene of interest is not covered on our Extended Carrier Screening panel, please contact our friendly team to assist you in finding a gene test panel that suits your needs. Why have Extended Carrier Screening? Extended Carrier Screening prior to pregnancy enables couples to learn about their reproductive risk and consider a complete range of reproductive options, including whether or not to become pregnant, whether to use advanced reproductive technologies, such as preimplantation genetic diagnosis, or to use donor gametes.
    [Show full text]
  • Graft Versus Host Disease and How to Report It
    Graft versus Host Disease and how to report it Daniel Weisdorf MD University of Minnesota Transplant Events Day-8 0 1mo 3mo 6mo Conditioning HSCT Engraftment Mucositis Organ toxicity (VOD) Acute GVHD Chronic GVHD Infections Bacterial ----CMV---- Varicella----- --Fungus--------- Transplant Events Day-8 0 1mo 3mo 6mo Conditioning HSCT Engraftment Mucositis Organ toxicity (VOD) Acute GVHD Chronic GVHD Infections Bacterial ----CMV---- Varicella----- --Fungus--------- 1 Acute GVHD Chronic GVHD Skin: Lichen planus, Hyper/ hypo pigmentation, Dermatitis ichthyosis, onychodystrophy, morphea, + scleroderma, hair changes. Hepatitis Oral: sicca, atrophy, lichenoid, + Hyperkeratosis GI: wasting, dysphagia, Enteritis odynophagia, strictures Eye: keratoconjunctivitis sicca Lungs: Bronchiolitis obliterans Others: myofascial, genital Acute GVHD Chronic GVHD Dermatitis Rash + Hepatitis High bilirubin + Enteritis Nausea/vomiting/ diarrhea Acute GVHD Chronic GVHD Skin: Lichen planus, Scaly abnormal pigmentation, Dry skin, onychodystrophy, abnormal nails scleroderma, thick skin hair changes. Oral: sicca, atrophy, lichenoid, Dry mouth GI: wasting, dysphagia, Weight loss odynophagia, trouble swallowing Eye: keratoconjunctivitis sicca Dry eyes Lungs: Bronchiolitis obliterans Obstruction Others: myofascial, muscle stiffness Genital vaginal narrowing 2 Graft vs. Leukemia Effect • Less leukemia relapse follows more GVHD • Acute and particularly Chronic GVHD limit relapse Risk Factors for GVHD Acute GVHD Chronic GVHD Increased risk Increased risk HLA mismatch Older
    [Show full text]
  • Harlequin Ichthyosis
    orphananesthesia Anaesthesia recommendations for patients suffering from Harlequin ichthyosis Disease name: Harlequin ichthyosis ICD 10: Q80.4 Synonyms: Harlequin baby, ichthyosis congenita, Ichthyosis fetalis, keratosis diffusa fetalis, Harlequin fetus, Ichthyosis congenita gravior Disease summary: Harlequin ichthyosis (HI) is an autosomal recessive congenital ichthyosis. HI is an extremely rare and most severe form of ichthyosis. The condition is caused by mutation of the ABCA12 gene resulting in impaired lipid transport in the outermost layer of the skin, the epidermis. During the neontatal period, harlequin ichthyosis manifests phenotypically as dramatic large polygonal plate-like scaling of the skin that cracks and can slough, revealing the underlying diffusely bright red skin. These thick skin plates can pull and distort facial features. The tightness of the skin can also pull on the eyes and mouth resulting in difficulties with closing these structures. The tightness also causes the eyes and the mouth to turn inside out resulting in ectropion and eclabium. Other features include hypoplasia of the fingers, malformation of the ears and nose, and alopecia. Affected neonates often do not survive and mortality is commonly attributed to respiratory failure and/or sepsis. Clinical data obtained from 45 HI patients revealed 25 survivors and 20 deaths with an overall survival rate of only 56%. The ages of survivors ranged from 10 months to 25 years and death usually occurred in the first 3 months. HI infants need to be cared for in a neonatal intensive care unit immediately after birth. Several harlequin neonates have survived. They tend to have severe erythroderma and fine scaling, even with optimal management.
