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      Expanding the clinical spectrum of hereditary fibrosing poikiloderma with tendon contractures, myopathy and pulmonary fibrosis due to FAM111B mutations

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      Orphanet Journal of Rare Diseases
      BioMed Central
      Poikiloderma, Myopathy, Contractures, Pulmonary fibrosis, Adiposis

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          Abstract

          Background

          Hereditary Fibrosing Poikiloderma (HFP) with tendon contractures, myopathy and pulmonary fibrosis (POIKTMP [MIM 615704]) is a very recently described entity of syndromic inherited poikiloderma. Previously by using whole exome sequencing in five families, we identified the causative gene, FAM111B (NM_198947.3), the function of which is still unknown. Our objective in this study was to better define the specific features of POIKTMP through a larger series of patients.

          Methods

          Clinical and molecular data of two families and eight independent sporadic cases, including six new cases, were collected.

          Results

          Key features consist of: (i) early-onset poikiloderma, hypotrichosis and hypohidrosis; (ii) multiple contractures, in particular triceps surae muscle contractures; (iii) diffuse progressive muscular weakness; (iv) pulmonary fibrosis in adulthood and (v) other features including exocrine pancreatic insufficiency, liver impairment and growth retardation. Muscle magnetic resonance imaging was informative and showed muscle atrophy and fatty infiltration. Histological examination of skeletal muscle revealed extensive fibroadipose tissue infiltration. Microscopy of the skin showed a scleroderma-like aspect with fibrosis and alterations of the elastic network. FAM111B gene analysis identified five different missense variants (two recurrent mutations were found respectively in three and four independent families). All the mutations were predicted to localize in the trypsin-like cysteine/serine peptidase domain of the protein. We suggest gain-of-function or dominant-negative mutations resulting in FAM111B enzymatic activity changes.

          Conclusions

          HFP with tendon contractures, myopathy and pulmonary fibrosis, is a multisystemic disorder due to autosomal dominant FAM111B mutations. Future functional studies will help in understanding the specific pathological process of this fibrosing disorder.

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          Most cited references14

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          NOTCH2 mutations cause Alagille syndrome, a heterogeneous disorder of the notch signaling pathway.

          Alagille syndrome (AGS) is caused by mutations in the gene for the Notch signaling pathway ligand Jagged1 (JAG1), which are found in 94% of patients. To identify the cause of disease in patients without JAG1 mutations, we screened 11 JAG1 mutation-negative probands with AGS for alterations in the gene for the Notch2 receptor (NOTCH2). We found NOTCH2 mutations segregating in two families and identified five affected individuals. Renal manifestations, a minor feature in AGS, were present in all the affected individuals. This demonstrates that AGS is a heterogeneous disorder and implicates NOTCH2 mutations in human disease.
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            Mutations in NOTCH2 cause Hajdu-Cheney syndrome, a disorder of severe and progressive bone loss.

            We used an exome-sequencing strategy and identified an allelic series of NOTCH2 mutations in Hajdu-Cheney syndrome, an autosomal dominant multisystem disorder characterized by severe and progressive bone loss. The Hajdu-Cheney syndrome mutations are predicted to lead to the premature truncation of NOTCH2 with either disruption or loss of the C-terminal proline-glutamate-serine-threonine-rich proteolytic recognition sequence, the absence of which has previously been shown to increase Notch signaling.
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              Mutations in FAM111B cause hereditary fibrosing poikiloderma with tendon contracture, myopathy, and pulmonary fibrosis.

              Congenital poikiloderma is characterized by a combination of mottled pigmentation, telangiectasia, and epidermal atrophy in the first few months of life. We have previously described a South African European-descent family affected by a rare autosomal-dominant form of hereditary fibrosing poikiloderma accompanied by tendon contracture, myopathy, and pulmonary fibrosis. Here, we report the identification of causative mutations in FAM111B by whole-exome sequencing. In total, three FAM111B missense mutations were identified in five kindreds of different ethnic backgrounds. The mutation segregated with the disease in one large pedigree, and mutations were de novo in two other pedigrees. All three mutations were absent from public databases and were not observed on Sanger sequencing of 388 ethnically matched control subjects. The three single-nucleotide mutations code for amino acid changes that are clustered within a putative trypsin-like cysteine/serine peptidase domain of FAM111B. These findings provide evidence of the involvement of FAM111B in congenital poikiloderma and multisystem fibrosis. Copyright © 2013 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.
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                Author and article information

