1
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Li AL, He JQ, Zeng L, Hu YQ, Wang M, Long JY, Chang SH, Jin JY, Xiang R. Case report: Identification of novel fibrillin-2 variants impacting disulfide bond and causing congenital contractural arachnodactyly. Front Genet 2023; 14:1035887. [PMID: 36936417 PMCID: PMC10020613 DOI: 10.3389/fgene.2023.1035887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 02/07/2023] [Indexed: 03/06/2023] Open
Abstract
Background: Congenital contractural arachnodactyly (CCA) is an autosomal dominant connective tissue disorder with clinical features of arthrogryposis, arachnodactyly, crumpled ears, scoliosis, and muscular hypoplasia. The heterozygous pathogenic variants in FBN2 have been shown to cause CCA. Fibrillin-2 is related to the elasticity of the tissue and has been demonstrated to play an important role in the constitution of extracellular microfibrils in elastic fibers, providing strength and flexibility to the connective tissue that sustains the body's joints and organs. Methods: We recruited two Chinese families with arachnodactyly and bilateral arthrogryposis of the fingers. Whole-exome sequencing (WES) and co-segregation analysis were employed to identify their genetic etiologies. Three-dimensional protein models were used to analyze the pathogenic mechanism of the identified variants. Results: We have reported two CCA families and identified two novel missense variants in FBN2 (NM_001999.3: c.4093T>C, p.C1365R and c.2384G>T, p.C795F). The structural models of the mutant FBN2 protein in rats exhibited that both the variants could break disulfide bonds. Conclusion: We detected two FBN2 variants in two families with CCA. Our description expands the genetic profile of CCA and emphasizes the pathogenicity of disulfide bond disruption in FBN2.
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Affiliation(s)
- An-Lei Li
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- School of Life Sciences, Central South University, Changsha, China
| | - Ji-Qiang He
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
| | - Lei Zeng
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
| | - Yi-Qiao Hu
- School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Min Wang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
- Department of Nephrology, Xiangya Hospital of Central South University, Changsha, China
| | - Jie-Yi Long
- School of Life Sciences, Central South University, Changsha, China
| | - Si-Hua Chang
- School of Life Sciences, Central South University, Changsha, China
| | - Jie-Yuan Jin
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- *Correspondence: Jie-Yuan Jin, ; Rong Xiang,
| | - Rong Xiang
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- *Correspondence: Jie-Yuan Jin, ; Rong Xiang,
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2
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Yagi H, Takiguchi H, Takeda N, Inuzuka R, Taniguchi Y, Porto KJ, Ishiura H, Mitsui J, Morita H, Komuro I. Family with congenital contractural arachnodactyly due to a novel multiexon deletion of the FBN2 gene. Clin Case Rep 2022; 10:e05335. [PMID: 35154713 PMCID: PMC8826123 DOI: 10.1002/ccr3.5335] [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: 10/13/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 11/21/2022] Open
Abstract
Congenital contractural arachnodactyly (CCA) is caused by pathogenic FBN2 variants; however, the contributions of copy number variations (CNVs) to CCA are still unknown. Here, we report on a familial case of CCA, in which a novel multiexon deletion of exons 35-39 in FBN2 was identified after simple CNV prediction.
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Affiliation(s)
- Hiroki Yagi
- Department of Cardiovascular MedicineThe University of Tokyo HospitalTokyoJapan
- Marfan Syndrome CenterThe University of Tokyo HospitalTokyoJapan
| | - Hiroshi Takiguchi
- Department of Cardiovascular MedicineThe University of Tokyo HospitalTokyoJapan
| | - Norifumi Takeda
- Department of Cardiovascular MedicineThe University of Tokyo HospitalTokyoJapan
- Marfan Syndrome CenterThe University of Tokyo HospitalTokyoJapan
| | - Ryo Inuzuka
- Marfan Syndrome CenterThe University of Tokyo HospitalTokyoJapan
- Department of PediatricsThe University of Tokyo HospitalTokyoJapan
| | - Yuki Taniguchi
- Marfan Syndrome CenterThe University of Tokyo HospitalTokyoJapan
- Department of Orthopedic SurgeryThe University of Tokyo HospitalTokyoJapan
| | | | - Hiroyuki Ishiura
- Department of NeurologyThe University of Tokyo HospitalTokyoJapan
| | - Jun Mitsui
- Department of NeurologyThe University of Tokyo HospitalTokyoJapan
| | - Hiroyuki Morita
- Department of Cardiovascular MedicineThe University of Tokyo HospitalTokyoJapan
| | - Issei Komuro
- Department of Cardiovascular MedicineThe University of Tokyo HospitalTokyoJapan
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3
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Ure MC, Hamilton MJ. Triplication at 5q23.1 to 31.1 including LMNB1 in a patient with dilated cardiomyopathy, scoliosis and joint contractures. Clin Dysmorphol 2021; 30:177-180. [PMID: 34417370 DOI: 10.1097/mcd.0000000000000384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Mamie Curley Ure
