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Ascaso Á, Arnedo M, Puisac B, Latorre-Pellicer A, Del Rincón J, Bueno-Lozano G, Pié J, Ramos FJ. Cornelia de Lange Spectrum. An Pediatr (Barc) 2024; 100:352-362. [PMID: 38735830 DOI: 10.1016/j.anpede.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 03/11/2024] [Indexed: 05/14/2024] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a rare congenital developmental disorder with multisystemic involvement. The clinical presentation is highly variable, but the classic phenotype, characterized by distinctive craniofacial features, pre- and postnatal growth retardation, extremity reduction defects, hirsutism and intellectual disability can be distinguished from the nonclassic phenotype, which is generally milder and more difficult to diagnose. In addition, the clinical features overlap with those of other neurodevelopmental disorders, so the use of consensus clinical criteria and artificial intelligence tools may be helpful in confirming the diagnosis. Pathogenic variants in NIPBL, which encodes a protein related to the cohesin complex, have been identified in more than 60% of patients, and pathogenic variants in other genes related to this complex in another 15%: SMC1A, SMC3, RAD21, and HDAC8. Technical advances in large-scale sequencing have allowed the description of additional genes (BRD4, ANKRD11, MAU2), but the lack of molecular diagnosis in 15% of individuals and the substantial clinical heterogeneity of the syndrome suggest that other genes and mechanisms may be involved. Although there is no curative treatment, there are symptomatic/palliative treatments that paediatricians should be aware of. The main medical complication in classic SCdL is gastro-esophageal reflux (GER), which should be treated early.
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Affiliation(s)
- Ángela Ascaso
- Consulta de Pediatría, Centro de Salud Delicias Sur, Zaragoza, Spain
| | - María Arnedo
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Beatriz Puisac
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Ana Latorre-Pellicer
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Julia Del Rincón
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Gloria Bueno-Lozano
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Juan Pié
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Feliciano J Ramos
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain.
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Ros-Pardo D, Gómez-Puertas P, Marcos-Alcalde Í. STAG2: Computational Analysis of Missense Variants Involved in Disease. Int J Mol Sci 2024; 25:1280. [PMID: 38279279 PMCID: PMC10816197 DOI: 10.3390/ijms25021280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
The human STAG2 protein is an essential component of the cohesin complex involved in cellular processes of gene expression, DNA repair, and genomic integrity. Somatic mutations in the STAG2 sequence have been associated with various types of cancer, while congenital variants have been linked to developmental disorders such as Mullegama-Klein-Martinez syndrome, X-linked holoprosencephaly-13, and Cornelia de Lange syndrome. In the cohesin complex, the direct interaction of STAG2 with DNA and with NIPBL, RAD21, and CTCF proteins has been described. The function of STAG2 within the complex is still unknown, but it is related to its DNA binding capacity and is modulated by its binding to the other three proteins. Every missense variant described for STAG2 is located in regions involved in one of these interactions. In the present work, we model the structure of 12 missense variants described for STAG2, as well as two other variants of NIPBl and two of RAD21 located at STAG2 interaction zone, and then analyze their behavior through molecular dynamic simulations, comparing them with the same simulation of the wild-type protein. This will allow the effects of variants to be rationalized at the atomic level and provide clues as to how STAG2 functions in the cohesin complex.
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Affiliation(s)
| | - Paulino Gómez-Puertas
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), C/Nicolás Cabrera, 1, 28049 Madrid, Spain; (D.R.-P.); (Í.M.-A.)
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Musa RE, Lester KL, Quickstad G, Vardabasso S, Shumate TV, Salcido RT, Ge K, Shpargel KB. BRD4 binds to active cranial neural crest enhancers to regulate RUNX2 activity during osteoblast differentiation. Development 2024; 151:dev202110. [PMID: 38063851 PMCID: PMC10905746 DOI: 10.1242/dev.202110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 11/16/2023] [Indexed: 01/25/2024]
Abstract
Cornelia de Lange syndrome (CdLS) is a congenital disorder featuring facial dysmorphism, postnatal growth deficits, cognitive disability and upper limb abnormalities. CdLS is genetically heterogeneous, with cases arising from mutation of BRD4, a bromodomain protein that binds and reads acetylated histones. In this study, we have modeled CdLS facial pathology through mouse neural crest cell (NCC)-specific mutation of BRD4 to characterize cellular and molecular function in craniofacial development. Mice with BRD4 NCC loss of function died at birth with severe facial hypoplasia, cleft palate, mid-facial clefting and exencephaly. Following migration, BRD4 mutant NCCs initiated RUNX2 expression for differentiation to osteoblast lineages but failed to induce downstream RUNX2 targets required for lineage commitment. BRD4 bound to active enhancers to regulate expression of osteogenic transcription factors and extracellular matrix components integral for bone formation. RUNX2 physically interacts with a C-terminal domain in the long isoform of BRD4 and can co-occupy osteogenic enhancers. This BRD4 association is required for RUNX2 recruitment and appropriate osteoblast differentiation. We conclude that BRD4 controls facial bone development through osteoblast enhancer regulation of the RUNX2 transcriptional program.
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Affiliation(s)
- Rachel E. Musa
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Kaitlyn L. Lester
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Gabrielle Quickstad
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Sara Vardabasso
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Trevor V. Shumate
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Ryan T. Salcido
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
| | - Kai Ge
- Laboratory of Endocrinology and Receptor Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Karl B. Shpargel
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
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Abarca-Barriga HH, Punil Luciano R, Vásquez Sotomayor F. Cornelia de Lange Syndrome Caused by an Intragenic Heterozygous Deletion in RAD21 Detected through Very-High-Resolution Chromosomal Microarray Analysis. Genes (Basel) 2023; 14:2212. [PMID: 38137034 PMCID: PMC10742884 DOI: 10.3390/genes14122212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 12/24/2023] Open
Abstract
Cornelia de Lange syndrome is a genetic and clinically heterogeneous entity, caused by at least five genes. It is characterized by short stature, gestalt facies, microcephaly, neurodevelopmental disorders, and other anomalies. In this report, we present a 13-year-old female patient with microcephaly, cleft palate, polydactyly, short stature, triangular facies, frontal bossing, a bulbous nose, an overfolded helix, limited pronosupination, and an anomalous uterus. No neurodevelopmental disorders were reported. A chromosomal microarray analysis of 6.5 million markers was performed in the proband and her parents. The results showed a de novo heterozygous microdeletion of exons 9-14 within RAD21, which confirmed the diagnosis of Cornelia de Lange syndrome type 4. Our patient did not show any neurologic phenotype (until the time of diagnosis), although neurodevelopmental disorders are frequently present in patients with Cornelia de Lange syndrome type 4, and despite carrying a deletion that was larger than previously reported. Therefore, unknown genetic modifiers or intrinsic mechanisms of RAD21 variants may exist and should be studied.
