1
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When Rothmund-Thomson syndrome is not: two new cases of Clericuzio-type poikiloderma with neutropenia. Clin Dysmorphol 2021; 30:50-53. [PMID: 32897901 DOI: 10.1097/mcd.0000000000000332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Piccolo V, Russo T, Di Pinto D, Pota E, Di Martino M, Piluso G, Ronchi A, Argenziano G, Di Brizzi EV, Santoro C. Poikiloderma With Neutropenia and Mastocytosis: A Case Report and a Review of Dermatological Signs. Front Med (Lausanne) 2021; 8:680363. [PMID: 34179048 PMCID: PMC8222900 DOI: 10.3389/fmed.2021.680363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 04/27/2021] [Indexed: 12/02/2022] Open
Abstract
Poikiloderma with neutropenia (PN) is a very rare genetic disorder mainly characterized by poikiloderma and congenital neutropenia, which explains the recurrence of respiratory infections and risk of developing bronchiectasis. Patients are also prone to develop hematological and skin cancers. Here, we present the case of a patient, the only child of apparently unrelated Serbian parents, affected by PN resulting from the homozygous mutation NM_024598.3:c.243G>A (p.Trp81Ter) of USB1; early onset of poikiloderma (1 year of age) was associated with cutaneous mastocytosis. We also provide a review of the literature on this uncommon condition with a focus on dermatological findings.
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Affiliation(s)
- Vincenzo Piccolo
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Teresa Russo
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Daniela Di Pinto
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Elvira Pota
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Martina Di Martino
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giulio Piluso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Andrea Ronchi
- Anatomic Pathology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | | | | | - Claudia Santoro
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy.,Department of Physical and Mental Health, and Preventive Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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3
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Sakka R, Mahjoub B, Kerkeni E, Werdani A, Boussoffara R, Ben Cheikh H, M'rad R, Sfar MT. Poikiloderma with neutropenia in a Tunisian patient with a novel C16orf57 gene mutation. Pediatr Blood Cancer 2018; 65:e27262. [PMID: 29797650 DOI: 10.1002/pbc.27262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/06/2018] [Accepted: 05/07/2018] [Indexed: 12/23/2022]
Abstract
Poikiloderma with neutropenia (PN) is a genodermatosis characterized by poikiloderma, permanent neutropenia, recurrent infections, nail abnormalities, and palmoplantar hyperkeratosis. We report the case of a Tunisian patient with PN. Skin lesions started from the face and spread to the extremities and trunk. Neutropenia was initially periodic and concomitant with infections periods. DNA analysis identified a novel homozygous deletion of a 1-bp (c.161delC, p.P54RfsX60) in the C16orf57gene, presumed to be causative. This report presents the variability of the clinical manifestations and evolution of PN and emphasizes the importance of studying other patients with PN to better delineate mutations profile among populations.
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Affiliation(s)
- Rania Sakka
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Bahri Mahjoub
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
| | - Emna Kerkeni
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Amina Werdani
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
| | | | - Hassen Ben Cheikh
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Ridha M'rad
- Laboratory of Human Genetics, Doctoral School of Science and Biotechnology, Faculty of Medicine of Tunis, University of Tunis El Manar, 1007 Tunis, Tunisia
| | - Mohamed Taher Sfar
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
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Colombo EA, Elcioglu NH, Graziano C, Farinelli P, Di Fede E, Neri I, Facchini E, Greco M, Gervasini C, Larizza L. Insights into Mutation Effect in Three Poikiloderma with Neutropenia Patients by Transcript Analysis and Disease Evolution of Reported Patients with the Same Pathogenic Variants. J Clin Immunol 2018; 38:494-502. [PMID: 29770900 DOI: 10.1007/s10875-018-0508-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/06/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE Poikiloderma with neutropenia (PN) is a genodermatosis currently described in 77 patients, all presenting with early-onset poikiloderma, neutropenia, and several additional signs. Biallelic loss-of-function mutations in USB1 gene are detected in all molecularly tested patients but genotype-phenotype correlation remains elusive. Cancer predisposition is recognized among PN features and pathogenic variants found in patients who developed early in life myelodysplasia (n = 12), acute myeloid leukemia (n = 2), and squamous cell carcinoma (n = 2) should be kept into account in management and follow-up of novel patients. This will hopefully allow achieving data clustered on specific mutations relevant to oncological surveillance of the carrier patients. METHODS We describe the clinical features of three unreported PN patients and characterize their USB1 pathogenic variants by transcript analysis to get insights into the effect on the overall phenotype and disease evolution. RESULTS A Turkish boy is homozygous for the c.531delA deletion, a recurrent mutation in Turkey; an adult Italian male is compound heterozygous for two nonsense mutations, c.243G>A and c.541C>T, while an Italian boy is homozygous for the splicing c.683_693+1del variant. The identified mutations have already been reported in PN patients who developed hematologic or skin cancer. Aberrant mRNAs of all four mutated alleles could be identified confirming that transcripts of USB1 main isoform either carrying stop codons or mis-spliced may at least partially escape nonsense-mediated decay. CONCLUSIONS Our study addresses the need of gathering insights on genotype-phenotype correlations in newly described PN patients, by transcript analysis and information on disease evolution of reported patients with the same pathogenic variants.