- School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - Mark James Hamilton
- Department of Clinical Genetics, West of Scotland Centre for Genomic Medicine, Level 2A Laboratory Medicine Building, Queen Elizabeth University Hospital, Glasgow, UK
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4
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Latypova X, Creadore SG, Dahan-Oliel N, Gustafson AG, Wei-Hung Hwang S, Bedard T, Shazand K, van Bosse HJP, Giampietro PF, Dieterich K. A Genomic Approach to Delineating the Occurrence of Scoliosis in Arthrogryposis Multiplex Congenita. Genes (Basel) 2021; 12:genes12071052. [PMID: 34356068 PMCID: PMC8305424 DOI: 10.3390/genes12071052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/15/2022] Open
Abstract
Arthrogryposis multiplex congenita (AMC) describes a group of conditions characterized by the presence of non-progressive congenital contractures in multiple body areas. Scoliosis, defined as a coronal plane spine curvature of ≥10 degrees as measured radiographically, has been reported to occur in approximately 20% of children with AMC. To identify genes that are associated with both scoliosis as a clinical outcome and AMC, we first queried the DECIPHER database for copy number variations (CNVs). Upon query, we identified only two patients with both AMC and scoliosis (AMC-SC). The first patient contained CNVs in three genes (FBN2, MGF10, and PITX1), while the second case had a CNV in ZC4H2. Looking into small variants, using a combination of Human Phenotype Ontogeny and literature searching, 908 genes linked with scoliosis and 444 genes linked with AMC were identified. From these lists, 227 genes were associated with AMC-SC. Ingenuity Pathway Analysis (IPA) was performed on the final gene list to gain insight into the functional interactions of genes and various categories. To summarize, this group of genes encompasses a diverse group of cellular functions including transcription regulation, transmembrane receptor, growth factor, and ion channels. These results provide a focal point for further research using genomics and animal models to facilitate the identification of prognostic factors and therapeutic targets for AMC.
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Affiliation(s)
- Xenia Latypova
- Grenoble Institut Neurosciences, Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, 38000 Grenoble, France;
| | | | - Noémi Dahan-Oliel
- Shriners Hospitals for Children, Montreal, QC H4A 0A9, Canada;
- School of Physical & Occupational Therapy, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3G 2M1, Canada
| | | | - Steven Wei-Hung Hwang
- Shriners Hospitals for Children, Philadelphia, PA 19140, USA; (S.W.-H.H.); (H.J.P.v.B.)
| | - Tanya Bedard
- Alberta Congenital Anomalies Surveillance System, Alberta Health Services, Edmonton, AB T5J 3E4, Canada;
| | - Kamran Shazand
- Shriners Hospitals for Children Headquarters, Tampa, FL 33607, USA; (S.G.C.); (A.G.G.); (K.S.)
| | | | - Philip F. Giampietro
- Department of Pediatrics, University of Illinois-Chicago, Chicago, IL 60607, USA
- Correspondence: (P.F.G.); (K.D.)
| | - Klaus Dieterich
- Institut of Advanced Biosciences, Université Grenoble Alpes, Inserm, U1209, CHU Grenoble Alpes, 38000 Grenoble, France
- Correspondence: (P.F.G.); (K.D.)
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5
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Wind M, Gogolou A, Manipur I, Granata I, Butler L, Andrews PW, Barbaric I, Ning K, Guarracino MR, Placzek M, Tsakiridis A. Defining the signalling determinants of a posterior ventral spinal cord identity in human neuromesodermal progenitor derivatives. Development 2021; 148:dev194415. [PMID: 33658223 PMCID: PMC8015249 DOI: 10.1242/dev.194415] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 02/23/2021] [Indexed: 12/14/2022]
Abstract
The anteroposterior axial identity of motor neurons (MNs) determines their functionality and vulnerability to neurodegeneration. Thus, it is a crucial parameter in the design of strategies aiming to produce MNs from human pluripotent stem cells (hPSCs) for regenerative medicine/disease modelling applications. However, the in vitro generation of posterior MNs corresponding to the thoracic/lumbosacral spinal cord has been challenging. Although the induction of cells resembling neuromesodermal progenitors (NMPs), the bona fide precursors of the spinal cord, offers a promising solution, the progressive specification of posterior MNs from these cells is not well defined. Here, we determine the signals guiding the transition of human NMP-like cells toward thoracic ventral spinal cord neurectoderm. We show that combined WNT-FGF activities drive a posterior dorsal pre-/early neural state, whereas suppression of TGFβ-BMP signalling pathways promotes a ventral identity and neural commitment. Based on these results, we define an optimised protocol for the generation of thoracic MNs that can efficiently integrate within the neural tube of chick embryos. We expect that our findings will facilitate the comparison of hPSC-derived spinal cord cells of distinct axial identities.
