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Verma S, Dalabehera S, Maurya R, Singh D, Prasher B, Pandey R, Bapat S, Ramalingam S, Sachidanandan C. Generation of an induced pluripotent stem cell line IGIBi18-A from an Indian patient with Rubinstein Taybi Syndrome. Stem Cell Res 2024; 78:103456. [PMID: 38820863 DOI: 10.1016/j.scr.2024.103456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/15/2024] [Accepted: 05/27/2024] [Indexed: 06/02/2024] Open
Abstract
Rubinstein Taybi Syndrome (RSTS) is a rare genetic disorder which is caused by mutations in either CREBBP or EP300. RSTS with mutations in CREBBP is known as RSTS-1. We have generated an induced pluripotent stem cell (iPSC) line, IGIBi018-A from an Indian RSTS-patient using the episomal reprogramming method. The CREBBP gene in the patient harbours a nonsense mutation at position NM_004380.3(c.6876 del C). IGIBi018-A iPSC showed expression of pluripotent stem cell markers, has a normal karyotype and could be differentiated into three germ layers. This iPSC line will help to explore the role of CREBBP in RSTS associated developmental defects.
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Affiliation(s)
- Shweta Verma
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sujit Dalabehera
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ranjeet Maurya
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dayanidhi Singh
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Bhavana Prasher
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajesh Pandey
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sharmila Bapat
- National Centre for Cell Science, NCCS Complex, Pune University Complex, Ganeshkhind, Pune, Maharashtra 411007, India
| | - Sivaprakash Ramalingam
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Chetana Sachidanandan
- CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Maddhesiya J, Mohapatra B. Understanding the Genetic and Non-Genetic Interconnections in the Aetiology of Syndromic Congenital Heart Disease: An Updated Review: Part 2. Curr Cardiol Rep 2024; 26:167-178. [PMID: 38358608 DOI: 10.1007/s11886-024-02020-x] [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] [Accepted: 01/08/2024] [Indexed: 02/16/2024]
Abstract
PURPOSE OF REVIEW Approximately 30% of syndromic cases diagnosed with CHD, which lure us to further investigate the molecular and clinical challenges behind syndromic CHD (sCHD). The aetiology of sCHD in a majority of cases remains enigmatic due to involvement of multiple factors, namely genetic, epigenetic and environmental modifiable risk factors for the development of the disease. Here, we aim to update the role of genetic contributors including chromosomal abnormalities, copy number variations (CNVs) and single gene mutations in cardiac specific genes, maternal lifestyle conditions, environmental exposures and epigenetic modifiers in causing CHD in different genetic syndromes. RECENT FINDINGS The exact aetiology of sCHD is still unknown. With the advancement of next-generation technologies including WGS, WES, transcriptome, proteome and methylome study, numerous novel genes and pathways have been identified. Moreover, our recent knowledge regarding epigenetic and environmental regulation during cardiogenesis is still evolving and may solve some of the mystery behind complex sCHD. Here, we focus to understand how the complex combination of genetic, environmental and epigenetic factors interact to interfere with developmental pathways, culminating into cardiac and extracardiac defects in sCHD.
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Affiliation(s)
- Jyoti Maddhesiya
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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Cammarata-Scalisi F, Diociaiuti A, Cárdenas Tadich A, Sandoval X, Oranges T, Filippeschi C, Araya Castillo M, Willoughby CE, Cerri A, Gervasini C, Callea M. Dermatological findings in Rubinstein-Taybi Syndrome. Ital J Dermatol Venerol 2023; 158:316-320. [PMID: 37282850 DOI: 10.23736/s2784-8671.23.07547-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Rubinstein-Taybi Syndrome is a rare congenital multisystem syndrome inherited in an autosomal dominant pattern caused by mutations in CREBBP and EP300 genes in approximately 60% and 10% respectively. These genes encode two highly evolutionarily conserved, ubiquitously expressed, and homologous lysine-acetyltransferases, that are involved in number of basic cellular activities, such as DNA repair, cell proliferation, growth, differentiation, apoptosis of cells, and tumor suppression. It is mainly characterized by global developmental delay, moderate to severe intellectual disability, postnatal retardation, microcephaly, skeletal anomalies including broad/short, angled thumbs and/or large first toes, short stature, and dysmorphic facial features. There is an increased risk to develop tumors mainly meningiomas and pilomatrixomas, without a clear genotype-phenotype correlation. Although not considered as characteristic manifestations, numerous cutaneous anomalies have also been reported in patients with this entity. Both susceptibility to the formation of keloids and pilomatricomas are the most often associated cutaneous features. In this review, we discuss the genetics, diagnosis, and clinical features in Rubinstein-Taybi Syndrome with a review of the major dermatological manifestations.