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Affiliation(s)
- Elisa A Colombo
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy.
| | - Nursel H Elcioglu
- Department of Pediatric Genetics, Marmara University Medical School, 34890, Istanbul, Turkey.,Department of Pediatric Genetics, Turkey and Eastern Mediterranean University, Cyprus, 10, Mersin, Turkey
| | - Claudio Graziano
- U.O. Genetica Medica, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Pamela Farinelli
- Clinica Dermatologica, Azienda ospedaliero universitaria "Maggiore della Carità", Corso Giuseppe Mazzini 18, 28100, Novara, Italy
| | - Elisabetta Di Fede
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy
| | - Iria Neri
- U.O. Dermatologia, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Elena Facchini
- U.O. Pediatria - Programma di Oncologia, Ematologia e Trapianto, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Mariangela Greco
- Divisione di Ematologia, Azienda Ospedaliero Universitaria "Maggiore della Carità", Corso Giuseppe Mazzini 18, 28100, Novara, Italy
| | - Cristina Gervasini
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy
| | - Lidia Larizza
- Laboratorio di Citogenetica Medica e Genetica Molecolare, Centro di Ricerche e Tecnologie Biomediche IRCCS-Istituto Auxologico Italiano, Via Ariosto 13, 20145, Milan, Italy
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5
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Donadieu J, Beaupain B, Fenneteau O, Bellanné-Chantelot C. Congenital neutropenia in the era of genomics: classification, diagnosis, and natural history. Br J Haematol 2017; 179:557-574. [PMID: 28875503 DOI: 10.1111/bjh.14887] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review focuses on the classification, diagnosis and natural history of congenital neutropenia (CN). CN encompasses a number of genetic disorders with chronic neutropenia and, for some, affecting other organ systems, such as the pancreas, central nervous system, heart, bone and skin. To date, 24 distinct genes have been associated with CN. The number of genes involved makes gene screening difficult. This can be solved by next-generation sequencing (NGS) of targeted gene panels. One of the major complications of CN is spontaneous leukaemia, which is preceded by clonal somatic evolution, and can be screened by a targeted NGS panel focused on somatic events.
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Affiliation(s)
- Jean Donadieu
- Service d'Hémato Oncologie Pédiatrique, Registre des neutropénies congénitales, AP-HP Hopital Trousseau, Paris, France
| | - Blandine Beaupain
- Service d'Hémato Oncologie Pédiatrique, Registre des neutropénies congénitales, AP-HP Hopital Trousseau, Paris, France
| | - Odile Fenneteau
- Laboratoire d'Hématologie, AP-HP Hôpital S Robert Debré, Paris, France
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Patil P, Uechi T, Kenmochi N. Incomplete splicing of neutrophil-specific genes affects neutrophil development in a zebrafish model of poikiloderma with neutropenia. RNA Biol 2016; 12:426-34. [PMID: 25849198 DOI: 10.1080/15476286.2015.1017240] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Poikiloderma with neutropenia (PN) is a rare inherited disorder characterized by poikiloderma, facial dysmorphism, pachyonychia, short stature and neutropenia. The molecular testing of PN patients has identified mutations in the C16orf57 gene, which encodes a protein referred to as USB1 (U Six Biogenesis 1). In this study, we developed a zebrafish model of PN by the microinjection of morpholino antisense oligos to suppress usb1 gene function. Severe morphological defects, including a bent tail, thin yolk extension and reduced body length, were predominant in the Usb1-suppressed embryos (morphants). We also observed significantly decreased number of neutrophils in the morphants by Sudan Black staining. Interestingly, the splicing of genes involved in neutrophil differentiation and development, such as mpx, ncf1, ela3l and npsn, was aberrant in the morphants. However, the splicing of haematopoietic precursors and erythroid-specific genes was unaltered. Importantly, the neutrophil defects were almost completely rescued by co-injection of ela3l mRNA, the most markedly affected gene in the morphants. Our study demonstrated a possible role of USB1 in modulating the tissue-specific gene splicing that eventually leads to the impaired development of neutrophils. This zebrafish model could serve as a valuable tool to investigate the causative role of USB1 in PN pathogenesis.