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Affiliation(s)
- Matthew Wind
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
- Department of Biomedical Science and Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
- Department of Neuroscience, Neuroscience Institute, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Antigoni Gogolou
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
- Department of Biomedical Science and Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
- Department of Neuroscience, Neuroscience Institute, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Ichcha Manipur
- Computational and Data Science Laboratory, High Performance Computing and Networking Institute, National Research Council of Italy, Napoli 80131, Italy
| | - Ilaria Granata
- Computational and Data Science Laboratory, High Performance Computing and Networking Institute, National Research Council of Italy, Napoli 80131, Italy
| | - Larissa Butler
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
| | - Peter W Andrews
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
| | - Ivana Barbaric
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
| | - Ke Ning
- Department of Neuroscience, Neuroscience Institute, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
- Sheffield Institute for Translational Neuroscience, Department of Neuroscience, University of Sheffield, Sheffield S10 2HQ, UK
| | | | - Marysia Placzek
- Department of Biomedical Science and Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Anestis Tsakiridis
- Centre for Stem Cell Biology, Department of Biomedical Science, The University of Sheffield, Sheffield S10 2TN, UK
- Department of Biomedical Science and Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
- Department of Neuroscience, Neuroscience Institute, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
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6
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Kloth K, Neu A, Rau I, Hülsemann W, Kutsche K, Volk AE. Severe congenital contractural arachnodactyly caused by biallelic pathogenic variants in FBN2. Eur J Med Genet 2021; 64:104161. [PMID: 33571691 DOI: 10.1016/j.ejmg.2021.104161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/17/2021] [Accepted: 02/04/2021] [Indexed: 11/26/2022]
Abstract
Fibrillin-2, encoded by FBN2, plays an important role in the early process of elastic fiber assembly. To date, heterozygous pathogenic variants in FBN2 have been shown to cause congenital contractural arachnodactyly (CCA; Beals-Hecht syndrome). Classical CCA is characterized by long and slender fingers and toes, ear deformities, joint contractures at birth, clubfeet, muscular hypoplasia and often tall stature. In individuals with a severe CCA form, different cardiovascular or gastrointestinal anomalies have been described. Here, we report on a 15-year-old girl with a severe form of CCA and novel biallelic variants in FBN2. The girl inherited the missense variant c.3563G > T/p.(Gly1188Val) from her unaffected father and the nonsense variant c.6831C > A/p.(Cys2277*) from her healthy mother. We could detect only a small amount of FBN2 transcripts harboring the nonsense variant in leukocyte-derived mRNA from the patient and mother suggesting nonsense-mediated mRNA decay. As the father did not show any clinical signs of CCA we hypothesize the missense variant c.3563G > T to be a hypomorphic allele. Taken together, our data suggests that severe CCA can be inherited in an autosomal-recessive manner by compound heterozygosity of a hypomorphic and a null allele of the FBN2 gene.
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Affiliation(s)
- Katja Kloth
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Axel Neu
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Isabella Rau
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Wiebke Hülsemann
- Department of Handsurgery, Children's Hospital Wilhelmstift, Hamburg, Germany
| | - Kerstin Kutsche
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexander E Volk
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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7
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Dieterich K, Kimber E, Hall JG. Central nervous system involvement in arthrogryposis multiplex congenita: Overview of causes, diagnosis, and care. AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS 2019; 181:345-353. [PMID: 31410997 DOI: 10.1002/ajmg.c.31732] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 07/13/2019] [Accepted: 07/17/2019] [Indexed: 12/14/2022]
Abstract
Arthrogryposis or AMC, arthrogryposis multiplex congenita, is defined as multiple congenital joint contractures in more than two joints and in different body areas. The common cause of all AMC is lack of movement in utero, which in turn can have different causes, one of which is CNS involvement. Intellectual disability/CNS involvement is found in approximately 25% of all AMC. AMC with CNS involvement includes a large number of genetic syndromes. So far, more than 400 genes have been identified as linked to AMC, with and without CNS involvement. A number of neonatally lethal syndromes and syndromes resulting in severe disability due to CNS malfunction belong to this group of syndromes. There are several X-linked disorders with AMC, which are primarily related to intellectual disability. A number of neuromuscular disorders may include AMC and CNS/brain involvement. Careful clinical evaluation by a geneticist and a pediatrician/pediatric neurologist is the first step in making a specific diagnosis. Further investigations may include MRI of the brain and spinal cord, electroencephalogram, blood chemistry for muscle enzymes, other organ investigations (ophtalmology, cardiology, gastrointestinal, and genitourinary systems). Nerve conduction studies, electromyogram, and muscle pathology may be of help when there is associated peripheral nervous system involvement. But most importantly, genetic investigations with targeted or rather whole exome or genome sequencing should be performed. A correct diagnosis is important in planning adequate treatment, in genetic counselling and also for future understanding of pathogenic mechanisms and possible new treatments. A multidiciplinary team is needed both in investigation and treatment.