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Affiliation(s)
| | | | | | - Ximena Sandoval
- Pediatrics Service, Regional of Antofagasta Hospital, Antofagasta, Chile
| | - Teresa Oranges
- Unit of Dermatology, Department of Pediatrics, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Cesare Filippeschi
- Unit of Dermatology, Department of Pediatrics, Meyer Children's Hospital IRCCS, Florence, Italy
| | | | | | - Amilcare Cerri
- Dermatological Clinic, Department of Health Sciences, AO Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Cristina Gervasini
- Medical Genetics, Department of Health Sciences, University of Milan, Milan, Italy
| | - Michele Callea
- Pediatric Dentistry and Special Dental Care Unit, Meyer Children's Hospital IRCCS, Florence, Italy
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Huang X, Rui X, Zhang S, Qi X, Rong W, Sheng X. De novo variation in EP300 gene cause Rubinstein-Taybi syndrome 2 in a Chinese family with severe early-onset high myopia. BMC Med Genomics 2023; 16:84. [PMID: 37085840 PMCID: PMC10120144 DOI: 10.1186/s12920-023-01516-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 04/12/2023] [Indexed: 04/23/2023] Open
Abstract
BACKGROUND Rubinstein-Taybi syndrome (RSTS) is characterized by distinctive facial features, broad and often angulated thumbs and halluces, short stature, and moderate-to-severe intellectual disability, classified into two types RSTS1 (CREBBP-RSTS) and RSTS2 (EP300-RSTS). More often, the clinical features are inconclusive and the diagnosis of RSTS is established in a proband with identification of a heterozygous pathogenic variant in CREBBP or EP300 to confirm the diagnosis. METHODS In this study, to describe an association between the clinical phenotype and the genotype of a RSTS2 patient who was initially diagnosed with severe early-onset high myopia (eoHM) from a healthy Chinese family, we tested the proband of this family by whole exome sequencing (WES) and further verified among other family members by Sanger sequencing. Real-time quantitative PCR was used to detect differences in the relative mRNA expression of candidate genes available in the proband and family members. Comprehensive ophthalmic tests as well as other systemic examinations were also performed on participants with various genotypes. RESULTS Whole-exome sequencing revealed that the proband carried the heterozygous frameshift deletion variant c.3714_3715del (p.Leu1239Glyfs*3) in the EP300 gene, which was not carried by the normal parents and young sister as verified by Sanger sequencing, indicating that the variant was de novo. Real-time quantitative PCR showed that the mRNA expression of EP300 gene was lower in the proband than in other normal family members, indicating that such a variant caused an effect on gene function at the mRNA expression level. The variant was classified as pathogenic as assessed by the interpretation principles of HGMD sequence variants and ACMG guidelines. According to ACMG guidelines, the heterozygous frameshift deletion variant c.3714_3715del (p.Leu1239Glyfs*3) in the EP300 gene was more likely the pathogenic variant of this family with RSTS2. CONCLUSIONS Therefore, in this paper, we first report de novo heterozygous variation in EP300 causing eoHM-RSTS. Our study extends the genotypic spectrums for EP300-RSTS and better assists physicians in predicting, diagnosis, genetic counseling, eugenics guidance and gene therapy for EP300-RSTS.