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Affiliation(s)
- Prakash Patil
- a Frontier Science Research Center; University of Miyazaki; Miyazaki , Japan
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A zebrafish model of Poikiloderma with Neutropenia recapitulates the human syndrome hallmarks and traces back neutropenia to the myeloid progenitor. Sci Rep 2015; 5:15814. [PMID: 26522474 PMCID: PMC4629135 DOI: 10.1038/srep15814] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 09/22/2015] [Indexed: 01/27/2023] Open
Abstract
Poikiloderma with Neutropenia (PN) is an autosomal recessive genodermatosis characterized by early-onset poikiloderma, pachyonychia, hyperkeratosis, bone anomalies and neutropenia, predisposing to myelodysplasia. The causative C16orf57/USB1 gene encodes a conserved phosphodiesterase that regulates the stability of spliceosomal U6-RNA. The involvement of USB1 in splicing has not yet allowed to unveil the pathogenesis of PN and how the gene defects impact on skin and bone tissues besides than on the haematological compartment. We established a zebrafish model of PN using a morpholino-knockdown approach with two different splicing morpholinos. Both usb1-depleted embryos displayed developmental abnormalities recapitulating the signs of the human syndrome. Besides the pigmentation and osteochondral defects, usb1-knockdown caused defects in circulation, manifested by a reduced number of circulating cells. The overall morphant phenotype was also obtained by co-injecting sub-phenotypic dosages of the two morpholinos and could be rescued by human USB1 RNA. Integrated in situ and real-time expression analyses of stage-specific markers highlighted defects of primitive haematopoiesis and traced back the dramatic reduction in neutrophil myeloperoxidase to the myeloid progenitors showing down-regulated pu.1 expression. Our vertebrate model of PN demonstrates the intrinsic requirement of usb1 in haematopoiesis and highlights PN as a disorder of myeloid progenitors associated with bone marrow dysfunction.
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Mercier S, Küry S, Salort-Campana E, Magot A, Agbim U, Besnard T, Bodak N, Bou-Hanna C, Bréhéret F, Brunelle P, Caillon F, Chabrol B, Cormier-Daire V, David A, Eymard B, Faivre L, Figarella-Branger D, Fleurence E, Ganapathi M, Gherardi R, Goldenberg A, Hamel A, Igual J, Irvine AD, Israël-Biet D, Kannengiesser C, Laboisse C, Le Caignec C, Mahé JY, Mallet S, MacGowan S, McAleer MA, McLean I, Méni C, Munnich A, Mussini JM, Nagy PL, Odel J, O'Regan GM, Péréon Y, Perrier J, Piard J, Puzenat E, Sampson JB, Smith F, Soufir N, Tanji K, Thauvin C, Ulane C, Watson RM, Khumalo NP, Mayosi BM, Barbarot S, Bézieau S. Expanding the clinical spectrum of hereditary fibrosing poikiloderma with tendon contractures, myopathy and pulmonary fibrosis due to FAM111B mutations. Orphanet J Rare Dis 2015; 10:135. [PMID: 26471370 PMCID: PMC4608180 DOI: 10.1186/s13023-015-0352-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/05/2015] [Indexed: 12/05/2022] Open
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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Affiliation(s)
- Sandra Mercier
- 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.
| | - Sébastien Küry
- CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093, Nantes CEDEX 1, France.
