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Yang J, Yu C, Lyn N, Liu L, Li D, Shang Q. Clinical analysis of Gabriele-de Vries caused by YY1 mutations and literature review. Mol Genet Genomic Med 2024; 12:e2281. [PMID: 37658636 PMCID: PMC10767417 DOI: 10.1002/mgg3.2281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/29/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023] Open
Abstract
BACKGROUND Gabriele-de Vries syndrome is a rare autosomal dominant genetic disease characterized by global development delay/intellectual disability, delayed language development, feeding difficulties, and distinctive facial dysmorphism. It is caused by pathogenic variants in YY1. METHODS The current report describes a female patient with motor delay and a facial dysmorphism phenotype. We identified pathogenic mutations in the patient by whole-exome sequencing and confirmed them by Sanger sequencing. RESULTS A novel heterozygous frameshift mutation NM_003403.5:c.458_476del (p. V153fs*97) in the YY1 gene was detected in the proband. Finally, we provide a case-based review of the clinical features associated with Gabriele-de Vries syndrome. A total of 28 patients with genetic abnormalities and clinical phenotypes have been reported in the literature thus far. CONCLUSIONS The mutation site is reported for the first time, and its discovery would expand the mutation spectrum of the YY1 gene. The main clinical manifestations of Gabriele-de Vries syndrome are developmental delay/intellectual disability, craniofacial dysplasia, intrauterine growth delay, low birth weight, feeding difficulties, and rare congenital malformations. Genetic tests are crucial techniques for its diagnosis because of its nonspecific clinical manifestations.
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Affiliation(s)
- Jingjing Yang
- Department of Pediatric Rehabilitation MedicineChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
| | - Chaonan Yu
- Department of Pediatric Rehabilitation MedicineChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
| | - Nan Lyn
- Department of Pediatric Rehabilitation MedicineChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
| | - Lei Liu
- Henan Neurodevelopment Engineering Research Center for Children, Henan Key Laboratory of Children's Genetics and Metabolic DiseasesChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
| | - Dongxiao Li
- Henan Neurodevelopment Engineering Research Center for Children, Henan Key Laboratory of Children's Genetics and Metabolic DiseasesChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
| | - Qing Shang
- Department of Pediatric Rehabilitation MedicineChildren's Hospital Affiliated to Zhengzhou UniversityZhengzhouChina
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2
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Dos Santos SR, Piergiorge RM, Rocha J, Abdala BB, Gonçalves AP, Pimentel MMG, Santos-Rebouças CB. A de novo YY1 missense variant expanding the Gabriele-de Vries syndrome phenotype and affecting X-chromosome inactivation. Metab Brain Dis 2022; 37:2431-2440. [PMID: 35829845 DOI: 10.1007/s11011-022-01024-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/04/2022] [Indexed: 11/30/2022]
Abstract
Yin and Yang 1 gene (YY1; MIM#600,013) is recognized as a dual transcriptional activating and repressing factor, RNA-binding protein, and 3D chromatin regulator, with multi roles in neurodevelopmental and maintenance pathways. YY1 haploinsufficiency caused either by heterozygous sequence variants or deletions involving the whole gene has been recently associated with Gabriele-de Vries syndrome (GADEVS), a rare congenital autosomal dominant condition, leading to intellectual disability (ID) and multiple physical/behavioural abnormalities. Herein, we describe clinical and molecular findings from a Brazilian female harbouring a de novo missense pathogenic variant in YY1 gene (NM_003403.5:c.1106A > G; p.Asn369Ser) found by whole exome sequencing with potential implications for protein structure and function. Undescribed or uncommon clinical features in this patient included non-febrile seizures, severe scoliosis, hearing impairment, and chorioretinitis. Further bioinformatics analyses using YY1-other protein interaction networks reinforced the involvement of YY1 interactors in such phenotypes, in exception of chorioretinitis. Moreover, X-chromosome inactivation (XCI) skewing was evidenced in the patient and attributed to the haploinsufficiency of YY1, which direct and indirectly interacts with numerous XCI key regulators. Besides expanding the mutational and phenotype spectrum of GADEVS, our results highlight the role of YY1 as an essential autosomal regulator of XCI epigenetic process.