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Affiliation(s)
- Xiaoyu Huang
- Clinical Medical College, Ningxia Medical University, No.692 Shengli Street, Xingqing District, Yinchuan, China
| | - Xue Rui
- Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, China
- Gansu Aier Ophthalmology and Optometry Hospital, 1228-437, Guazhou Road, Qilihe District, Lanzhou City, Gansu, 730050, China
| | - Shuang Zhang
- Ningxia Eye Hospital, People's Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, 936 Huanghe East Road, Jinfeng District, Yinchuan, 750004, China
| | - Xiaolong Qi
- Ningxia Eye Hospital, People's Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, 936 Huanghe East Road, Jinfeng District, Yinchuan, 750004, China
| | - Weining Rong
- Ningxia Eye Hospital, People's Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, 936 Huanghe East Road, Jinfeng District, Yinchuan, 750004, China.
- Department of Ophthalmology, Ningxia Eye Hospital, People's Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, 936 Huanghe East Road, Jinfeng District, Yinchuan, 750004, China.
| | - Xunlun Sheng
- Gansu Aier Ophthalmology and Optometry Hospital, 1228-437, Guazhou Road, Qilihe District, Lanzhou City, Gansu, 730050, China.
- Gansu Aier Ophthalmology and Optometry Hospital, 1228 Guazhou Road, Qilihe Qu, Lanzhou, 730050, China.
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de Thonel A, Ahlskog JK, Daupin K, Dubreuil V, Berthelet J, Chaput C, Pires G, Leonetti C, Abane R, Barris LC, Leray I, Aalto AL, Naceri S, Cordonnier M, Benasolo C, Sanial M, Duchateau A, Vihervaara A, Puustinen MC, Miozzo F, Fergelot P, Lebigot É, Verloes A, Gressens P, Lacombe D, Gobbo J, Garrido C, Westerheide SD, David L, Petitjean M, Taboureau O, Rodrigues-Lima F, Passemard S, Sabéran-Djoneidi D, Nguyen L, Lancaster M, Sistonen L, Mezger V. CBP-HSF2 structural and functional interplay in Rubinstein-Taybi neurodevelopmental disorder. Nat Commun 2022; 13:7002. [PMID: 36385105 PMCID: PMC9668993 DOI: 10.1038/s41467-022-34476-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 10/24/2022] [Indexed: 11/17/2022] Open
Abstract
Patients carrying autosomal dominant mutations in the histone/lysine acetyl transferases CBP or EP300 develop a neurodevelopmental disorder: Rubinstein-Taybi syndrome (RSTS). The biological pathways underlying these neurodevelopmental defects remain elusive. Here, we unravel the contribution of a stress-responsive pathway to RSTS. We characterize the structural and functional interaction between CBP/EP300 and heat-shock factor 2 (HSF2), a tuner of brain cortical development and major player in prenatal stress responses in the neocortex: CBP/EP300 acetylates HSF2, leading to the stabilization of the HSF2 protein. Consequently, RSTS patient-derived primary cells show decreased levels of HSF2 and HSF2-dependent alteration in their repertoire of molecular chaperones and stress response. Moreover, we unravel a CBP/EP300-HSF2-N-cadherin cascade that is also active in neurodevelopmental contexts, and show that its deregulation disturbs neuroepithelial integrity in 2D and 3D organoid models of cerebral development, generated from RSTS patient-derived iPSC cells, providing a molecular reading key for this complex pathology.
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Affiliation(s)
- Aurélie de Thonel
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France.