| | - Emmanuelle Salort-Campana
- Hôpital de la Timone, Service de Neurologie, Centre de Référence des maladies Neuromusculaires et Sclérose Latérale Amyotrophique, Marseille, France.
| | - Armelle Magot
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, Nantes, F-44000, France. .,CHU de Nantes, Laboratoire d'Explorations Fonctionnelles, Nantes, F-44000, France.
| | - Uchenna Agbim
- Department of Medicine, Columbia University Medical Center, New York, NY, USA.
| | - Thomas Besnard
- CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093, Nantes CEDEX 1, France.
| | - Nathalie Bodak
- Hôpital Necker Enfants Malades, AP-HP, Service de Dermatologie, Paris, France.
| | | | - Flora Bréhéret
- CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093, Nantes CEDEX 1, France.
| | - Perrine Brunelle
- CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093, Nantes CEDEX 1, France.
| | - Florence Caillon
- CHU Nantes, Service de Radiologie, CHU Nantes, Nantes, F-44000, France.
| | - Brigitte Chabrol
- Service de neuropédiatrie, Hôpital Timone, Aix-Marseille Université, Marseille, France.
| | - Valérie Cormier-Daire
- Hôpital Necker-Enfants malades, AP-HP, U781, Fondation Imagine, Paris Descartes-Sorbonne Paris Cité, Service de Génétique, Paris, 75015, France.
| | - Albert David
- 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.
| | - Bruno Eymard
- Centre de référence de Pathologie Neuromusculaire Paris-Est, Institut de Myologie, GHU La Pitié-Salpétrière, AP-HP, Paris, France.
| | - Laurence Faivre
- 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.
| | | | - Emmanuelle Fleurence
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, Nantes, F-44000, France. .,Etablissement de Santé pour Enfants et Adolescents de la région Nantaise, Nantes, France.
| | - Mythily Ganapathi
- Department of Neurology, Columbia University Medical Center, New York, NY, USA.
| | - Romain Gherardi
- APHP, Service d'Histologie, INSERM U841, CHU Mondor, Créteil, France.
| | - Alice Goldenberg
- CHU de Rouen, Hôpital Charles Nicolles, Service de Génétique, Rouen, France.
| | - Antoine Hamel
- CHU de Nantes, Service de Chirurgie Infantile, Nantes, France.
| | - Jeanine Igual
- CH de Marne la Vallée, Service de Pneumologie, Jossigny, France.
| | - Alan D Irvine
- 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.
| | | | | | - Christian Laboisse
- Equipe d'accueil Biometadys, Université de Nantes, Nantes, France. .,Laboratoire d'Anatomopathologie A, Faculté de Médecine, Université de Nantes, 1, rue Gaston Veil, Nantes Cedex, 44035, France.
| | - Cédric Le Caignec
- CHU Nantes, Service de Génétique Médicale, Unité de Cytogénétique, 9 quai Moncousu, 44093, Nantes CEDEX 1, France.
| | - Jean-Yves Mahé
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, Nantes, F-44000, France. .,Etablissement de Santé pour Enfants et Adolescents de la région Nantaise, Nantes, France.
| | - Stéphanie Mallet
- Service de Dermatologie, Hôpital La Timone, Aix Marseille Université, Provence, France.
| | - Stuart MacGowan
- 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.
| | - Maeve A McAleer
- 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.
| | - Irwin McLean
- Centre for Dermatology and Genetic Medicine, Colleges of Life Sciences and Medicine, Dentistry & Nursing, University of Dundee, Dundee, UK.
| | - Cécile Méni
- Hôpital Necker Enfants Malades, AP-HP, Service de Dermatologie, Paris, France.
| | - Arnold Munnich
- Hôpital Necker-Enfants malades, AP-HP, U781, Fondation Imagine, Paris Descartes-Sorbonne Paris Cité, Service de Génétique, Paris, 75015, France.
| | - Jean-Marie Mussini
- Laboratoire d'Anatomopathologie A, Faculté de Médecine, Université de Nantes, 1, rue Gaston Veil, Nantes Cedex, 44035, France.
| | - Peter L Nagy
- Department of Pathology and Cell Biology, Personalized Genomic Medicine, Columbia University Medical Center, New York, NY, USA.