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Affiliation(s)
- Hugo H. Abarca-Barriga
- Instituto de Investigaciones de Ciencias Biomédicas, Universidad Ricardo Palma, Lima 15039, Peru;
- Servicio de Genética & Errores Innatos del Metabolismo, Instituto Nacional de Salud del Niño Breña, Lima 15083, Peru;
| | - Renzo Punil Luciano
- Servicio de Genética & Errores Innatos del Metabolismo, Instituto Nacional de Salud del Niño Breña, Lima 15083, Peru;
| | - Flor Vásquez Sotomayor
- Instituto de Investigaciones de Ciencias Biomédicas, Universidad Ricardo Palma, Lima 15039, Peru;
- Servicio de Genética & Errores Innatos del Metabolismo, Instituto Nacional de Salud del Niño Breña, Lima 15083, Peru;
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Liu H, Cheng J, Zhuang X, Qi B, Li F, Zhang B. Genomic instability and eye diseases. Adv Ophthalmol Pract Res 2023; 3:103-111. [PMID: 37846358 PMCID: PMC10577848 DOI: 10.1016/j.aopr.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 10/18/2023]
Abstract
Background Genetic information is stored in the bases of double-stranded DNA. However, the integrity of DNA molecules is constantly threatened by various mutagenic agents, including pollutants, ultraviolet light (UV), and medications. To counteract these environmental damages, cells have established multiple mechanisms, such as producing molecules to identify and eliminate damaged DNA, as well as reconstruct the original DNA structures. Failure or insufficiency of these mechanisms can cause genetic instability. However, the role of genome stability in eye diseases is still under-researched, despite extensive study in cancer biology. Main text As the eye is directly exposed to the external environment, the genetic materials of ocular cells are constantly under threat. Some of the proteins essential for DNA damage repair, such as pRb, p53, and RAD21, are also key during the ocular disease development. In this review, we discuss five ocular diseases that are associated with genomic instability. Retinoblastoma and pterygium are linked to abnormal cell cycles. Fuchs' corneal endothelial dystrophy and age-related macular degeneration are related to the accumulation of DNA damage caused by oxidative damage and UV. The mutation of the subunit of the cohesin complex during eye development is linked to sclerocornea. Conclusions Failure of DNA damage detection or repair leads to increased genomic instability. Deciphering the role of genomic instability in ocular diseases can lead to the development of new treatments and strategies, such as protecting vulnerable cells from risk factors or intensifying damage to unwanted cells.
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Affiliation(s)
- Hongyan Liu
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
| | - Jun Cheng
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Xiaoyun Zhuang
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- Department of Ophthalmology, School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Benxiang Qi
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Fenfen Li
- The Eye Hospital of Wenzhou Medical University, Hangzhou, China
| | - Bining Zhang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
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De Falco A, De Brasi D, Della Monica M, Cesario C, Petrocchi S, Novelli A, D'Alterio G, Iolascon A, Capasso M, Piscopo C. A Novel Variant in RAD21 in Cornelia De Lange Syndrome Type 4: Case Report and Bioinformatic Analysis. Genes (Basel) 2023; 14. [PMID: 36672860 DOI: 10.3390/genes14010119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/16/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023] Open
Abstract
Cornelia de Lange Syndrome (CdLS) is a rare genetic disorder that affects many organs. The diagnosis of this condition is primarily clinical and it can be confirmed by molecular analysis of the genes known to cause this disease, although about 30% of CdLS patients are without a genetic diagnosis. Here we report clinical and genetic findings of a patient with CdLS type 4, a syndrome of which the clinical features of only 30 patients have been previously described in the literature. The index patient presented with clinical characteristics previously associated with CdLS type 4 (short nose, thick eyebrow, global development delay, synophrys, microcephaly, weight < 2DS, small hands, height < 2DS). She also presented cardiac anomalies, cleft palate and laryngomalacia, which was never described before. The index patient was diagnosed with a novel de novo RAD21 variant (c.1722_1723delTG, p.Gly575SerfsTer2): segregation analysis, bioinformatic analysis, population data and in silico structural modelling indicate the pathogenicity of the novel variant. This report summarizes previously reported clinical manifestations of CdLS type 4 but also highlights new clinical symptoms, which will aid correct counselling of future CdLS type 4 cases.