                Contributors
                sandra.mercier@chu-nantes.fr
                sebastien.kury@chu-nantes.fr
                Emmanuelle.SALORT-CAMPANA@ap-hm.fr
                armelle.magot@chu-nantes.fr
                uaa2104@cumc.columbia.edu
                thomas.besnard@chu-nantes.fr
                nathalie.bodak@gmail.com
                Chantal.Bou-Hanna@univ-nantes.fr
                flora.breheret@chu-nantes.fr
                perrine.brunelle@chu-nantes.fr
                florence.caillon@chu-nantes.fr
                b.chabrol@ap-hm.fr
                valerie.cormier-daire@inserm.fr
                albert.david@chu-nantes.fr
                anne-marie.maronne@psl.aphp.fr
                laurence.faivre@chu-dijon.fr
                dominique.Figarella-Branger@medecine.univ-mrs.fr
                e.fleurence@esean.fr
                mg3560@cumc.columbia.edu
                romain.gherardi@hmn.ap-hop-paris.fr
                Alice.Goldenberg@chu-rouen.fr
                antoine.hamel@chu-nantes.fr
                jigual.ch-lagny77@apicrypt.fr
                IRVINEA@tcd.ie
                dominique.israel-biet@egp.aphp.fr
                caroline.kannengiesser@bch.aphp.fr
                christian.laboisse@chu-nantes.fr
                cedric.lecaignec@chu-nantes.fr
                jymahe@wanadoo.fr
                Stephanie.MALLET@ap-hm.fr
                s.macgowan@dundee.ac.uk
                maeve_mc_aleer@hotmail.com
                w.h.i.mclean@dundee.ac.uk
                cecile.meni@nck.aphp.fr
                arnold.munnich@inserm.fr
                docteur.mussini@wanadoo.fr
                pln2104@cumc.columbia.edu
                jgo1@cumc.columbia.edu
                grainne.oregan@olchc.ie
                yann.pereon@univ-nantes.fr
                dr.perrier@pediatrieromainrolland.fr
                jpiard@chu-besancon.fr
                epuzenat@chu-besancon.fr
                js4171@cumc.columbia.edu
                f.j.d.smith@dundee.ac.uk
                nadem.soufir@bch.aphp.fr
                kt8@cumc.columbia.edu
                christel.thauvin@chu-dijon.fr
                cu2119@cumc.columbia.edu
                Rosemarie.Watson@olchc.ie
                n.khumalo@uct.ac.za
                bongani.mayosi@uct.ac.za
                sebastien.barbarot@chu-nantes.fr
                stephane.bezieau@chu-nantes.fr
                Journal
                Orphanet J Rare Dis
                Orphanet J Rare Dis
                Orphanet Journal of Rare Diseases
                BioMed Central (London )
                1750-1172
                15 October 2015
                15 October 2015
                2015
                : 10
                : 135
                Affiliations
                [ ]CHU de Nantes, Service de Génétique Médicale, Unité de Génétique Clinique, Centre de Référence Anomalies de Développement et Syndromes Malformatifs de l’interrégion Grand-Ouest, 9 quai Moncousu, 44093 Nantes CEDEX 1, France
                [ ]INSERM UMR1089, Atlantic Gene Therapy Institute, University of Nantes, Nantes, France
                [ ]Centre de Référence des Maladies Neuromusculaires Rares de l’Enfant et de l’Adulte Nantes-Angers, Nantes, F-44000 France
                [ ]CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093 Nantes CEDEX 1, France
                [ ]Hôpital de la Timone, Service de Neurologie, Centre de Référence des maladies Neuromusculaires et Sclérose Latérale Amyotrophique, Marseille, France
                [ ]CHU de Nantes, Laboratoire d’Explorations Fonctionnelles, Nantes, F-44000 France
                [ ]Department of Medicine, Columbia University Medical Center, New York, NY USA
                [ ]Hôpital Necker Enfants Malades, AP-HP, Service de Dermatologie, Paris, France
                [ ]Equipe d’accueil Biometadys, Université de Nantes, Nantes, France
                [ ]CHU Nantes, Service de Radiologie, CHU Nantes, Nantes, F-44000 France
                [ ]Service de neuropédiatrie, Hôpital Timone, Aix-Marseille Université, Marseille, France