| | - Jeffrey Odel
- Department of Ophthalmology, Columbia University Medical Center, New York, NY, USA.
| | - Grainne M O'Regan
- Department of Paediatric Dermatology, Our Lady's Children's Hospital Crumlin, Dublin, Ireland.
| | - Yann Péréon
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, Nantes, F-44000, France. .,CHU de Nantes, Laboratoire d'Explorations Fonctionnelles, Nantes, F-44000, France.
| | - Julie Perrier
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, Nantes, F-44000, France.
| | - Juliette Piard
- CHU de Besançon, Service de Génétique Médicale, Besançon, France.
| | - Eve Puzenat
- CHU de Besançon, Service de Dermatologie, Besançon, France.
| | - Jacinda B Sampson
- Department of Neurology, Columbia University Medical Center, New York, NY, USA.
| | - Frances Smith
- Dermatology and Genetic Medicine, University of Dundee, Dundee, UK.
| | - Nadem Soufir
- AP-HP, Hôpital Bichat, Service de Génétique, INSERM U976, Paris, France.
| | - Kurenai Tanji
- Division of Neuropathology, Columbia University Medical Center, New York, NY, USA.
| | - Christel Thauvin
- 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.
| | - Christina Ulane
- Department of Neurology, Columbia University Medical Center, New York, NY, USA.
| | - Rosemarie M Watson
- Department of Paediatric Dermatology, Our Lady's Children's Hospital Crumlin, Dublin, Ireland.
| | - Nonhlanhla P Khumalo
- Division of Dermatology, Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa.
| | - Bongani M Mayosi
- 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.
| | - Sébastien Barbarot
- CHU Nantes, Clinique dermatologique, Hôtel Dieu, Place Alexis Ricordeau, 44000, Nantes, France.
| | - Stéphane Bézieau
- CHU Nantes, Service de Génétique Médicale, Unité de Génétique Moléculaire, 9 quai Moncousu, 44093, Nantes CEDEX 1, France. .,Equipe d'accueil Biometadys, Université de Nantes, Nantes, France.
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9
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Negri G, Crescenzi B, Colombo EA, Fontana L, Barba G, Arcioni F, Gervasini C, Mecucci C, Larizza L. Expanding the role of the splicingUSB1gene from Poikiloderma with Neutropenia to acquired myeloid neoplasms. Br J Haematol 2015; 171:557-65. [DOI: 10.1111/bjh.13651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/22/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Gloria Negri
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | | | - Elisa Adele Colombo
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | - Laura Fontana
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | - Gianluca Barba
- Haematology Unit; Polo Unico S.M. Misericordia; Perugia Italy
| | - Francesco Arcioni
- Pediatric Oncology Haematology Unit; University of Perugia; Polo Unico S.M. Misericordia; Perugia Italy
| | - Cristina Gervasini
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | | | - Lidia Larizza
- Medical Cytogenetics and Molecular Genetics Laboratory; Centro di Ricerche e Tecnologie Biomediche IRCCS; Istituto Auxologico Italiano; Milan Italy
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10
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Koparir A, Gezdirici A, Koparir E, Ulucan H, Yilmaz M, Erdemir A, Yuksel A, Ozen M. Poikiloderma with neutropenia: genotype-ethnic origin correlation, expanding phenotype and literature review. Am J Med Genet A 2014; 164A:2535-40. [PMID: 25044170 DOI: 10.1002/ajmg.a.36683] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 05/05/2014] [Indexed: 11/06/2022]
Abstract
Poikiloderma with neutropenia (PN), is a rare genodermatosis associated with patognomic features of poikiloderma and permanent neutropenia. Three common recurrent mutations of related gene, USB1, were considered to be associated with three different ethnic origins. The most common recurrent mutation, c.531delA, has been detected in seven Caucasian patients in the literature. In this paper, we present review of all patients from the literature and report two additional patients of Turkish ancestry with the diagnosis of PN. The diagnosis of these two PN patients were made clinically and confirmed by molecular analysis which detected the most common recurrent mutation, c.531delA. Genotype-ethnic origin correlation hypothesis, therefore, has been strengthened with this result. Short stature in PN, is a common finding, which until now has never been treated with growth hormone (GH). One of our patients is the first patient with attempted treatment of short stature via GH administration. Finally, both of our patients had high-pitched voice and vocal cord nodules which might be considered as additional clinical findings not associated with PN before.