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Güneş N, Usluer E, Yüksel Ülker A, Uludağ Alkaya D, Çifçi Sunamak E, Celep Eyüpoğlu F, Oya Uyguner Z, Tüysüz B, Tuysuz B. The Clinical and Molecular Spectrum of Trichorhinophalangeal Syndrome Types I and II in a Turkish Cohort Involving 22 Patients. Turk Arch Pediatr 2023; 58:98-104. [PMID: 36598218 PMCID: PMC9885788 DOI: 10.5152/turkarchpediatr.2022.22223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Trichorhinophalangeal syndrome is a rare autosomal dominant disorder characterized by distinctive craniofacial and skeletal abnormalities. This study aimed to delineate the trichorhinophalangeal syndrome phenotype and to compare the clinical and molecular findings between trichorhinophalangeal syndrome types I and II. MATERIALS AND METHODS A total of 22 trichorhinophalangeal syndrome patients aged 0.9-45 years from 17 families were enrolled. Nineteen patients were diagnosed with trichorhin ophalangeal syndrome I and 3 with trichorhinophalangeal syndrome II. Genetic analyses were made by TRPS1 sequencing and/or chromosomal microarray analyses. RESULTS A novel frameshift variant (c.531_532del), a known missense variant, and whole-gene deletions were the pathogenic TRPS1 variants detected in trichorhinophalangeal syndrome I. Three trichorhinophalangeal syndrome II patients had large deletions with variable breakpoints involving the TRPS1-EXT1 interval. All patients had the typical craniofacial findings of trichorhinophalangeal syndrome such as a pear-shaped nose, long philtrum, and thin upper lip, as well as cone-shaped epiphyses. Sparse hair and eyebrows (20/22), short metacarpals and metatarsals (20/22), and small hands (19/22) were common. While craniofacial and limb abnormalities were similar in trichorhinophalangeal syndrome I and II, 3 of 19 trichorhinophal angeal syndrome I patients had mild, and 2 of 3 trichorhinophalangeal syndrome II patients had severe intellectual disability. Three trichorhinophalangeal syndrome II patients including the patient with the EXT1 deletion beginning from exon 2 had exostoses. In trichorhinophal angeal syndrome II, although microdeletion sizes and facial or skeletal features were not correlated, patients with larger deletions had severe intellectual disability. CONCLUSION This study has expanded the existing knowledge on the phenotype-genotype spectrum in trichorhinophalangeal syndrome. We suggest including the EXT1 gene partially in the minimal critical region for trichorhinophalangeal syndrome II.
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Affiliation(s)
- Nilay Güneş
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey
| | - Esra Usluer
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey
| | - Aylin Yüksel Ülker
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey
| | - Dilek Uludağ Alkaya
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey
| | - Evrim Çifçi Sunamak
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey
| | | | - Zehra Oya Uyguner
- Department of Medical Genetics, İstanbul University, İstanbul Faculty of Medicine, İstanbul, Turkey
| | - Beyhan Tüysüz
- Department of Pediatric Genetics, İstanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Turkey,Corresponding author:Beyhan Tüysüz ✉
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Lucia-campos C, Valenzuela I, Latorre-pellicer A, Ros-pardo D, Gil-salvador M, Arnedo M, Puisac B, Castells N, Plaja A, Tenes A, Cuscó I, Trujillano L, Ramos FJ, Tizzano EF, Gómez-puertas P, Pié J. A Novel Intragenic Duplication in the HDAC8 Gene Underlying a Case of Cornelia de Lange Syndrome. Genes (Basel) 2022; 13:1413. [PMID: 36011323 PMCID: PMC9408140 DOI: 10.3390/genes13081413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/03/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a multisystemic genetic disorder characterized by distinctive facial features, growth retardation, and intellectual disability, as well as various systemic conditions. It is caused by genetic variants in genes related to the cohesin complex. Single-nucleotide variations are the best-known genetic cause of CdLS; however, copy number variants (CNVs) clearly underlie a substantial proportion of cases of the syndrome. The NIPBL gene was thought to be the locus within which clinically relevant CNVs contributed to CdLS. However, in the last few years, pathogenic CNVs have been identified in other genes such as HDAC8, RAD21, and SMC1A. Here, we studied an affected girl presenting with a classic CdLS phenotype heterozygous for a de novo ~32 kbp intragenic duplication affecting exon 10 of HDAC8. Molecular analyses revealed an alteration in the physiological splicing that included a 96 bp insertion between exons 9 and 10 of the main transcript of HDAC8. The aberrant transcript was predicted to generate a truncated protein whose accessibility to the active center was restricted, showing reduced ease of substrate entry into the mutated enzyme. Lastly, we conclude that the duplication is responsible for the patient’s phenotype, highlighting the contribution of CNVs as a molecular cause underlying CdLS.
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Sapir T, Sela-donenfeld D, Karlinski M, Reiner O. Brain Organization and Human Diseases. Cells 2022; 11:1642. [PMID: 35626679 PMCID: PMC9139716 DOI: 10.3390/cells11101642] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 02/06/2023] Open
Abstract
The cortex is a highly organized structure that develops from the caudal regions of the segmented neural tube. Its spatial organization sets the stage for future functional arealization. Here, we suggest using a developmental perspective to describe and understand the etiology of common cortical malformations and their manifestation in the human brain.
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10
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Schedel A, Friedrich UA, Morcos MNF, Wagener R, Mehtonen J, Watrin T, Saitta C, Brozou T, Michler P, Walter C, Försti A, Baksi A, Menzel M, Horak P, Paramasivam N, Fazio G, Autry RJ, Fröhling S, Suttorp M, Gertzen C, Gohlke H, Bhatia S, Wadt K, Schmiegelow K, Dugas M, Richter D, Glimm H, Heinäniemi M, Jessberger R, Cazzaniga G, Borkhardt A, Hauer J, Auer F. Recurrent Germline Variant in RAD21 Predisposes Children to Lymphoblastic Leukemia or Lymphoma. Int J Mol Sci 2022; 23:ijms23095174. [PMID: 35563565 PMCID: PMC9106003 DOI: 10.3390/ijms23095174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/02/2022] [Indexed: 12/04/2022] Open
Abstract
Somatic loss of function mutations in cohesin genes are frequently associated with various cancer types, while cohesin disruption in the germline causes cohesinopathies such as Cornelia-de-Lange syndrome (CdLS). Here, we present the discovery of a recurrent heterozygous RAD21 germline aberration at amino acid position 298 (p.P298S/A) identified in three children with lymphoblastic leukemia or lymphoma in a total dataset of 482 pediatric cancer patients. While RAD21 p.P298S/A did not disrupt the formation of the cohesin complex, it altered RAD21 gene expression, DNA damage response and primary patient fibroblasts showed increased G2/M arrest after irradiation and Mitomycin-C treatment. Subsequent single-cell RNA-sequencing analysis of healthy human bone marrow confirmed the upregulation of distinct cohesin gene patterns during hematopoiesis, highlighting the importance of RAD21 expression within proliferating B- and T-cells. Our clinical and functional data therefore suggest that RAD21 germline variants can predispose to childhood lymphoblastic leukemia or lymphoma without displaying a CdLS phenotype.