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Affiliation(s)
- Suely Rodrigues Dos Santos
- Gaffrée and Guinle University Hospital, Federal University of Rio de Janeiro State, Rio de Janeiro, Brazil
| | - Rafael Mina Piergiorge
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jady Rocha
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bianca Barbosa Abdala
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andressa Pereira Gonçalves
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Márcia Mattos Gonçalves Pimentel
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cíntia Barros Santos-Rebouças
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
- Departamento de Genética, Instituto de Biologia Roberto Alcantara Gomes, Universidade Do Estado Do Rio de Janeiro, Rua São Francisco Xavier, 524, PHLC - sala 501F, Maracanã 20550-013, Rio de Janeiro, RJ, Brazil.
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3
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Dual Role of YY1 in HPV Life Cycle and Cervical Cancer Development. Int J Mol Sci 2022; 23:ijms23073453. [PMID: 35408813 PMCID: PMC8998550 DOI: 10.3390/ijms23073453] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 01/27/2023] Open
Abstract
Human papillomaviruses (HPVs) are considered to be key etiological agents responsible for the induction and development of cervical cancer. However, it has been suggested that HPV infection alone may not be sufficient to promote cervical carcinogenesis, and other unknown factors might be required to establish the disease. One of the suggested proteins whose deregulation has been linked with oncogenesis is transcription factor Yin Yang 1 (YY1). YY1 is a multifunctional protein that is involved not only in the regulation of gene transcription and protein modification, but can also control important cell signaling pathways, such as cell growth, development, differentiation, and apoptosis. Vital functions of YY1 also indicate that the protein could be involved in tumorigenesis. The overexpression of this protein has been observed in different tumors, and its level has been correlated with poor prognoses of many types of cancers. YY1 can also regulate the transcription of viral genes. It has been documented that YY1 can bind to the HPV long control region and regulate the expression of viral oncogenes E6 and E7; however, its role in the HPV life cycle and cervical cancer development is different. In this review, we explore the role of YY1 in regulating the expression of cellular and viral genes and subsequently investigate how these changes inadvertently contribute toward the development of cervical malignancy.
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4
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Khamirani HJ, Zoghi S, Namdar ZM, Kamal N, Dianatpour M, Tabei SMB, Mohammadi S, Dehghanian F, Farbod Z, Dastgheib SA. Clinical features of patients with Yin Yang 1 deficiency causing Gabriele-de Vries syndrome: A new case and review of the literature. Ann Hum Genet 2021; 86:52-62. [PMID: 34729769 DOI: 10.1111/ahg.12448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/08/2021] [Accepted: 10/11/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Gabriele-de Vries syndrome is a rare autosomal dominant genetic disease caused by de novo pathogenic variants in YY1. In this study, we report a 10-year-old boy with a de novo novel pathogenic variant in YY1, the first Iranian patient with Gabriele-de Vries Syndrome. METHODS The novel de novo pathogenic variant detected in this study (NM_003403:c.690delA, p.Glu231Ilefs*25) was identified by whole-exome sequencing and confirmed by Sanger sequencing. RESULTS The proband presented with delayed motor and speech development, ataxia, abnormal gait, autistic behavior, brain atrophy, and severe learning disability. Finally, we provide a case-based review of the clinical features associated with Gabriele-de Vries Syndrome. Thus far, merely 13 Gabriele-de Vries Syndrome patients have been reported in the literature. CONCLUSION The investigations for a suspected case of Gabriele-de Vries Syndrome must involve molecular diagnosis of the disease and its underlying genetic defect because the clinical investigations are generally variable and nonspecific.