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Affiliation(s)
- Asuman Koparir
- Department of Medical Genetics, Cerrahpasa Medical School, Istanbul University, Istanbul, Turkey
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11
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Piard J, Aral B, Vabres P, Holder-Espinasse M, Mégarbané A, Gauthier S, Capra V, Pierquin G, Callier P, Baumann C, Pasquier L, Baujat G, Martorell L, Rodriguez A, Brady AF, Boralevi F, González-Enseñat MA, Rio M, Bodemer C, Philip N, Cordier MP, Goldenberg A, Demeer B, Wright M, Blair E, Puzenat E, Parent P, Sznajer Y, Francannet C, DiDonato N, Boute O, Barlogis V, Moldovan O, Bessis D, Coubes C, Tardieu M, Cormier-Daire V, Sousa AB, Franques J, Toutain A, Tajir M, Elalaoui SC, Geneviève D, Thevenon J, Courcet JB, Rivière JB, Collet C, Gigot N, Faivre L, Thauvin-Robinet C. Search for ReCQL4 mutations in 39 patients genotyped for suspected Rothmund-Thomson/Baller-Gerold syndromes. Clin Genet 2014; 87:244-51. [PMID: 24635570 DOI: 10.1111/cge.12361] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 02/12/2014] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
Abstract
Three overlapping conditions, namely Rothmund-Thomson (RTS), Baller-Gerold (BGS) and RAPADILINO syndromes, have been attributed to RECQL4 mutations. Differential diagnoses depend on the clinical presentation, but the numbers of known genes remain low, leading to the widespread prescription of RECQL4 sequencing. The aim of our study was therefore to determine the best clinical indicators for the presence of RECQL4 mutations in a series of 39 patients referred for RECQL4 molecular analysis and belonging to the RTS (27 cases) and BGS (12 cases) spectrum. One or two deleterious RECQL4 mutations were found in 10/27 patients referred for RTS diagnosis. Clinical and molecular reevaluation led to a different diagnosis in 7/17 negative cases, including Clericuzio-type poikiloderma with neutropenia, hereditary sclerosing poikiloderma, and craniosynostosis/anal anomalies/porokeratosis. No RECQL4 mutations were found in the BGS group without poikiloderma, confirming that RECQL4 sequencing was not indicated in this phenotype. One chromosomal abnormality and one TWIST mutation was found in this cohort. This study highlights the search for differential diagnoses before the prescription of RECQL4 sequencing in this clinically heterogeneous group. The combination of clinically defined subgroups and next-generation sequencing will hopefully bring to light new molecular bases of syndromes with poikiloderma, as well as BGS without poikiloderma.
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Affiliation(s)
- J Piard
- EA 4271 GAD "Génétique des Anomalies du Développement", IFR Santé STIC, Université de Bourgogne, Dijon, France; Centre de Génétique Humaine, CHU Besançon, Besançon, France
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12
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Mercier S, Küry S, Shaboodien G, Houniet DT, Khumalo NP, Bou-Hanna C, Bodak N, Cormier-Daire V, David A, Faivre L, Figarella-Branger D, Gherardi RK, Glen E, Hamel A, Laboisse C, Le Caignec C, Lindenbaum P, Magot A, Munnich A, Mussini JM, Pillay K, Rahman T, Redon R, Salort-Campana E, Santibanez-Koref M, Thauvin C, Barbarot S, Keavney B, Bézieau S, Mayosi BM. Mutations in FAM111B cause hereditary fibrosing poikiloderma with tendon contracture, myopathy, and pulmonary fibrosis. Am J Hum Genet 2013; 93:1100-7. [PMID: 24268661 DOI: 10.1016/j.ajhg.2013.10.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/10/2013] [Accepted: 10/15/2013] [Indexed: 11/19/2022] Open
Abstract
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.