| | - Johanna K Ahlskog
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Kevin Daupin
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Véronique Dubreuil
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Jérémy Berthelet
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Carole Chaput
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
- Ksilink, Strasbourg, France
| | - Geoffrey Pires
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Camille Leonetti
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Ryma Abane
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Lluís Cordón Barris
- Laboratory of Molecular Regulation of Neurogenesis, GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège, Belgium
| | - Isabelle Leray
- Université de Nantes, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000, Nantes, France
| | - Anna L Aalto
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Sarah Naceri
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Marine Cordonnier
- INSERM, UMR1231, Laboratoire d'Excellence LipSTIC, Dijon, France
- University of Bourgogne Franche-Comté, Dijon, France
- Département d'Oncologie médicale, Centre Georges-François Leclerc, Dijon, France
| | - Carène Benasolo
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Matthieu Sanial
- CNRS, UMR 7592 Institut Jacques Monod, F-75205, Paris, France
| | - Agathe Duchateau
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
| | - Anniina Vihervaara
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
- KTH Royal Institute of Technology, Stockholm, Sweden
| | - Mikael C Puustinen
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Federico Miozzo
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France
- Neuroscience Institute-CNR (IN-CNR), Milan, Italy
| | - Patricia Fergelot
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France and INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Élise Lebigot
- Service de Biochimie-pharmaco-toxicologie, Hôpital Bicêtre, Hopitaux Universitaires Paris-Sud, 94270 Le Kremlin Bicêtre, Paris-Sud, France
| | - Alain Verloes
- Université de Paris, INSERM, NeuroDiderot, Robert-Debré Hospital, F-75019, Paris, France
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Pierre Gressens
- Université de Paris, INSERM, NeuroDiderot, Robert-Debré Hospital, F-75019, Paris, France
| | - Didier Lacombe
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France and INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Jessica Gobbo
- INSERM, UMR1231, Laboratoire d'Excellence LipSTIC, Dijon, France
- University of Bourgogne Franche-Comté, Dijon, France
- Département d'Oncologie médicale, Centre Georges-François Leclerc, Dijon, France
| | - Carmen Garrido
- INSERM, UMR1231, Laboratoire d'Excellence LipSTIC, Dijon, France
- University of Bourgogne Franche-Comté, Dijon, France
- Département d'Oncologie médicale, Centre Georges-François Leclerc, Dijon, France
| | - Sandy D Westerheide
- Department of Cell Biology, Microbiology, and Molecular Biology, College of Arts and Sciences, University of South Florida, Tampa, FL, USA
| | - Laurent David
- Université de Nantes, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000, Nantes, France
| | - Michel Petitjean
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Olivier Taboureau
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | | | - Sandrine Passemard
- Université de Paris, INSERM, NeuroDiderot, Robert-Debré Hospital, F-75019, Paris, France
| | | | - Laurent Nguyen
- Laboratory of Molecular Regulation of Neurogenesis, GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège, Belgium
| | - Madeline Lancaster
- MRC Laboratory of Molecular Biology, Cambridge Biomedical, Campus, Cambridge, UK
| | - Lea Sistonen
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Valérie Mezger
- Université de Paris, CNRS, Epigenetics and Cell Fate, F-75013, Paris, France.
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Kurtz KJ, Tallis E, Marcogliese AN, Pulivarthi RH, Potocki L, Stevens AM. Near-Haploid B-Cell Acute Lymphoblastic Leukemia in a Patient with Rubinstein-Taybi Syndrome. Pediatr Hematol Oncol 2022; 39:747-754. [PMID: 35275800 DOI: 10.1080/08880018.2022.2049938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rubinstein-Taybi syndrome (RSTS) is a rare disorder characterized by developmental delay, short stature, dysmorphic facies and skeletal abnormalities. RSTS has been linked to a variety of malignant and benign tumors, but the frequency and characteristics of RSTS-related neoplasms remain unclear. We describe a unique case of near haploid B-cell lymphoblastic leukemia (B-ALL) in a 6-year-old girl with RSTS who harbors a likely pathogenic variant in CREBBP. Somatic CREBBP variants are enriched in some subsets of ALL; however, germline variants have not been previously described in childhood leukemia and may represent an underrecognized predisposition to malignancy. Our patient's disease responded poorly to conventional chemotherapy and relapsed following a complete remission achieved with CD19 CAR T cell therapy. We propose that the constitutional CREBBP variant may have played a significant role in the leukemia's resistance to chemotherapy and this patient's poor response to therapy.