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Affiliation(s)
- Hossein Jafari Khamirani
- Department of Medical Genetics, Shiraz University of Medical Sciences, Shiraz, Iran.,Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sina Zoghi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Neda Kamal
- Department of Medical Genetics, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Dianatpour
- Department of Medical Genetics, Shiraz University of Medical Sciences, Shiraz, Iran.,Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Mohammad Bagher Tabei
- Department of Medical Genetics, Shiraz University of Medical Sciences, Shiraz, Iran.,Maternal-Fetal Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sanaz Mohammadi
- Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Dehghanian
- Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Farbod
- Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
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5
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Malaquias MJ, Damásio J, Mendes A, Freixo JP, Magalhães M. A Case of YY1-Related Isolated Dystonia with Severe Oromandibular Involvement. Mov Disord 2021; 36:2705-2706. [PMID: 34411328 DOI: 10.1002/mds.28771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 12/18/2022] Open
Affiliation(s)
| | - Joana Damásio
- Neurology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.,Center for Predictive and Preventive Genetics (CGPP), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
| | - Alexandre Mendes
- Neurology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - João Parente Freixo
- Center for Predictive and Preventive Genetics (CGPP), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
| | - Marina Magalhães
- Neurology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal
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6
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Dingemans AJM, Stremmelaar DE, Vissers LELM, Jansen S, Nabais Sá MJ, van Remortele A, Jonis N, Truijen K, van de Ven S, Ewals J, Verbruggen M, Koolen DA, Brunner HG, Eichler EE, Gecz J, de Vries BBA. Human disease genes website series: An international, open and dynamic library for up-to-date clinical information. Am J Med Genet A 2021; 185:1039-1046. [PMID: 33439542 PMCID: PMC7986414 DOI: 10.1002/ajmg.a.62057] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/11/2020] [Accepted: 12/12/2020] [Indexed: 12/11/2022]
Abstract
Since the introduction of next‐generation sequencing, an increasing number of disorders have been discovered to have genetic etiology. To address diverse clinical questions and coordinate research activities that arise with the identification of these rare disorders, we developed the Human Disease Genes website series (HDG website series): an international digital library that records detailed information on the clinical phenotype of novel genetic variants in the human genome (https://humandiseasegenes.info/). Each gene website is moderated by a dedicated team of clinicians and researchers, focused on specific genes, and provides up‐to‐date—including unpublished—clinical information. The HDG website series is expanding rapidly with 424 genes currently adopted by 325 moderators from across the globe. On average, a gene website has detailed phenotypic information of 14.4 patients. There are multiple examples of added value, one being the ARID1B gene website, which was recently utilized in research to collect clinical information of 81 new patients. Additionally, several gene websites have more data available than currently published in the literature. In conclusion, the HDG website series provides an easily accessible, open and up‐to‐date clinical data resource for patients with pathogenic variants of individual genes. This is a valuable resource not only for clinicians dealing with rare genetic disorders such as developmental delay and autism, but other professionals working in diagnostics and basic research. Since the HDG website series is a dynamic platform, its data also include the phenotype of yet unpublished patients curated by professionals providing higher quality clinical detail to improve management of these rare disorders.
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Affiliation(s)
- Alexander J M Dingemans
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Diante E Stremmelaar
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Lisenka E L M Vissers
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Sandra Jansen
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Maria J Nabais Sá
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Angela van Remortele
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Noraly Jonis
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Kim Truijen
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Sam van de Ven
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Jeroen Ewals
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Michel Verbruggen
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - David A Koolen
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Han G Brunner
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
| | - Evan E Eichler
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington, USA.,Howard Hughes Medical Institute, University of Washington, Seattle, Washington, USA
| | - Jozef Gecz
- Adelaide Medical School and the Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Bert B A de Vries
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud university medical center, Nijmegen, The Netherlands
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7
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Tan L, Li Y, Liu F, Huang Y, Luo S, Zhao P, Gu W, Lin J, Zhou A, He X. A 9-month-old Chinese patient with Gabriele-de Vries syndrome due to novel germline mutation in the YY1 gene. Mol Genet Genomic Med 2020; 9:e1582. [PMID: 33369188 PMCID: PMC8077090 DOI: 10.1002/mgg3.1582] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/12/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Gabriele-de Vries syndrome (GADEVS), also known as YY1 haploinsufficiency syndrome, is a very rare autosomal dominant neurodevelopmental disorder (NDD) due to YY1 mutation characterized by mild-to-profound developmental delay (DD)/intellectual disability (ID), a wide spectrum of functional and morphologic abnormalities, and intrauterine growth restriction or low birth weight and feeding difficulties are common in the patients. However, NDDs, such as language development disorder and ID, could hardly be assessed in patients younger than 2 years old. METHODS We describe a 9-month-old female with DD, failure to thrive, and facial dysmorphism. Genetic analysis was conducted by whole exome sequencing (WES) and confirmed by Sanger sequencing. RESULTS In addition to DD and dysmorphic facial features, this patient had urinary tract infection, acute pyelonephritis, bilateral vesicoureteral reflux (grade III), gastroesophageal reflux, and malnutrition. She was found to have foramen ovale or atrial septal defect, and enlarged left lateral ventricle in the brain. After performing WES, a novel heterozygous mutation NM_003403.5:c.1124G>A, p.Arg375Gln in the YY1 gene was identified. CONCLUSION Our findings suggest that genetic tests are critical technique for diagnosis of GADEVS, especially in patients with early-childhood, unexplained developmental or growth disorders, thus, the prevalence of GADEVS may be underestimated. The clinical features and identified YY1 mutation in our patient expand the spectra of phenotypes and genotypes of GADEVS, respectively.