    [Show full text]
  • Erythrokeratodermia Variabilis Et Progressiva Allelic to Oculo-Dento
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector COMMENTARY See related article on pg 1540 translocated into the plasma membrane. Once expressed on the cell surface, the hemichannel docks with a connexon of an adjacent cell to form a channel that Erythrokeratodermia Variabilis et is termed gap junction. Connexons can form either homotypic (docking of two Progressiva Allelic to Oculo-Dento- identical connexons), heterotypic (docking of two dissimilar homomeric Digital Dysplasia connexons), or heteromeric (docking of two heteromeric connexons) channels Sabine Duchatelet1,2 and Alain Hovnanian1,2,3 (Mese et al., 2007). These diverse Erythrokeratodermia variabilis et progressiva (EKVP) is a genodermatosis with combinations of connexins create clinical and genetic heterogeneity, most often transmitted in an autosomal different types of channels, each having dominant manner, caused by mutations in GJB3 and GJB4 genes encoding unique properties (ionic conductance, connexins (Cx)31 and 30.3, respectively. In this issue, Boyden et al. (2015) report permeability, sensitivity to voltage, or for the first time de novo dominant mutations in GJA1 encoding the ubiquitous pH). Of note, several connexins may also Cx43 in patients with EKVP. These results expand the genetic heterogeneity of form functional nonjunctional hemi- EKVP and the human disease phenotypes associated with GJA1 mutations. They channels, although their physiological disclose that EKVP is allelic to oculo-dento-digital dysplasia, a rare syndrome relevance remains uncertain (Pfenniger previously known to be caused by dominant GJA1 mutations. et al., 2010). Mutations in 11 connexin genes cause a variety of genetic dis- Journal of Investigative Dermatology (2015) 135, 1475–1478.
    [Show full text]
  • COVID-19 and RARE SKIN DISEASES
    COVID-19 and RARE SKIN DISEASES Newsletter n°4, 8th June 2021 Dear all, We hope that this letter finds you well! Thank you to those who have included patients and collected the data! We would like to remind you to complete the online eCRF via the link you have received. If you any have any issues don’t hesitate to contact us. Please note that, since the pandemic is still continuing, the study has been expanded for one year. The monitoring is ongoing and the queries will be sent regularly. If needed, the sites will be contacted to discuss and validate the answers, and check if the study is proceeding well. 64 patients are included in the study: 5 in Germany, 6 in Czech Republic, 8 in Italy, 11 in Lithuania and 34 in France. The diseases concerned are the following: Bullous pemphigoid (9/64), Recessive dystrophic Epidermolysis bullosa (9/64), Dominant dystrophic Epidermolysis bullosa (8/64), Epidermolysis bullosa (7/64), Hidradenitis suppurativa (7/64), X-linked hypohidrotic ectodermal dysplasia (4/64), Lamellar ichtyosis (2/64) and Incontinentia pigmenti (2/64). The other diseases are presented each by 1 patient: Pemphigus vulgaris, Pemphigus foliaceous, Mucous membrane pemphigoid, IgA Linear Dermatosis, Dermatitis herpetiformis, Kindler Epidermolysis bullosa, Kerathinopathic ichthyosis, Darier disease, Linear morphea, Cloves syndrome, Microcystic lymphatic malformation, Hemihypertrophy (Overgrowth syndrome), Adamantiades - Behçet's disease, Hailey Hailey disease, Pityriasis rubra pilaris and Neurofibromatosis type 1 (Figure 1 below). 10 Figure 1: Type of Rare skin diseases 5 0 A large majority of patients visited a hospital physician (42%: 27/64), 28% visited a General practitioner (18/64) and 23% consulted a physician remotely (15/64).