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Affiliation(s)
- Anne Schedel
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Ulrike Anne Friedrich
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Mina N. F. Morcos
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
| | - Rabea Wagener
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Juha Mehtonen
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Yliopistonranta 1, FI-70211 Kuopio, Finland; (J.M.); (M.H.)
| | - Titus Watrin
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Claudia Saitta
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
| | - Triantafyllia Brozou
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Pia Michler
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Carolin Walter
- Institute of Medical Informatics, University of Muenster, 48149 Muenster, Germany; (C.W.); (M.D.)
| | - Asta Försti
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany; (A.F.); (R.J.A.)
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany
| | - Arka Baksi
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.B.); (R.J.)
| | - Maria Menzel
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Peter Horak
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (P.H.); (S.F.)
| | - Nagarajan Paramasivam
- Computational Oncology, Molecular Diagnostics Program, National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany;
| | - Grazia Fazio
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
| | - Robert J Autry
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany; (A.F.); (R.J.A.)
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany
| | - Stefan Fröhling
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (P.H.); (S.F.)
| | - Meinolf Suttorp
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Christoph Gertzen
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Duesseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (C.G.); (H.G.)
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Duesseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (C.G.); (H.G.)
- John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Sanil Bhatia
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Karin Wadt
- Department of Clinical Genetics, University Hospital of Copenhagen, Faculty of health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark;
| | - Kjeld Schmiegelow
- Department of Paediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark;
| | - Martin Dugas
- Institute of Medical Informatics, University of Muenster, 48149 Muenster, Germany; (C.W.); (M.D.)
- Institute of Medical Informatics, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Daniela Richter
- Department of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Dresden, 01307 Dresden, Germany; (D.R.); (H.G.)
- German Cancer Consortium (DKTK), 01307 Dresden, Germany
| | - Hanno Glimm
- Department of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Dresden, 01307 Dresden, Germany; (D.R.); (H.G.)
- German Cancer Consortium (DKTK), 01307 Dresden, Germany
- Translational Functional Cancer Genomics, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Merja Heinäniemi
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Yliopistonranta 1, FI-70211 Kuopio, Finland; (J.M.); (M.H.)
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.B.); (R.J.)
| | - Gianni Cazzaniga
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
- Medical Genetics, Department of Medicine and Surgery, University of Milan Bicocca, 20900 Monza, Italy
| | - Arndt Borkhardt
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Julia Hauer
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
- German Cancer Consortium (DKTK), 81675 Munich, Germany
- Correspondence: ; Tel.: +49-(89)-3068-3940
| | - Franziska Auer
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
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11
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Cummings CT, Rowley MJ. Implications of Dosage Deficiencies in CTCF and Cohesin on Genome Organization, Gene Expression, and Human Neurodevelopment. Genes (Basel) 2022; 13:583. [PMID: 35456389 PMCID: PMC9030571 DOI: 10.3390/genes13040583] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/14/2022] [Accepted: 03/24/2022] [Indexed: 02/07/2023] Open
Abstract
Properly organizing DNA within the nucleus is critical to ensure normal downstream nuclear functions. CTCF and cohesin act as major architectural proteins, working in concert to generate thousands of high-intensity chromatin loops. Due to their central role in loop formation, a massive research effort has been dedicated to investigating the mechanism by which CTCF and cohesin create these loops. Recent results lead to questioning the direct impact of CTCF loops on gene expression. Additionally, results of controlled depletion experiments in cell lines has indicated that genome architecture may be somewhat resistant to incomplete deficiencies in CTCF or cohesin. However, heterozygous human genetic deficiencies in CTCF and cohesin have illustrated the importance of their dosage in genome architecture, cellular processes, animal behavior, and disease phenotypes. Thus, the importance of considering CTCF or cohesin levels is especially made clear by these heterozygous germline variants that characterize genetic syndromes, which are increasingly recognized in clinical practice. Defined primarily by developmental delay and intellectual disability, the phenotypes of CTCF and cohesin deficiency illustrate the importance of architectural proteins particularly in neurodevelopment. We discuss the distinct roles of CTCF and cohesin in forming chromatin loops, highlight the major role that dosage of each protein plays in the amplitude of observed effects on gene expression, and contrast these results to heterozygous mutation phenotypes in murine models and clinical patients. Insights highlighted by this comparison have implications for future research into these newly emerging genetic syndromes.
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Affiliation(s)
- Christopher T. Cummings
- Munroe-Meyer Institute, Department of Genetic Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - M. Jordan Rowley
- Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
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12
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Favilla BP, Burssed B, Yamashiro Coelho ÉM, Perez ABA, de Faria Soares MDF, Meloni VA, Bellucco FT, Melaragno MI. Minimal Critical Region and Genes for a Typical Presentation of Langer-Giedion Syndrome. Cytogenet Genome Res 2022; 162:46-54. [PMID: 35290978 DOI: 10.1159/000522034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/17/2022] [Indexed: 11/19/2022] Open
Abstract
Langer-Giedion syndrome (LGS) is caused by a contiguous deletion at 8q23q24, characterized by exostoses, facial, ectodermal, and skeletal anomalies, and, occasionally, intellectual disability. LGS patients have been diagnosed clinically or by routine cytogenetic techniques, hampering the definition of an accurate genotype-phenotype correlation for the syndrome. We report two unrelated patients with 8q23q24 deletions, characterized by cytogenomic techniques, with one of them, to our knowledge, carrying the smallest deletion reported in classic LGS cases. We assessed the pathogenicity of the deletion of genes within the 8q23q24 region and reviewed other molecularly confirmed cases from the literature. Our findings suggest a 3.2-Mb critical region for a typical presentation of the syndrome, emphasizing the contribution of the TRPS1, RAD21, and EXT1 genes' haploinsufficiency, and facial dysmorphisms as well as bone anomalies as the most frequent features among patients with LGS. We also suggest a possible role for the CSMD3 gene, whose deletion seems to contribute to central nervous system anomalies. Since studies performing such correlation for LGS patients are limited, our data contribute to improving the ge-notype-phenotype characterization for LGS patients.