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Affiliation(s)
- Kristen J Kurtz
- Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, USA
| | - Eran Tallis
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Andrea N Marcogliese
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA
| | - Rao H Pulivarthi
- Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, USA
| | - Lorraine Potocki
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Alexandra M Stevens
- Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, USA
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Nagai Y, Nishioka M, Tanaka T, Shimano T, Kirino E, Suzuki T, Kato T. Identification of 22q11.2 deletion in a patient with schizophrenia and clinically diagnosed Rubinstein-Taybi syndrome. PCN REPORTS : PSYCHIATRY AND CLINICAL NEUROSCIENCES 2022; 1:e34. [PMID: 38868697 PMCID: PMC11114328 DOI: 10.1002/pcn5.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/22/2022] [Accepted: 07/07/2022] [Indexed: 06/14/2024]
Abstract
Background Rubinstein-Taybi syndrome (RTS) is a rare autosomal-dominant disease. Almost all cases are sporadic and attributed to de novo variant. Psychotic symptoms in RTS are rare and have been reported in only a few published cases. On the other hand, 22q11.2 deletion syndrome is the most common chromosomal microdeletion in humans. The 22q11.2 deletion is well recognized as a risk factor for schizophrenia. Here, we present a schizophrenic psychosis case clinically diagnosed as RTS but resolved as carrying 22q11.2 deletion by genomic analysis. Case presentation A 38-year-old Japanese male was admitted to our hospital due to psychotic symptoms. He had been diagnosed with RTS based on physical characteristics at the age of 9 months. On admission, we performed whole exome sequencing. He had no pathogenic variant in CREBBP or EP300. We detected 2.5 Mb deletion on 22q11.2 and one rare loss-of-function variant in a loss-of-function-constrained gene (MTSS1) and three rare missense variants in missense-constrained genes (CELSR3, HERC1, and TLN1). Psychotic symptoms were ameliorated by the treatment of risperidone. Conclusion The psychiatric manifestation and genomic analysis may be a clue to detecting 22q11.2 deletion syndrome in undiagnosed patients. The reason for similarity in physical characteristics in 22q11.2 deletion syndrome and RTS remains unresolved. The 22q11.2 deletion and HERC1 contribute to the patient's phenotype.
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Affiliation(s)
- Yasuhito Nagai
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo Tokyo Koto Geriatric Medical CenterTokyoJapan
| | - Masaki Nishioka
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo University HospitalTokyoJapan
| | - Tatsuki Tanaka
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo University Koshigaya HospitalKoshigayaJapan
| | | | - Eiji Kirino
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo University Shizuoka HospitalIzunokuniJapan
| | - Toshihito Suzuki
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo University Koshigaya HospitalKoshigayaJapan
| | - Tadafumi Kato
- Department of PsychiatryJuntendo University School of MedicineTokyoJapan
- Department of PsychiatryJuntendo University HospitalTokyoJapan
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8
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Wang Q, Wang C, Wei WB, Rong WN, Shi XY. A novel CREBBP mutation and its phenotype in a case of Rubinstein–Taybi syndrome. BMC Med Genomics 2022; 15:182. [PMID: 35986282 PMCID: PMC9389776 DOI: 10.1186/s12920-022-01335-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 08/11/2022] [Indexed: 11/10/2022] Open
Abstract
Background This study was to report a novel CREBBP mutation and phenotype in a child with Rubinstein–Taybi syndrome. Methods Case report of a 9-year-old boy. Results We described the patient’s clinical manifestations in detail, and found that in addition to the typical systemic manifestations of the syndrome, the outstanding manifestation of the child was severe intellectual deficiency and prominent ocular abnormalities. Whole-exome sequencing and sanger sequencing were performed on the patient and his parents, a large intragenic deletion, covering the exon 1 region and part of the intron 1 region of the TRAP1 gene, and the entire region from intron 27 to exon 30 of the CREBBP gene (chr16:3745393-3783894) was identified on the patient. This mutation affected the CREBBP histone acetyltransferase (HAT) domain. Conclusions This findings in our patient add to the spectrum of genetic variants described in Rubinstein–Taybi syndrome and present a RSTS patient with various ocular anomalies including early onset glaucoma.
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Rubinstein–Taybi Syndrome in a Filipino Infant with a Novel CREBBP Gene Pathogenic Variant. Case Rep Genet 2022; 2022:3388879. [PMID: 35637708 PMCID: PMC9148230 DOI: 10.1155/2022/3388879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 04/30/2022] [Indexed: 11/29/2022] Open
Abstract
Rubinstein–Taybi syndrome (RSTS) is a rare genetic disorder characterized by dysmorphic facial features, broad thumbs and halluces, intellectual disability, and postnatal growth retardation. This report presents a male infant with microcephaly and characteristic facial features, namely, low anterior hairline, hirsutism, thin upper lip and micrognathia, broad thumbs and first toes, cryptorchidism, recurrent pneumonia, developmental delay, and growth retardation. Genetic testing showed a novel pathogenic variant in the CREBBP gene which is consistent with the clinical diagnosis of RSTS.