    [Show full text]
  • Ichthyosis Hystrix
    Case Report Ichthyosis hystrix Surajit Nayak, Basanti Acharjya, Prasenjit Mohanty Department of Skin ABSTRACT and VD, MKCG Medical College and Hospital, The present report describes the condition in a three day old male child with bilateral ,linear, hyperpigmented and Berhampur, Orissa, India hyperkeratotic verrucous plaques and patchy alopecia over scalpe without any nail and skeletal abnormalities. It was suggestive of ichthyosis hystrix type of epidermal nevus,and is being reported in view of the rarity of this condition. Key words: Icthyosis hystrix, epidermal nevus syndrome, etretinate INTRODUCTION most part of the face. Nails were normal. In the lower limbs, in addition to the nevus, there were Ichthyosis hystrix the nomenclature comes unilateral hyperpigmented [Figure 1] macular from the Greek word and condition was first patches encircling right upper thigh and complete described in England in early 18th century. left thigh, sparing a band-like zone. The term ichthyosis hystrix is used to describe several rare skin disorders in the ichthyosis On physical examination, we could not observe family of skin disorders characterized by massive any defects, especially in skeletal or central hyperkeratosis with an appearance like spiny nervous systems. Routine laboratory examination scales. The term has also been employed to including complete blood count, urine analysis, describe localized and linear warty epidermal nevi liver function test and chest X-ray were all within sometimes associated with mental retardation, normal limits. The parents did not permit a biopsy. seizures or skeletal anomalies. Alopecia and hair and nail abnormalities as well as inner ear Based on the above constellation of clinical deafness were also seen in these patients.
    [Show full text]
  • Abstract Book
    Abstract Book First World Conference on Ichthyosis August 31 – September 2, 2007 Münster, Germany Organized by Network for Ichthyoses and related keratinization disorders (NIRK) together with Selbsthilfe Ichthyose e.V. and EU-Coordination Action GENESKIN Contacts: H. Traupe, Münster, Email: [email protected] B. Willis, Münster, Email: [email protected] Barbara Kleinow, Email: [email protected] Geske Wehr, Email: [email protected] Location: Lecture Hall Location:Department of Dermatology University Hospital Von Esmarch-Str. 58 48149 Münster Germany Friday, August 31, 2007 page Workshop on clinical diversity and diagnostic standardization D. Metze, Münster Histopathology of ichthyoses: Clues for diagnostic standardization ..................................... 19 I. Hausser, Heidelberg Ultrastructural characterization of lamellar ichthyosis: A tool for diagnostic standardization 13 H. Verst, Münster The data base behind the NIRK register: a secure tool for genotype/phenotype analysis 34 V. Oji, Münster Classification of congenital ichthyosis ................................................................................... 20 M. Raghunath, Singapore Congenital Ichthyosis in South East Asia ............................................................................. 25 Keratinization disorders and keratins I. Hausser, Heidelberg Ultrastructure of keratin disorders: What do they have in common? ................................... 12 M. Arin, Köln Recent advances in keratin disorders .................................................................................
    [Show full text]
  • 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.
    [Show full text]
  • Blueprint Genetics Ectodermal Dysplasia Panel
    Ectodermal Dysplasia Panel Test code: DE0401 Is a 25 gene panel that includes assessment of non-coding variants. Is ideal for patients with a clinical suspicion of ectodermal dysplasia (hidrotic or hypohidrotic) or Ellis-van Creveld syndrome. About Ectodermal Dysplasia Ectodermal Dysplasia (ED) is a group of closely related conditions of which more than 150 different syndromes have been identified. EDs affects the development or function of teeth, hair, nails and sweat glands. ED may present as isolated or as part of a syndromic disease and is commonly subtyped according to sweating ability. The clinical features of the X-linked and autosomal forms of hypohidrotic ectodermal dysplasia (HED) can be indistinguishable and many of the involved genes may lead to phenotypically distinct outcomes depending on number of defective alleles. The most common EDs are hypohidrotic ED and hydrotic ED. X-linked hypohidrotic ectodermal dysplasia (HED) is caused by EDA mutations and explain 75%-95% of familial HED and 50% of sporadic cases. HED is characterized by three cardinal features: hypotrichosis (sparse, slow-growing hair and sparse/missing eyebrows), reduced sweating and hypodontia (absence or small teeth). Reduced sweating poses risk for episodes of hyperthermia. Female carriers may have some degree of hypodontia and mild hypotrichosis. Isolated dental phenotypes have also been described. Mutations in WNT10A have been reported in up to 9% of individuals with HED and in 25% of individuals with HED who do not have defective EDA. Approximately 50% of individuals with heterozygous WNT10A mutation have HED and the most consistent clinical feature is severe oligodontia of permanent teeth.
    [Show full text]