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Affiliation(s)
- Sandra Mercier
- Unité de Génétique Clinique, Service de Génétique Médicale, Centre de Référence Anomalies de Développement et Syndromes Malformatifs de l'Interrégion Grand-Ouest, Centre Hospitalier Universitaire Nantes, 9 Quai Moncousu, 44093 Nantes Cedex 1, France; Institut National de la Santé et de la Recherche Médicale UMR 1089, Atlantic Gene Therapy Institute, University of Nantes, 44007 Nantes, France
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13
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Mroczek S, Dziembowski A. U6 RNA biogenesis and disease association. WILEY INTERDISCIPLINARY REVIEWS-RNA 2013; 4:581-92. [PMID: 23776162 DOI: 10.1002/wrna.1181] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/14/2013] [Accepted: 05/15/2013] [Indexed: 12/15/2022]
Abstract
U6 snRNA is one of five uridine-rich noncoding RNAs that form the major spliceosome complex. Unlike other U-snRNAs, it reveals many distinctive aspects of biogenesis such as transcription by RNA polymerase III, transcript nuclear retention and particular features of transcript ends: monomethylated 5'-guanosine triphosphate as cap structure and a 2',3'-cyclic phosphate moiety (>P) at the 3' termini. U6-snRNA plays a central role in splicing and thus its transcription, maturation, snRNP formation, and recycling are essential for cellular homeostasis. U6 snRNA enters the splicing cycle as part of the tri-U4/U6.U5snRNP complex, and after significant structural arrangements forms the catalytic site of the spliceosome together with U2 snRNA and Prp8. U6 snRNA also contributes to the splicing reaction by coordinating metal cations required for catalysis. Many human diseases are associated with altered splicing processes. Disruptions of the basal splicing machinery can be lethal or lead to severe diseases such as spinal muscular atrophy, amyotrophic lateral sclerosis, or retinitis pigmentosa. Recent studies have identified a new U6 snRNA biogenesis factor Usb1, the absence of which leads to poikiloderma with neutropenia (PN) (OMIM 604173), an autosomal recessive skin disease. Usb1 is an evolutionarily conserved 3'→5' exoribonuclease that is responsible for removing 3'-terminal uridines from U6 snRNA transcripts, which leads to the formation of a 2',3' cyclic phosphate moiety (>P). This maturation step is fundamental for U6 snRNP assembly and recycling. Usb1 represents the first example of a direct association between a spliceosomal U6 snRNA biogenesis factor and human genetic disease.
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Affiliation(s)
- Seweryn Mroczek
- Department of Biophysics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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14
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Shchepachev V, Azzalin CM. The Mpn1 RNA exonuclease: Cellular functions and implication in disease. FEBS Lett 2013; 587:1858-62. [DOI: 10.1016/j.febslet.2013.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 05/06/2013] [Accepted: 05/06/2013] [Indexed: 01/23/2023]
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15
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Larizza L, Negri G, Colombo EA, Volpi L, Sznajer Y. Clinical utility gene card for: poikiloderma with neutropenia. Eur J Hum Genet 2013; 21:ejhg2012298. [PMID: 23321617 DOI: 10.1038/ejhg.2012.298] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Lidia Larizza
- Department of Health Sciences, University of Milan, Milan, Italy
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Mpn1, mutated in poikiloderma with neutropenia protein 1, is a conserved 3'-to-5' RNA exonuclease processing U6 small nuclear RNA. Cell Rep 2012; 2:855-65. [PMID: 23022480 DOI: 10.1016/j.celrep.2012.08.031] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 08/31/2012] [Accepted: 08/31/2012] [Indexed: 01/09/2023] Open
Abstract
Clericuzio-type poikiloderma with neutropenia (PN) is a rare genodermatosis associated with mutations in the C16orf57 gene, which codes for the uncharacterized protein hMpn1. We show here that, in both fission yeasts and humans, Mpn1 processes the spliceosomal U6 small nuclear RNA (snRNA) posttranscriptionally. In Mpn1-deficient cells, U6 molecules carry 3' end polyuridine tails that are longer than those in normal cells and lack a terminal 2',3' cyclic phosphate group. In mpn1Δ yeast cells, U6 snRNA and U4/U6 di-small nuclear RNA protein complex levels are diminished, leading to precursor messenger RNA splicing defects, which are reverted by expression of either yeast or human Mpn1 and by overexpression of U6. Recombinant hMpn1 is a 3'-to-5' RNA exonuclease that removes uridines from U6 3' ends, generating terminal 2',3' cyclic phosphates in vitro. Finally, U6 degradation rates increase in mpn1Δ yeasts and in lymphoblasts established from individuals affected by PN. Our data indicate that Mpn1 promotes U6 stability through 3' end posttranscriptional processing and implicate altered U6 metabolism as a potential mechanism for PN pathogenesis.