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Affiliation(s)
- Bianca Pereira Favilla
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Bruna Burssed
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | | | - Vera Ayres Meloni
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Maria Isabel Melaragno
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, Brazil
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13
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Trujillano L, Ayerza-Casas A, Puisac B, García GG, Ascaso Á, Latorre-Pellicer A, Arnedo M, Lucia-Campos C, Gil-Salvador M, Kaiser FJ, Ramos FJ, Pié J, Bueno-Lozano G. Subclinical myocardial dysfunction is revealed by speckle tracking echocardiography in patients with Cornelia de Lange syndrome. Int J Cardiovasc Imaging 2022; 38:2291-302. [PMID: 36434327 DOI: 10.1007/s10554-022-02612-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/30/2022] [Indexed: 12/14/2022]
Abstract
This study assesses a possible cardiac dysfunction in individuals with Cornelia de Lange syndrome (CdLS) without diagnosed congenital heart disease (CHD) and its association with other factors. Twenty patients and 20 controls were included in the study divided into three age-dependent groups (A: < 10 yrs, B: 10-20 yrs, C: > 20 yrs), and were evaluated using conventional echocardiography, tissue doppler imaging (TDI), two-dimensional speckle tracking and genetic and biochemical analyses. The left ventricular global longitudinal strain (GLS) was altered (< 15.9%) in 55% of patients, being pathological in the older group (A: 19.7 ± 6.6; B: -17.2 ± 4.7; C: -13.6 ± 2.9). The speckle tracking technique revealed a downward trend in the values of strain, strain rate and velocity, especially in the oldest group. Likewise, the ejection fraction (LVEF) and shortening fraction (LVFS) values, although preserved, also showed a decreased with age (p < 0.05). The analytical markers of cardiovascular risk and cardiac function showed no alterations. The molecular analyses revealed 16 individuals carrying pathogenic variants in NIPBL, two with variants in SMC1A, one with a variant in RAD21 and one with a HDAC8 variant. This is the first systematic approach that demonstrates that individuals with CdLS may present early cardiomyopathy, which can be detected by speckle tracking technique even before the appearance of clinical symptoms and the alteration of other echocardiographic or analytical parameters. For all these reasons, cardiological followup is suggested even in the absence of CHD, especially from adolescence onwards.
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14
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Khattar D, Hopkin RJ. Like Mother, Like Daughter: Feeding Intolerance in the NICU. Neoreviews 2021; 22:e774-e777. [PMID: 34725143 DOI: 10.1542/neo.22-11-e774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Divya Khattar
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Robert J Hopkin
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH
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15
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Latorre-Pellicer A, Gil-Salvador M, Parenti I, Lucia-Campos C, Trujillano L, Marcos-Alcalde I, Arnedo M, Ascaso Á, Ayerza-Casas A, Antoñanzas-Pérez R, Gervasini C, Piccione M, Mariani M, Weber A, Kanber D, Kuechler A, Munteanu M, Khuller K, Bueno-Lozano G, Puisac B, Gómez-Puertas P, Selicorni A, Kaiser FJ, Ramos FJ, Pié J. Clinical relevance of postzygotic mosaicism in Cornelia de Lange syndrome and purifying selection of NIPBL variants in blood. Sci Rep 2021; 11:15459. [PMID: 34326454 PMCID: PMC8322329 DOI: 10.1038/s41598-021-94958-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/19/2021] [Indexed: 11/09/2022] Open
Abstract
Postzygotic mosaicism (PZM) in NIPBL is a strong source of causality for Cornelia de Lange syndrome (CdLS) that can have major clinical implications. Here, we further delineate the role of somatic mosaicism in CdLS by describing a series of 11 unreported patients with mosaic disease-causing variants in NIPBL and performing a retrospective cohort study from a Spanish CdLS diagnostic center. By reviewing the literature and combining our findings with previously published data, we demonstrate a negative selection against somatic deleterious NIPBL variants in blood. Furthermore, the analysis of all reported cases indicates an unusual high prevalence of mosaicism in CdLS, occurring in 13.1% of patients with a positive molecular diagnosis. It is worth noting that most of the affected individuals with mosaicism have a clinical phenotype at least as severe as those with constitutive pathogenic variants. However, the type of genetic change does not vary between germline and somatic events and, even in the presence of mosaicism, missense substitutions are located preferentially within the HEAT repeat domain of NIPBL. In conclusion, the high prevalence of mosaicism in CdLS as well as the disparity in tissue distribution provide a novel orientation for the clinical management and genetic counselling of families.