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Choi N, Kim HY, Lim BC, Chae JH, Kim SY, Ko JM. Genetic and clinical heterogeneity in Korean patients with Rubinstein-Taybi syndrome. Mol Genet Genomic Med 2021; 9:e1791. [PMID: 34427995 PMCID: PMC8580098 DOI: 10.1002/mgg3.1791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 07/22/2021] [Accepted: 08/13/2021] [Indexed: 12/21/2022] Open
Abstract
Background Rubinstein–Taybi syndrome (RSTS) is a rare congenital malformation syndrome with clinical characteristics such as hypertrichosis, high arched eyebrows, large beaked nose, and broad thumbs and halluces. RSTS patients showed intellectual disability and health problems such as short stature, ophthalmologic abnormalities, congenital heart defects, genitourinary defects, and variable types of tumors. Although mutations in CREBBP and EP300 genes are associated with RSTS features, genetic causation is still unknown in 30% of patients. Methods We present clinical and molecular genetic characteristics of 25 unrelated Korean patients clinically diagnosed with RSTS. Sanger sequencing analysis and multiplex ligation‐dependent probe amplification for CREBBP in 25 patients and exome sequencing of CREBBP‐negative cases were performed in nine patients successively. Results Causative variants were identified in 20 (80%) patients: 16 (64%) in CREBBP and 4 (16%) in EP300. All the identified variants predict protein truncation (11 frameshift, 2 nonsense, 1 splicing‐site, and 6 large intragenic deletions); there are no repeatedly identified sequence variants. Four of the CREBBP and all four EP300 variants are novel. Intellectual disability was noted in 24/25 patients (96%); no difference was found between CREBBP and EP300 groups. One patient with a CREBBP variant (4%) had malignant tumor. Conclusions To date, this is the largest cohort of patients with RSTS including EP300‐related patients in Korea. Future large‐scale studies to find genetic mutation of molecularly unsolved patients and long‐term prospective studies are required to validate our results.
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Affiliation(s)
- Naye Choi
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hwa Young Kim
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Byung Chan Lim
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Rare Disease Center, Seoul National University Hospital, Seoul, Korea
| | - Jong-Hee Chae
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Rare Disease Center, Seoul National University Hospital, Seoul, Korea
| | - Soo Yeon Kim
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Rare Disease Center, Seoul National University Hospital, Seoul, Korea
| | - Jung Min Ko
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Rare Disease Center, Seoul National University Hospital, Seoul, Korea
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11
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Kumar P, Thota PN. Barrett's Esophagus in Rubinstein-Taybi Syndrome. Cureus 2020; 12:e11709. [PMID: 33391942 PMCID: PMC7769793 DOI: 10.7759/cureus.11709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Rubinstein-Taybi syndrome (RSTS; Online Mendelian Inheritance in Man® [OMIM®] #180849, #613684; Orpha: 783 ) is a rare plurimalformative autosomal dominant genetic disorder that affects one in 100,000-125,000 newborns with equal male and female distribution. It is characterized by distinctive facial features, short stature, broad and often angulated thumbs and halluces, and moderate-to-severe intellectual disability. In addition to ocular, cardiac, renal, endocrinologic, neurological, and psychomotor abnormalities, RSTS individuals can present with several gastrointestinal symptoms such as feeding difficulties, gastroesophageal reflux, and constipation. Currently, therapeutic strategies for RSTS involves a multi-disciplinary approach focusing mainly on symptomatic management. Here, we present a case of young-onset Barrett's esophagus in a patient with Rubinstein-Taybi syndrome.