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Mroczek S, Krwawicz J, Kutner J, Lazniewski M, Kuciński I, Ginalski K, Dziembowski A. C16orf57, a gene mutated in poikiloderma with neutropenia, encodes a putative phosphodiesterase responsible for the U6 snRNA 3' end modification. Genes Dev 2012; 26:1911-25. [PMID: 22899009 DOI: 10.1101/gad.193169.112] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
C16orf57 encodes a human protein of unknown function, and mutations in the gene occur in poikiloderma with neutropenia (PN), which is a rare, autosomal recessive disease. Interestingly, mutations in C16orf57 were also observed among patients diagnosed with Rothmund-Thomson syndrome (RTS) and dyskeratosis congenita (DC), which are caused by mutations in genes involved in DNA repair and telomere maintenance. A genetic screen in Saccharomyces cerevisiae revealed that the yeast ortholog of C16orf57, USB1 (YLR132C), is essential for U6 small nuclear RNA (snRNA) biogenesis and cell viability. Usb1 depletion destabilized U6 snRNA, leading to splicing defects and cell growth defects, which was suppressed by the presence of multiple copies of the U6 snRNA gene SNR6. Moreover, Usb1 is essential for the generation of a unique feature of U6 snRNA; namely, the 3'-terminal phosphate. RNAi experiments in human cells followed by biochemical and functional analyses confirmed that, similar to yeast, C16orf57 encodes a protein involved in the 2',3'-cyclic phosphate formation at the 3' end of U6 snRNA. Advanced bioinformatics predicted that C16orf57 encodes a phosphodiesterase whose putative catalytic activity is essential for its function in vivo. Our results predict an unexpected molecular basis for PN, DC, and RTS and provide insight into U6 snRNA 3' end formation.
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Affiliation(s)
- Seweryn Mroczek
- Department of Biophysics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106 Warsaw, Poland
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Novel C16orf57 mutations in patients with Poikiloderma with Neutropenia: bioinformatic analysis of the protein and predicted effects of all reported mutations. Orphanet J Rare Dis 2012; 7:7. [PMID: 22269211 PMCID: PMC3315733 DOI: 10.1186/1750-1172-7-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/23/2012] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Poikiloderma with Neutropenia (PN) is a rare autosomal recessive genodermatosis caused by C16orf57 mutations. To date 17 mutations have been identified in 31 PN patients. RESULTS We characterize six PN patients expanding the clinical phenotype of the syndrome and the mutational repertoire of the gene. We detect the two novel C16orf57 mutations, c.232C>T and c.265+2T>G, as well as the already reported c.179delC, c.531delA and c.693+1G>T mutations. cDNA analysis evidences the presence of aberrant transcripts, and bioinformatic prediction of C16orf57 protein structure gauges the mutations effects on the folded protein chain. Computational analysis of the C16orf57 protein shows two conserved H-X-S/T-X tetrapeptide motifs marking the active site of a two-fold pseudosymmetric structure recalling the 2H phosphoesterase superfamily. Based on this model C16orf57 is likely a 2H-active site enzyme functioning in RNA processing, as a presumptive RNA ligase. According to bioinformatic prediction, all known C16orf57 mutations, including the novel mutations herein described, impair the protein structure by either removing one or both tetrapeptide motifs or by destroying the symmetry of the native folding.Finally, we analyse the geographical distribution of the recurrent mutations that depicts clusters featuring a founder effect. CONCLUSIONS In cohorts of patients clinically affected by genodermatoses with overlapping symptoms, the molecular screening of C16orf57 gene seems the proper way to address the correct diagnosis of PN, enabling the syndrome-specific oncosurveillance. The bioinformatic prediction of the C16orf57 protein structure denotes a very basic enzymatic function consistent with a housekeeping function. Detection of aberrant transcripts, also in cells from PN patients carrying early truncated mutations, suggests they might be translatable. Tissue-specific sensitivity to the lack of functionally correct protein accounts for the main cutaneous and haematological clinical signs of PN patients.
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