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Affiliation(s)
- Ana Latorre-Pellicer
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Marta Gil-Salvador
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Ilaria Parenti
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Cristina Lucia-Campos
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Laura Trujillano
- Unit of Clinical Genetics, Service of Paediatrics, Hospital Clínico Universitario Lozano Blesa, Department of Paediatrics, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Iñigo Marcos-Alcalde
- Molecular Modelling Group, Centro de Biología Molecular Severo Ochoa, CBMSO (CSIC-UAM), 28049, Madrid, Spain
- Biosciences Research Institute, School of Experimental Sciences, Universidad Francisco de Vitoria, 28223, Pozuelo de Alarcón, Madrid, Spain
| | - María Arnedo
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Ángela Ascaso
- Unit of Clinical Genetics, Service of Paediatrics, Hospital Clínico Universitario Lozano Blesa, Department of Paediatrics, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Ariadna Ayerza-Casas
- Unit of Paediatric Cardiology, Service of Paediatrics, Hospital Universitario Miguel Servet, 50009, Zaragoza, Spain
| | - Rebeca Antoñanzas-Pérez
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Cristina Gervasini
- Genetica Medica, Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
| | - Maria Piccione
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Milena Mariani
- Centro Fondazione Mariani per il Bambino Fragile, Department of Pediatrics, ASST-Lariana Sant'Anna Hospital, San Fermo della Battaglia (Como), Italy
| | - Axel Weber
- Institute of Human Genetics, Justus-Liebig-University, Giessen, Germany
| | - Deniz Kanber
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Alma Kuechler
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Martin Munteanu
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Katharina Khuller
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Gloria Bueno-Lozano
- Unit of Clinical Genetics, Service of Paediatrics, Hospital Clínico Universitario Lozano Blesa, Department of Paediatrics, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Beatriz Puisac
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain
| | - Paulino Gómez-Puertas
- Molecular Modelling Group, Centro de Biología Molecular Severo Ochoa, CBMSO (CSIC-UAM), 28049, Madrid, Spain
| | - Angelo Selicorni
- Centro Fondazione Mariani per il Bambino Fragile, Department of Pediatrics, ASST-Lariana Sant'Anna Hospital, San Fermo della Battaglia (Como), Italy
| | - Frank J Kaiser
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
- Essener Zentrum für Seltene Erkrankungen (EZSE), Universitätsmedizin Essen, Universitätsklinikum Essen, Essen, Germany
| | - Feliciano J Ramos
- Unit of Clinical Genetics, Service of Paediatrics, Hospital Clínico Universitario Lozano Blesa, Department of Paediatrics, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain.
| | - Juan Pié
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, CIBERER-GCV02 and IIS-Aragon, 50009, Zaragoza, Spain.
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16
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Selicorni A, Mariani M, Lettieri A, Massa V. Cornelia de Lange Syndrome: From a Disease to a Broader Spectrum. Genes (Basel) 2021; 12:1075. [PMID: 34356091 PMCID: PMC8307173 DOI: 10.3390/genes12071075] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a genetic disease that exemplifies the evolution of knowledge in the field of rare genetic disorders. Originally described as a unique pattern of major and minor anomalies, over time this syndrome has been shown to be characterized by a significant variability of clinical expression. By increasing the number of patients described, knowledge of the natural history of the condition has been enriched with the demonstration of the relative frequency of various potential comorbidities. Since 2006, the discovery of CdLS's molecular basis has shown an equally vast genetic heterogeneity linked to the presence of variants in genes encoding for the cohesin complex pathway. The most recent clinical-genetic data led to the classification of the "original syndrome" into a "clinical spectrum" that foresees the presence of classic patients, of non-classic forms, and of conditions that show a modest phenotypic overlapping with the original disease. Finally, the knowledge of the molecular basis of the disease has allowed the development of basic research projects that could lay the foundations for the development of possible innovative pharmacological treatments.
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Affiliation(s)
- Angelo Selicorni
- Mariani Foundation Center for Fragile Child, Pediatric Unit ASST Lariana, 22100 Como, Italy;
| | - Milena Mariani
- Mariani Foundation Center for Fragile Child, Pediatric Unit ASST Lariana, 22100 Como, Italy;
| | - Antonella Lettieri
- Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy; (A.L.); (V.M.)
- CRC Aldo Ravelli for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
| | - Valentina Massa
- Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy; (A.L.); (V.M.)
- CRC Aldo Ravelli for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
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17
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Weiss FD, Calderon L, Wang YF, Georgieva R, Guo Y, Cvetesic N, Kaur M, Dharmalingam G, Krantz ID, Lenhard B, Fisher AG, Merkenschlager M. Neuronal genes deregulated in Cornelia de Lange Syndrome respond to removal and re-expression of cohesin. Nat Commun 2021; 12:2919. [PMID: 34006846 PMCID: PMC8131595 DOI: 10.1038/s41467-021-23141-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 04/07/2021] [Indexed: 12/12/2022] Open
Abstract
Cornelia de Lange Syndrome (CdLS) is a human developmental disorder caused by mutations that compromise the function of cohesin, a major regulator of 3D genome organization. Cognitive impairment is a universal and as yet unexplained feature of CdLS. We characterize the transcriptional profile of cortical neurons from CdLS patients and find deregulation of hundreds of genes enriched for neuronal functions related to synaptic transmission, signalling processes, learning and behaviour. Inducible proteolytic cleavage of cohesin disrupts 3D genome organization and transcriptional control in post-mitotic cortical mouse neurons, demonstrating that cohesin is continuously required for neuronal gene expression. The genes affected by acute depletion of cohesin belong to similar gene ontology classes and show significant numerical overlap with genes deregulated in CdLS. Interestingly, reconstitution of cohesin function largely rescues altered gene expression, including the expression of genes deregulated in CdLS.
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Affiliation(s)
- Felix D Weiss
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- Institute of Innate Immunity, University of Bonn, Bonn, Germany
| | - Lesly Calderon
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- Research Institute of Molecular Pathology, Vienna, Austria
| | - Yi-Fang Wang
- MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Radina Georgieva
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- Computational Regulatory Genomics Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Ya Guo
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Nevena Cvetesic
- Computational Regulatory Genomics Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Maninder Kaur
- Division of Human Genetics, The Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Gopuraja Dharmalingam
- MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Ian D Krantz
- Division of Human Genetics, The Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Boris Lenhard
- Computational Regulatory Genomics Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- Sars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway
| | - Amanda G Fisher
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Matthias Merkenschlager
- Lymphocyte Development Group, Epigenetics Section, MRC London Institute of Medical Sciences, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK.