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Affiliation(s)
- Li Tan
- Precision Medical Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Ying Li
- Radiology Department, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Fan Liu
- Radiology Department, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yufeng Huang
- Precision Medical Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Sukun Luo
- Precision Medical Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Peiwei Zhao
- Precision Medical Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Weiyue Gu
- Chigene (Beijing) Translational Medical Research Center Co., Ltd., Beijing, P.R. China
| | - Jun Lin
- Rehabilitation Department, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Aifen Zhou
- Prenatal Diagnosis Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Xuelian He
- Precision Medical Center, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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8
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Verheul TCJ, van Hijfte L, Perenthaler E, Barakat TS. The Why of YY1: Mechanisms of Transcriptional Regulation by Yin Yang 1. Front Cell Dev Biol 2020; 8:592164. [PMID: 33102493 PMCID: PMC7554316 DOI: 10.3389/fcell.2020.592164] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/09/2020] [Indexed: 12/11/2022] Open
Abstract
First described in 1991, Yin Yang 1 (YY1) is a transcription factor that is ubiquitously expressed throughout mammalian cells. It regulates both transcriptional activation and repression, in a seemingly context-dependent manner. YY1 has a well-established role in the development of the central nervous system, where it is involved in neurogenesis and maintenance of homeostasis in the developing brain. In neurodevelopmental and neurodegenerative disease, the crucial role of YY1 in cellular processes in the central nervous system is further underscored. In this mini-review, we discuss the various mechanisms leading to the transcriptional activating and repressing roles of YY1, including its role as a traditional transcription factor, its interactions with cofactors and chromatin modifiers, the role of YY1 in the non-coding genome and 3D chromatin organization and the possible implications of the phase-separation mechanism on YY1 function. We provide examples on how these processes can be involved in normal development and how alterations can lead to various diseases.
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Affiliation(s)
- Thijs C J Verheul
- Department of Cell Biology, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Levi van Hijfte
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Elena Perenthaler
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
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9
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Carminho-Rodrigues MT, Steel D, Sousa SB, Brandt G, Guipponi M, Laurent S, Fokstuen S, Moren A, Zacharia A, Dirren E, Oliveira R, Kurian MA, Burkhard PR, Bally JF. Complex movement disorder in a patient with heterozygous YY1 mutation (Gabriele-de Vries syndrome). Am J Med Genet A 2020; 182:2129-2132. [PMID: 32627382 DOI: 10.1002/ajmg.a.61731] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/14/2020] [Accepted: 05/28/2020] [Indexed: 12/12/2022]
Abstract
YY1 mutations cause Gabriele-de Vries syndrome, a recently described condition involving cognitive impairment, facial dysmorphism and intrauterine growth restriction. Movement disorders were reported in 5/10 cases of the original series, but no detailed description was provided. Here we present a 21-year-old woman with a mild intellectual deficit, facial dysmorphism and a complex movement disorder including an action tremor, cerebellar ataxia, dystonia, and partial ocular apraxia as the presenting and most striking feature. Whole-exome sequencing revealed a novel heterozygous de novo mutation in YY1 [NM: 003403.4 (YY1): c.907 T > C; p.(Cys303Arg)], classified as pathogenic according to the ACMG guidelines.
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Affiliation(s)
| | - Dora Steel
- Departement of Neurosciences, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Sergio B Sousa
- Medical Genetics Unit, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Gregor Brandt
- Neurologische Klinik, Klinik und Poliklinik des Universitätsklinikums Würzburg, Würzburg, Germany
| | - Michel Guipponi
- Department of Genetics, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Sacha Laurent
- Department of Genetics, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Siv Fokstuen
- Department of Genetics, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Aurea Moren
- Department of Neurology, Movement Disorders Unit, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - André Zacharia
- Department of Neurology, Movement Disorders Unit, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Elisabeth Dirren
- Department of Neurology, Movement Disorders Unit, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Renata Oliveira
- Medical Genetics Unit, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal.,Medical Genetics Unit, Centro Hospitalar e Universitário de São João, Porto, Portugal
| | - Manju A Kurian
- Departement of Neurosciences, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Pierre R Burkhard
- Department of Neurology, Movement Disorders Unit, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
| | - Julien F Bally
- Department of Neurology, Movement Disorders Unit, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland
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