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Affiliation(s)
- Klaus Dieterich
- Univ. Grenoble Alpes, Inserm, U1216, GIN, Grenoble, France.,CHU Grenoble Alpes, Génétique Médicale, Grenoble, France
| | - Eva Kimber
- Department of Women's and Children's Health, Uppsala University Children's Hospital, Uppsala, Sweden.,Department of Paediatrics, Institute of Clinical Sciences, University of Gothenburg, The Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Judith G Hall
- Professor Emerita, Department of Pediatrics and Medical Genetics, University of British Columbia, Vancouver, Canada
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8
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Logjes RJH, Breugem CC, Van Haaften G, Paes EC, Sperber GH, van den Boogaard MJH, Farlie PG. The ontogeny of Robin sequence. Am J Med Genet A 2018; 176:1349-1368. [PMID: 29696787 DOI: 10.1002/ajmg.a.38718] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 12/17/2017] [Accepted: 03/23/2018] [Indexed: 02/06/2023]
Abstract
The triad of micrognathia, glossoptosis, and concomitant airway obstruction defined as "Robin sequence" (RS) is caused by oropharyngeal developmental events constrained by a reduced stomadeal space. This sequence of abnormal embryonic development also results in an anatomical configuration that might predispose the fetus to a cleft palate. RS is heterogeneous and many different etiologies have been described including syndromic, RS-plus, and isolated forms. For an optimal diagnosis, subsequent treatment and prognosis, a thorough understanding of the embryology and pathogenesis is necessary. This manuscript provides an update about our current understanding of the development of the mandible, tongue, and palate and possible mechanisms involved in the development of RS. Additionally, we provide the reader with an up-to-date summary of the different etiologies of this phenotype and link this to the embryologic, developmental, and genetic mechanisms.
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Affiliation(s)
- Robrecht J H Logjes
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Corstiaan C Breugem
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Gijs Van Haaften
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Emma C Paes
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Geoffrey H Sperber
- Faculty of Medicine and Dentistry, University of Alberta, Alberta, Canada
| | | | - Peter G Farlie
- Royal Children's Hospital, Murdoch Children's Research Institute, Parkville, Australia
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9
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Bartzela TN, Carels C, Maltha JC. Update on 13 Syndromes Affecting Craniofacial and Dental Structures. Front Physiol 2017; 8:1038. [PMID: 29311971 PMCID: PMC5735950 DOI: 10.3389/fphys.2017.01038] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 11/29/2017] [Indexed: 12/12/2022] Open
Abstract
Care of individuals with syndromes affecting craniofacial and dental structures are mostly treated by an interdisciplinary team from early childhood on. In addition to medical and dental specialists that have a vivid interest in these syndromes and for whom these syndromes are of evident interest, experts of scientific background-like molecular and developmental geneticists, but also computational biologists and bioinformaticians-, become more frequently involved in the refined diagnostic and etiological processes of these patients. Early diagnosis is often crucial for the effective treatment of functional and developmental aspects. However, not all syndromes can be clinically identified early, especially in cases of absence of known family history. Moreover, the treatment of these patients is often complicated because of insufficient medical knowledge, and because of the dental and craniofacial developmental variations. The role of the team is crucial for the prevention, proper function, and craniofacial development which is often combined with orthognathic surgery. Although the existing literature does not provide considerable insight into this topic, this descriptive review aims to provide tools for the interdisciplinary team by giving an update on the genetics and general features, and the oral and craniofacial manifestations for early diagnosis. Clinical phenotyping together with genetic data and pathway information will ultimately pave the way for preventive strategies and therapeutic options in the future. This will improve the prognosis for better functional and aesthetic outcome for these patients and lead to a better quality of life, not only for the patients themselves but also for their families. The aim of this review is to promote interdisciplinary interaction and mutual understanding among all specialists involved in the diagnosis and therapeutic guidance of patients with these syndromal conditions in order to provide optimal personalized care in an integrated approach.