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18
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Hoskens H, Liu D, Naqvi S, Lee MK, Eller RJ, Indencleef K, White JD, Li J, Larmuseau MHD, Hens G, Wysocka J, Walsh S, Richmond S, Shriver MD, Shaffer JR, Peeters H, Weinberg SM, Claes P. 3D facial phenotyping by biometric sibling matching used in contemporary genomic methodologies. PLoS Genet 2021; 17:e1009528. [PMID: 33983923 PMCID: PMC8118281 DOI: 10.1371/journal.pgen.1009528] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 04/01/2021] [Indexed: 12/12/2022] Open
Abstract
The analysis of contemporary genomic data typically operates on one-dimensional phenotypic measurements (e.g. standing height). Here we report on a data-driven, family-informed strategy to facial phenotyping that searches for biologically relevant traits and reduces multivariate 3D facial shape variability into amendable univariate measurements, while preserving its structurally complex nature. We performed a biometric identification of siblings in a sample of 424 children, defining 1,048 sib-shared facial traits. Subsequent quantification and analyses in an independent European cohort (n = 8,246) demonstrated significant heritability for a subset of traits (0.17-0.53) and highlighted 218 genome-wide significant loci (38 also study-wide) associated with facial variation shared by siblings. These loci showed preferential enrichment for active chromatin marks in cranial neural crest cells and embryonic craniofacial tissues and several regions harbor putative craniofacial genes, thereby enhancing our knowledge on the genetic architecture of normal-range facial variation.
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Affiliation(s)
- Hanne Hoskens
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Medical Imaging Research Center, UZ Leuven, Leuven, Belgium
| | - Dongjing Liu
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Sahin Naqvi
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Myoung Keun Lee
- Department of Oral Biology, Center for Craniofacial and Dental Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Ryan J. Eller
- Department of Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, United States of America
| | - Karlijne Indencleef
- Medical Imaging Research Center, UZ Leuven, Leuven, Belgium
- Department of Electrical Engineering, ESAT/PSI, KU Leuven, Leuven, Belgium
- Department of Otorhinolaryngology, KU Leuven, Leuven, Belgium
| | - Julie D. White
- Department of Anthropology, The Pennsylvania State University, State College, Pennsylvania, United States of America
| | - Jiarui Li
- Medical Imaging Research Center, UZ Leuven, Leuven, Belgium
- Department of Electrical Engineering, ESAT/PSI, KU Leuven, Leuven, Belgium
| | - Maarten H. D. Larmuseau
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Department of Biology, Laboratory of Socioecology and Social Evolution, KU Leuven, Leuven, Belgium
- Histories vzw, Mechelen, Belgium
| | - Greet Hens
- Department of Otorhinolaryngology, KU Leuven, Leuven, Belgium
| | - Joanna Wysocka
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, California, United States of America
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California, United States of America
| | - Susan Walsh
- Department of Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, United States of America
| | - Stephen Richmond
- Applied Clinical Research and Public Health, School of Dentistry, Cardiff University, Cardiff, United Kingdom
| | - Mark D. Shriver
- Department of Anthropology, The Pennsylvania State University, State College, Pennsylvania, United States of America
| | - John R. Shaffer
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Oral Biology, Center for Craniofacial and Dental Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Hilde Peeters
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Seth M. Weinberg
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Oral Biology, Center for Craniofacial and Dental Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Anthropology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Peter Claes
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Medical Imaging Research Center, UZ Leuven, Leuven, Belgium
- Department of Electrical Engineering, ESAT/PSI, KU Leuven, Leuven, Belgium
- Murdoch Children’s Research Institute, Melbourne, Victoria, Australia
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Rodríguez-Palmero A, Boerrigter MM, Gómez-Andrés D, Aldinger KA, Marcos-Alcalde Í, Popp B, Everman DB, Lovgren AK, Arpin S, Bahrambeigi V, Beunders G, Bisgaard AM, Bjerregaard VA, Bruel AL, Challman TD, Cogné B, Coubes C, de Man SA, Denommé-Pichon AS, Dye TJ, Elmslie F, Feuk L, García-Miñaúr S, Gertler T, Giorgio E, Gruchy N, Haack TB, Haldeman-Englert CR, Haukanes BI, Hoyer J, Hurst ACE, Isidor B, Soller MJ, Kushary S, Kvarnung M, Landau YE, Leppig KA, Lindstrand A, Kleinendorst L, MacKenzie A, Mandrile G, Mendelsohn BA, Moghadasi S, Morton JE, Moutton S, Müller AJ, O'Leary M, Pacio-Míguez M, Palomares-Bralo M, Parikh S, Pfundt R, Pode-Shakked B, Rauch A, Repnikova E, Revah-Politi A, Ross MJ, Ruivenkamp CAL, Sarrazin E, Savatt JM, Schlüter A, Schönewolf-Greulich B, Shad Z, Shaw-Smith C, Shieh JT, Shohat M, Spranger S, Thiese H, Mau-Them FT, van Bon B, van de Burgt I, van de Laar IMBH, van Drie E, van Haelst MM, van Ravenswaaij-Arts CM, Verdura E, Vitobello A, Waldmüller S, Whiting S, Zweier C, Prada CE, de Vries BBA, Dobyns WB, Reiter SF, Gómez-Puertas P, Pujol A, Tümer Z. DLG4-related synaptopathy: a new rare brain disorder. Genet Med 2021; 23:888-99. [PMID: 33597769 DOI: 10.1038/s41436-020-01075-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Postsynaptic density protein-95 (PSD-95), encoded by DLG4, regulates excitatory synaptic function in the brain. Here we present the clinical and genetic features of 53 patients (42 previously unpublished) with DLG4 variants. METHODS The clinical and genetic information were collected through GeneMatcher collaboration. All the individuals were investigated by local clinicians and the gene variants were identified by clinical exome/genome sequencing. RESULTS The clinical picture was predominated by early onset global developmental delay, intellectual disability, autism spectrum disorder, and attention deficit-hyperactivity disorder, all of which point to a brain disorder. Marfanoid habitus, which was previously suggested to be a characteristic feature of DLG4-related phenotypes, was found in only nine individuals and despite some overlapping features, a distinct facial dysmorphism could not be established. Of the 45 different DLG4 variants, 39 were predicted to lead to loss of protein function and the majority occurred de novo (four with unknown origin). The six missense variants identified were suggested to lead to structural or functional changes by protein modeling studies. CONCLUSION The present study shows that clinical manifestations associated with DLG4 overlap with those found in other neurodevelopmental disorders of synaptic dysfunction; thus, we designate this group of disorders as DLG4-related synaptopathy.