                [ ]Hôpital Necker-Enfants malades, AP-HP, U781, Fondation Imagine, Paris Descartes-Sorbonne Paris Cité, Service de Génétique, Paris, 75015 France
                [ ]Centre de référence de Pathologie Neuromusculaire Paris-Est, Institut de Myologie, GHU La Pitié-Salpétrière, AP-HP, Paris, France
                [ ]Equipe d’accueil EA 4271 GAD “Génétique des Anomalies du Développement”, IFR Santé STIC, Université de Bourgogne, Dijon, France
                [ ]Centre de Référence Anomalies de Développement et Syndromes Malformatifs de l’interrégion Grand-Est et Centre de Génétique, Hôpital d’Enfants, CHU, Dijon, France
                [ ]Laboratoire de Neuropathologie, Faculté de Médecine, CHU Timone, Marseille, France
                [ ]Etablissement de Santé pour Enfants et Adolescents de la région Nantaise, Nantes, France
                [ ]Department of Neurology, Columbia University Medical Center, New York, NY USA
                [ ]APHP, Service d’Histologie, INSERM U841, CHU Mondor, Créteil, France
                [ ]CHU de Rouen, Hôpital Charles Nicolles, Service de Génétique, Rouen, France
                [ ]CHU de Nantes, Service de Chirurgie Infantile, Nantes, France
                [ ]CH de Marne la Vallée, Service de Pneumologie, Jossigny, France
                [ ]Department of Paediatric Dermatology, Our Lady’s Children’s Hospital Crumlin, Dublin, Ireland
                [ ]National Children’s Research Centre, Our Lady’s Children’s Hospital, Dublin, Ireland
                [ ]Clinical Medicine, Trinity College Dublin, Dublin, Ireland
                [ ]AP-HP Hôpital Européen Georges Pompidou, Service de pneumologie, Paris, France
                [ ]AP-HP, Hôpital Bichat, Service de Génétique, Paris, France
                [ ]Laboratoire d’Anatomopathologie A, Faculté de Médecine, Université de Nantes, 1, rue Gaston Veil, Nantes Cedex, 44035 France
                [ ]CHU Nantes, Service de Génétique Médicale, Unité de Cytogénétique, 9 quai Moncousu, 44093 Nantes CEDEX 1, France
                [ ]Service de Dermatologie, Hôpital La Timone, Aix Marseille Université, Provence, France
                [ ]Centre for Dermatology and Genetic Medicine, Colleges of Life Sciences and Medicine, Dentistry & Nursing, University of Dundee, Dundee, UK
                [ ]Division of Computational Biology, College of Life Sciences, University of Dundee, Dundee, UK
                [ ]Department of Pathology and Cell Biology, Personalized Genomic Medicine, Columbia University Medical Center, New York, NY USA
                [ ]Department of Ophthalmology, Columbia University Medical Center, New York, NY USA
                [ ]CHU de Besançon, Service de Génétique Médicale, Besançon, France
                [ ]CHU de Besançon, Service de Dermatologie, Besançon, France
                [ ]Dermatology and Genetic Medicine, University of Dundee, Dundee, UK
                [ ]AP-HP, Hôpital Bichat, Service de Génétique, INSERM U976, Paris, France
                [ ]Division of Neuropathology, Columbia University Medical Center, New York, NY USA
                [ ]Division of Dermatology, Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
                [ ]Cardiovascular Genetics Laboratory, Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
                [ ]CHU Nantes, Clinique dermatologique, Hôtel Dieu, Place Alexis Ricordeau, 44000 Nantes, France
                Article
                352
                10.1186/s13023-015-0352-4
                4608180
                26471370
                4e26bb87-06b7-4784-8c2c-4ea80a457b34
                © Mercier et al. 2015

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                : 3 August 2015
                : 5 October 2015
                Categories
                Research
                Custom metadata
                © The Author(s) 2015

                Infectious disease & Microbiology
                poikiloderma,myopathy,contractures,pulmonary fibrosis,adiposis
                Infectious disease & Microbiology
                poikiloderma, myopathy, contractures, pulmonary fibrosis, adiposis

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