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Affiliation(s)
- Theodosia N Bartzela
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité-Universitätsmedizin, Berlin, Germany.,Department of Orthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Carine Carels
- Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Jaap C Maltha
- Department of Orthodontics and Craniofacial Biology, Radboud University Medical Center, Nijmegen, Netherlands
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10
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Lavillaureix A, Heide S, Chantot-Bastaraud S, Marey I, Keren B, Grigorescu R, Jouannic J, Gelot A, Whalen S, Héron D, Siffroi J. Mosaic intragenic deletion of FBN2
and severe congenital contractural arachnodactyly. Clin Genet 2017; 92:556-558. [DOI: 10.1111/cge.13062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 02/04/2023]
Affiliation(s)
- A. Lavillaureix
- Département de Génétique médicale; APHP, Hôpital Armand-Trousseau; Paris France
| | - S. Heide
- Département de Génétique médicale; APHP, Hôpital Armand-Trousseau; Paris France
- Département de Génétique; APHP, Groupe Hospitalier Pitié-Salpêtrière; Paris France
| | | | - I. Marey
- Département de Génétique; APHP, Groupe Hospitalier Pitié-Salpêtrière; Paris France
| | - B. Keren
- Département de Génétique; APHP, Groupe Hospitalier Pitié-Salpêtrière; Paris France
| | - R. Grigorescu
- Département de Génétique médicale; APHP, Hôpital Armand-Trousseau; Paris France
| | - J.M. Jouannic
- Service de Médecine Fœtale; APHP, Hôpital Armand-Trousseau; Paris France
| | - A. Gelot
- Service d'Anatomie Pathologique; APHP, Hôpital Armand-Trousseau; Paris France
- INMED; INSERM U901 Parc Scientifique de Luminy; Marseille France
| | - S. Whalen
- Unité de Génétique clinique; APHP, Hôpital Armand-Trousseau; Paris France
| | - D. Héron
- Département de Génétique; APHP, Groupe Hospitalier Pitié-Salpêtrière; Paris France
- Unité de Génétique clinique; APHP, Hôpital Armand-Trousseau; Paris France
- Groupe de Recherche Clinique (GRC) Déficience intellectuelle et autisme; UPMC Univ Paris 06, UMR_S975, CRICM, Team Molecular Bases; Paris France
| | - J.P. Siffroi
- Département de Génétique médicale; APHP, Hôpital Armand-Trousseau; Paris France
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11
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Ansari M, Rainger J, Hanson IM, Williamson KA, Sharkey F, Harewood L, Sandilands A, Clayton-Smith J, Dollfus H, Bitoun P, Meire F, Fantes J, Franco B, Lorenz B, Taylor DS, Stewart F, Willoughby CE, McEntagart M, Khaw PT, Clericuzio C, Van Maldergem L, Williams D, Newbury-Ecob R, Traboulsi EI, Silva ED, Madlom MM, Goudie DR, Fleck BW, Wieczorek D, Kohlhase J, McTrusty AD, Gardiner C, Yale C, Moore AT, Russell-Eggitt I, Islam L, Lees M, Beales PL, Tuft SJ, Solano JB, Splitt M, Hertz JM, Prescott TE, Shears DJ, Nischal KK, Doco-Fenzy M, Prieur F, Temple IK, Lachlan KL, Damante G, Morrison DA, van Heyningen V, FitzPatrick DR. Genetic Analysis of 'PAX6-Negative' Individuals with Aniridia or Gillespie Syndrome. PLoS One 2016; 11:e0153757. [PMID: 27124303 PMCID: PMC4849793 DOI: 10.1371/journal.pone.0153757] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 04/04/2016] [Indexed: 12/26/2022] Open
Abstract
We report molecular genetic analysis of 42 affected individuals referred with a diagnosis of aniridia who previously screened as negative for intragenic PAX6 mutations. Of these 42, the diagnoses were 31 individuals with aniridia and 11 individuals referred with a diagnosis of Gillespie syndrome (iris hypoplasia, ataxia and mild to moderate developmental delay). Array-based comparative genomic hybridization identified six whole gene deletions: four encompassing PAX6 and two encompassing FOXC1. Six deletions with plausible cis-regulatory effects were identified: five that were 3' (telomeric) to PAX6 and one within a gene desert 5' (telomeric) to PITX2. Sequence analysis of the FOXC1 and PITX2 coding regions identified two plausibly pathogenic de novo FOXC1 missense mutations (p.Pro79Thr and p.Leu101Pro). No intragenic mutations were detected in PITX2. FISH mapping in an individual with Gillespie-like syndrome with an apparently balanced X;11 reciprocal translocation revealed disruption of a gene at each breakpoint: ARHGAP6 on the X chromosome and PHF21A on chromosome 11. In the other individuals with Gillespie syndrome no mutations were identified in either of these genes, or in HCCS which lies close to the Xp breakpoint. Disruption of PHF21A has previously been implicated in the causation of intellectual disability (but not aniridia). Plausibly causative mutations were identified in 15 out of 42 individuals (12/32 aniridia; 3/11 Gillespie syndrome). Fourteen of these mutations presented in the known aniridia genes; PAX6, FOXC1 and PITX2. The large number of individuals in the cohort with no mutation identified suggests greater locus heterogeneity may exist in both isolated and syndromic aniridia than was previously appreciated.