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Panaitescu AM, Duta S, Gica N, Botezatu R, Nedelea F, Peltecu G, Veduta A. A Broader Perspective on the Prenatal Diagnosis of Cornelia de Lange Syndrome: Review of the Literature and Case Presentation. Diagnostics (Basel) 2021; 11:diagnostics11010142. [PMID: 33478103 PMCID: PMC7835910 DOI: 10.3390/diagnostics11010142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 12/20/2022] Open
Abstract
Cornelia de Lange syndrome (CDLS) is caused by pathogenic variants in genes which are structural or regulatory components of the cohesin complex. The classical Cornelia de Lange (CDLS) phenotype is characterized by distinctive facial features, growth retardation, upper limb reduction defects, hirsutism, and developmental delay. Non-classical phenotypes make this condition heterogeneous. Although CDLS is a heterogeneous clinical and genetic condition, clear diagnostic criteria have been described by specialist consensus. Many of these criteria refer to features that can be seen on prenatal ultrasound. The aim of this paper is twofold: to present the ultrasound findings in fetuses affected by CDLS syndrome; to discuss the recent advances and the limitations in the ultrasound and genetic prenatal diagnosis of CDLS. Our review aims to offer, apart from the data needed to understand the genetics and the prenatal presentation of the disease, a joint perspective of the two specialists involved in the prenatal management of this pathology: the fetal medicine specialist and the geneticist. To better illustrate the data presented, we also include a representative clinical case.
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Affiliation(s)
- Anca Maria Panaitescu
- Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (N.G.); (R.B.); (F.N.); (G.P.)
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
- Correspondence: ; Tel.: +40-23188930
| | - Simona Duta
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
| | - Nicolae Gica
- Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (N.G.); (R.B.); (F.N.); (G.P.)
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
| | - Radu Botezatu
- Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (N.G.); (R.B.); (F.N.); (G.P.)
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
| | - Florina Nedelea
- Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (N.G.); (R.B.); (F.N.); (G.P.)
- Department of Genetics, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Gheorghe Peltecu
- Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (N.G.); (R.B.); (F.N.); (G.P.)
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
| | - Alina Veduta
- Filantropia Clinical Hospital, 011171 Bucharest, Romania; (S.D.); (A.V.)
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21
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Matute-llorente Á, Ascaso Á, Latorre-pellicer A, Puisac B, Trujillano L, Llorente E, Puente-lanzarote JJ, Ayerza-casas A, Arnedo M, Moreno LA, Ramos F, Pié J, Casajus JA, Bueno-lozano G. Targeted Gene Sequencing, Bone Health, and Body Composition in Cornelia de Lange Syndrome. Applied Sciences 2021; 11:710. [DOI: 10.3390/app11020710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aim of this study was to evaluate bone health and body composition by dual-energy X-ray absorptiometry (DXA) in individuals with Cornelia de Lange Syndrome (CdLS). Overall, nine individuals with CdLS (five females, all Caucasian, aged 5–38 years) were assessed. Total body less head (TBLH) and lumbar spine (LS) scans were performed, and bone serum biomarkers were determined. Molecular analyses were carried out and clinical scores and skeletal features were assessed. Based on deep sequencing of a custom target gene panel, it was discovered that eight of the nine CdLS patients had potentially causative genetic variants in NIPBL. Fat and lean mass indices (FMI and LMI) were 3.4–11.1 and 8.4–17.0 kg/m2, respectively. For TBLH areal bone mineral density (aBMD), after adjusting for height for age Z-score of children and adolescents, two individuals (an adolescent and an adult) had low BMD (aBMD Z-scores less than –2.0 SD). Calcium, phosphorus, 25-OH-vitamin D, parathyroid hormone, and alkaline phosphatase levels were 2.08–2.49 nmol/L, 2.10–3.75 nmol/L, 39.94–78.37 nmol/L, 23.4–80.3 pg/mL, and 43–203 IU/L, respectively. Individuals with CdLS might have normal adiposity and low levels of lean mass measured with DXA. Bone health in this population seems to be less of a concern during childhood and adolescence. However, they might be at risk for impaired bone health due to low aBMD in adulthood.
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Abstract
RAD21 (also known as KIAA0078, NXP1, HR21, Mcd1, Scc1, and hereafter called RAD21), an essential gene, encodes a DNA double-strand break (DSB) repair protein that is evolutionarily conserved in all eukaryotes from budding yeast to humans. RAD21 protein is a structural component of the highly conserved cohesin complex consisting of RAD21, SMC1a, SMC3, and SCC3 [STAG1 (SA1) and STAG2 (SA2) in metazoans] proteins, involved in sister chromatid cohesion. This function is essential for proper chromosome segregation, post-replicative DNA repair, and prevention of inappropriate recombination between repetitive regions. In interphase, cohesin also functions in the control of gene expression by binding to numerous sites within the genome. In addition to playing roles in the normal cell cycle and DNA DSB repair, RAD21 is also linked to the apoptotic pathways. Germline heterozygous or homozygous missense mutations in RAD21 have been associated with human genetic disorders, including developmental diseases such as Cornelia de Lange syndrome (CdLS) and chronic intestinal pseudo-obstruction (CIPO) called Mungan syndrome, respectively, and collectively termed as cohesinopathies. Somatic mutations and amplification of the RAD21 have also been widely reported in both human solid and hematopoietic tumors. Considering the role of RAD21 in a broad range of cellular processes that are hot spots in neoplasm, it is not surprising that the deregulation of RAD21 has been increasingly evident in human cancers. Herein, we review the biology of RAD21 and the cellular processes that this important protein regulates and discuss the significance of RAD21 deregulation in cancer and cohesinopathies.
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Affiliation(s)
- Haizi Cheng
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, United States; Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Nenggang Zhang
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, United States; Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Debananda Pati
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, United States; Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States; Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States.
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