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Affiliation(s)
- Morad Ansari
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Jacqueline Rainger
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Isabel M. Hanson
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Kathleen A. Williamson
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Freddie Sharkey
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Louise Harewood
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Angela Sandilands
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Jill Clayton-Smith
- Faculty of Medical and Human Sciences, Manchester Centre for Genomic Medicine, Institute of Human Development, University of Manchester, Manchester Academic Health Science Centre (MAHSC), Manchester, United Kingdom
| | - Helene Dollfus
- Service de Génétique Médicale, Hôpital de Haute-Pierre, Strasbourg, France
| | - Pierre Bitoun
- Medical Genetics Departments, University Hospital Jean Verdier, Bondy, France
| | - Francoise Meire
- Department of ophthalmopediatrics, Hôpital Universitaire des Enfants Reine Fabiola, Bruxelles, Belgium
| | - Judy Fantes
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - Brunella Franco
- Medical Genetics, Department of Medical Translational Sciences, Federico II University, Naples, Italy
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Birgit Lorenz
- Department of Ophthalmology, Justus-Liebig-University Giessen, Universitaetsklinikum Giessen and Marburg UKGM, Giessen, Germany
| | - David S. Taylor
- Institute of Child Health, University College London, UK and Great Ormond Street Hospital for Children, London, United Kingdom
| | - Fiona Stewart
- Northern Ireland Regional Genetics Service (NIRGS), Belfast City Hospital, Belfast, United Kingdom
| | - Colin E. Willoughby
- Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Meriel McEntagart
- Medical Genetics Unit, St George's University of London, London, United Kingdom
| | - Peng Tee Khaw
- Moorfields Eye Hospital, London, UK and University College London, Institute of Ophthalmology, London, United Kingdom
| | - Carol Clericuzio
- Department of Pediatric Genetics, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, United States of America
| | | | - Denise Williams
- Clinical Genetics Unit, Birmingham Women's Hospital, Birmingham, United Kingdom
| | - Ruth Newbury-Ecob
- Department of Clinical Genetics, University Hospitals, Bristol, United Kingdom
| | - Elias I. Traboulsi
- Center for Genetic Eye Diseases, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, United States of America
| | - Eduardo D. Silva
- Department Ophthalmology, University Hospital of Coimbra, Coimbra, Portugal
| | - Mukhlis M. Madlom
- Children's Hospital, Doncaster Royal Infirmary, Doncaster, United Kingdom
| | - David R. Goudie
- Human Genetics Unit, University of Dundee College of Medicine, Dentistry and Nursing, Ninewells Hospital, Dundee, United Kingdom
| | - Brian W. Fleck
- Department of Ophthalmology, Princess Alexandra Eye Pavilion, Chalmers Street, Edinburgh, United Kingdom
| | - Dagmar Wieczorek
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
- Institut für Humangenetik, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | | | - Alice D. McTrusty
- Department of Life Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
| | - Carol Gardiner
- Clinical Genetics, Southern General Hospital, Glasgow, United Kingdom
| | - Christopher Yale
- Department of Paediatrics and Child Health, Ipswich Hospital, Ipswich, United Kingdom
| | - Anthony T. Moore
- Moorfields Eye Hospital, London, UK and University College London, Institute of Ophthalmology, London, United Kingdom
| | - Isabelle Russell-Eggitt
- Institute of Child Health, University College London, UK and Great Ormond Street Hospital for Children, London, United Kingdom
| | - Lily Islam
- Institute of Child Health, University College London, UK and Great Ormond Street Hospital for Children, London, United Kingdom
| | - Melissa Lees
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street Hospital, London, United Kingdom
| | - Philip L. Beales
- Institute of Child Health, University College London, UK and Great Ormond Street Hospital for Children, London, United Kingdom
| | - Stephen J. Tuft
- Moorfields Eye Hospital, London, UK and University College London, Institute of Ophthalmology, London, United Kingdom
| | - Juan B. Solano
- Ruber International Hospital, Medical Genetics Unit, Mirasierra, Madrid, Spain
| | - Miranda Splitt
- Northern Genetics Service, Institute of Genetic Medicine, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - Jens Michael Hertz
- Department of Clinical Genetics, Odense University Hospital, Odense C, Denmark
| | - Trine E. Prescott
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Deborah J. Shears
- Department of Clinical Genetics, Churchill Hospital, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
| | - Ken K. Nischal
- UPMC Eye Center, Children's Hospital of Pittsburgh of UPMC, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | | | - Fabienne Prieur
- CHU de Saint Etienne, Service de génétique médicale, Saint-Etienne, France
| | - I. Karen Temple
- Academic Unit of Genetic Medicine, Division of Human Genetics, University of Southampton, Southampton, United Kingdom
| | - Katherine L. Lachlan
- Wessex Clinical Genetics Service, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Giuseppe Damante
- Department of Medical and Biological Sciences, University of Udine, Udine, Italy
| | - Danny A. Morrison
- St. Thomas’ Hospital, Westminster Bridge Road, London, United Kingdom
| | - Veronica van Heyningen
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
| | - David R. FitzPatrick
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, United Kingdom
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Gomez-Ospina N, Bernstein JA. Clinical, cytogenetic, and molecular outcomes in a series of 66 patients with Pierre Robin sequence and literature review: 22q11.2 deletion is less common than other chromosomal anomalies. Am J Med Genet A 2016; 170A:870-80. [PMID: 26756138 DOI: 10.1002/ajmg.a.37538] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 12/17/2015] [Indexed: 01/01/2023]
Abstract
Pierre Robin sequence (PRS) is an important craniofacial anomaly that can be seen as an isolated finding or manifestation of multiple syndromes. 22q11.2 deletion and Stickler syndrome are cited as the two most common conditions associated with PRS, but their frequencies are debated. We performed a retrospective study of 66 patients with PRS and reviewed their genetic testing, diagnoses, and clinical findings. The case series is complemented by a comprehensive literature review of the nature and frequency of genetic diagnosis in PRS. In our cohort 65% of patients had associated anomalies; of these, a genetic diagnosis was established in 56%. Stickler syndrome was the most common diagnosis, comprising approximately 11% of all cases, followed by Treacher Collins syndrome (9%). The frequency of 22q11.2 deletion was 1.5%. Chromosome arrays, performed for 72% of idiopathic PRS with associated anomalies, revealed two cases of 18q22→qter deletion, a region not previously reported in association with PRS. A review of the cytogenetic anomalies identified in this population supports an association between the 4q33-qter, 17q24.3, 2q33.1, and 11q23 chromosomal loci and PRS. We found a low frequency of 22q11.2 deletion in PRS, suggesting it is less commonly implicated in this malformation. Our data also indicate a higher frequency of cytogenetic anomalies in PRS patients with associated anomalies, and a potential new link with the 18q22→qter locus. The present findings underscore the utility of chromosomal microarrays in cases of PRS with associated anomalies and suggest that delaying testing for apparently isolated cases should be considered.
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Giorgio E, Robyr D, Spielmann M, Ferrero E, Di Gregorio E, Imperiale D, Vaula G, Stamoulis G, Santoni F, Atzori C, Gasparini L, Ferrera D, Canale C, Guipponi M, Pennacchio LA, Antonarakis SE, Brussino A, Brusco A. A large genomic deletion leads to enhancer adoption by the lamin B1 gene: a second path to autosomal dominant adult-onset demyelinating leukodystrophy (ADLD). Hum Mol Genet 2015; 24:3143-54. [PMID: 25701871 PMCID: PMC4424952 DOI: 10.1093/hmg/ddv065] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 02/13/2015] [Indexed: 01/23/2023] Open
Abstract
Chromosomal rearrangements with duplication of the lamin B1 (LMNB1) gene underlie autosomal dominant adult-onset demyelinating leukodystrophy (ADLD), a rare neurological disorder in which overexpression of LMNB1 causes progressive central nervous system demyelination. However, we previously reported an ADLD family (ADLD-1-TO) without evidence of duplication or other mutation in LMNB1 despite linkage to the LMNB1 locus and lamin B1 overexpression. By custom array-CGH, we further investigated this family and report here that patients carry a large (∼660 kb) heterozygous deletion that begins 66 kb upstream of the LMNB1 promoter. Lamin B1 overexpression was confirmed in further ADLD-1-TO tissues and in a postmortem brain sample, where lamin B1 was increased in the frontal lobe. Through parallel studies, we investigated both loss of genetic material and chromosomal rearrangement as possible causes of LMNB1 overexpression, and found that ADLD-1-TO plausibly results from an enhancer adoption mechanism. The deletion eliminates a genome topological domain boundary, allowing normally forbidden interactions between at least three forebrain-directed enhancers and the LMNB1 promoter, in line with the observed mainly cerebral localization of lamin B1 overexpression and myelin degeneration. This second route to LMNB1 overexpression and ADLD is a new example of the relevance of regulatory landscape modifications in determining Mendelian phenotypes.
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Affiliation(s)
- Elisa Giorgio
- Department of Medical Sciences, University of Torino, via Santena, 19, Torino 10126, Italy
| | - Daniel Robyr
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 1211, Switzerland
| | - Malte Spielmann
- Max Planck Institute for Molecular Genetics, Ihnestr. 63-73, Berlin 14195, Germany
| | - Enza Ferrero
- Department of Medical Sciences, University of Torino, via Santena, 19, Torino 10126, Italy
| | - Eleonora Di Gregorio
- Department of Medical Sciences, University of Torino, via Santena, 19, Torino 10126, Italy Medical Genetics Unit and
| | - Daniele Imperiale
- Centro Regionale Malattie Da Prioni - Domp (ASLTO2), Torino 10144, Italy
| | - Giovanna Vaula
- Department of Neurology, Città della Salute e della Scienza University Hospital, Torino 10126, Italy
| | - Georgios Stamoulis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 1211, Switzerland
| | - Federico Santoni
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 1211, Switzerland
| | - Cristiana Atzori
- Centro Regionale Malattie Da Prioni - Domp (ASLTO2), Torino 10144, Italy
| | | | | | - Claudio Canale
- Department of Nanophysics, Istituto Italiano di Tecnologia, Genoa 16163, Italy and
| | - Michel Guipponi
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 1211, Switzerland
| | - Len A Pennacchio
- Genomics Division, Lawrence Berkeley National Laboratory, MS 84-171, Berkeley, CA 9472, USA
| | - Stylianos E Antonarakis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 1211, Switzerland
| | - Alessandro Brussino
- Department of Medical Sciences, University of Torino, via Santena, 19, Torino 10126, Italy
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, via Santena, 19, Torino 10126, Italy Medical Genetics Unit and
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14
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Basart H, Paes EC, Maas SM, van den Boogaard MJH, van Hagen JM, Breugem CC, Cobben JM, Don Griot JPW, Lachmeijer AMA, Lichtenbelt KD, van Nunen DPF, van der Horst CM, Hennekam RC. Etiology and pathogenesis of robin sequence in a large Dutch cohort. Am J Med Genet A 2015; 167A:1983-92. [DOI: 10.1002/ajmg.a.37154] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/05/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Hanneke Basart
- Department of Pediatrics; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
- Department of Plastic and Reconstructive Surgery; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
| | - Emma C. Paes
- Department of Plastic; Reconstructive and Hand Surgery; University Medical Center Utrecht/ Wilhelmina Children's Hospital; Utrecht Netherlands
| | - Saskia M. Maas
- Department of Pediatrics; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
| | | | | | - Corstiaan C. Breugem
- Department of Plastic; Reconstructive and Hand Surgery; University Medical Center Utrecht/ Wilhelmina Children's Hospital; Utrecht Netherlands
| | - Jan Maarten Cobben
- Department of Pediatrics; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
| | - J. Peter W. Don Griot
- Department of Plastic; Reconstructive and Hand Surgery; VU Medical Center; Amsterdam Netherlands
| | | | - Klaske D. Lichtenbelt
- Department of Clinical Genetics; Utrecht Medical Center/Wilhelmina Children's Hospital; Utrecht Netherlands
| | - Daan P. F. van Nunen
- Department of Plastic; Reconstructive and Hand Surgery; University Medical Center Utrecht/ Wilhelmina Children's Hospital; Utrecht Netherlands
| | - Chantal M. van der Horst
- Department of Plastic and Reconstructive Surgery; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
| | - Raoul C. Hennekam
- Department of Pediatrics; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
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A prenatally ascertained de novo terminal deletion of chromosomal bands 1q43q44 associated with multiple congenital abnormalities in a female fetus. Case Rep Genet 2015; 2015:517678. [PMID: 25722899 PMCID: PMC4334433 DOI: 10.1155/2015/517678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/22/2014] [Accepted: 01/13/2015] [Indexed: 11/17/2022] Open
Abstract
Terminal deletions in the long arm of chromosome 1 result in a postnatally recognizable disorder described as 1q43q44 deletion syndrome. The size of the deletions and the resulting phenotype varies among patients. However, some features are common among patients as the chromosomal regions included in the deletions. In the present case, ultrasonography at 22 weeks of gestation revealed choroid plexus cysts (CPCs) and a single umbilical artery (SUA) and therefore amniocentesis was performed. Chromosomal analysis revealed a possible terminal deletion in 1q and high resolution array CGH confirmed the terminal 1q43q44 deletion and estimated the size to be approximately 8 Mb. Following termination of pregnancy, performance of fetopsy allowed further clinical characterization. We report here a prenatal case with the smallest pure terminal 1q43q44 deletion, that has been molecularly and phenotypically characterized. In addition, to our knowledge this is the first prenatal case reported with 1q13q44 terminal deletion and Pierre-Robin sequence (PRS). Our findings combined with review data from the literature show the complexity of the genetic basis of the associated syndrome.
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16
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Comment on critical region for talipes equinovarus in patients with 5q23 deletions. Eur J Med Genet 2015; 58:243. [PMID: 25676702 DOI: 10.1016/j.ejmg.2015.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 01/31/2015] [Indexed: 11/24/2022]
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