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12
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Yu PT, Luk HM, Lo IFM. Rubinstein-Taybi syndrome in Chinese population with four novel mutations. Am J Med Genet A 2020; 185:267-273. [PMID: 33063428 DOI: 10.1002/ajmg.a.61922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/31/2020] [Accepted: 09/21/2020] [Indexed: 01/19/2023]
Abstract
Rubinstein-Taybi syndrome (RSTS, OMIM*180849) is a rare autosomal dominant disorder, characterized by distinctive facial features, short stature, broad and often angulated thumbs and halluces, with occasional congenital anomalies. Characteristic facial dysmorphic features include downslanting palpebral fissures, low hanging columella. RSTS is caused by pathogenic variants in two ubiquitously expressed and highly homologous genes, CREBBP (OMIM*600140) and EP300 (OMIM*600140). Clinical features were well reported especially in Caucasian ethnicity. We would like to report the clinical phenotype of RSTS in our Chinese population and highlight four novel mutations in CREBBP gene.
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Affiliation(s)
- Pui Tak Yu
- Clinical Genetic Service, Department of Health, Kowloon, Hong Kong
| | - Ho-Ming Luk
- Clinical Genetic Service, Department of Health, Kowloon, Hong Kong
| | - Ivan F M Lo
- Clinical Genetic Service, Department of Health, Kowloon, Hong Kong
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13
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Tekendo-Ngongang C, Owosela B, Fleischer N, Addissie YA, Malonga B, Badoe E, Gupta N, Moresco A, Huckstadt V, Ashaat EA, Hussen DF, Luk HM, Lo IFM, Hon-Yin Chung B, Fung JLF, Moretti-Ferreira D, Batista LC, Lotz-Esquivel S, Saborio-Rocafort M, Badilla-Porras R, Penon Portmann M, Jones KL, Abdul-Rahman OA, Uwineza A, Prijoles EJ, Ifeorah IK, Llamos Paneque A, Sirisena ND, Dowsett L, Lee S, Cappuccio G, Kitchin CS, Diaz-Kuan A, Thong MK, Obregon MG, Mutesa L, Dissanayake VHW, El Ruby MO, Brunetti-Pierri N, Ekure EN, Stevenson RE, Muenke M, Kruszka P. Rubinstein-Taybi syndrome in diverse populations. Am J Med Genet A 2020; 182:2939-2950. [PMID: 32985117 DOI: 10.1002/ajmg.a.61888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/18/2020] [Accepted: 09/05/2020] [Indexed: 01/14/2023]
Abstract
Rubinstein-Taybi syndrome (RSTS) is an autosomal dominant disorder, caused by loss-of-function variants in CREBBP or EP300. Affected individuals present with distinctive craniofacial features, broad thumbs and/or halluces, and intellectual disability. RSTS phenotype has been well characterized in individuals of European descent but not in other populations. In this study, individuals from diverse populations with RSTS were assessed by clinical examination and facial analysis technology. Clinical data of 38 individuals from 14 different countries were analyzed. The median age was 7 years (age range: 7 months to 47 years), and 63% were females. The most common phenotypic features in all population groups included broad thumbs and/or halluces in 97%, convex nasal ridge in 94%, and arched eyebrows in 92%. Face images of 87 individuals with RSTS (age range: 2 months to 47 years) were collected for evaluation using facial analysis technology. We compared images from 82 individuals with RSTS against 82 age- and sex-matched controls and obtained an area under the receiver operating characteristic curve (AUC) of 0.99 (p < .001), demonstrating excellent discrimination efficacy. The discrimination was, however, poor in the African group (AUC: 0.79; p = .145). Individuals with EP300 variants were more effectively discriminated (AUC: 0.95) compared with those with CREBBP variants (AUC: 0.93). This study shows that clinical examination combined with facial analysis technology may enable earlier and improved diagnosis of RSTS in diverse populations.
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Affiliation(s)
- Cedrik Tekendo-Ngongang
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
| | - Babajide Owosela
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
| | | | - Yonit A Addissie
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
| | - Bryan Malonga
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
| | - Ebenezer Badoe
- Department of Child Health, School of Medicine and Dentistry, College of Health Sciences, Accra, Ghana
| | - Neerja Gupta
- Division of Genetics, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Angélica Moresco
- Servicio de Genética, Hospital de Pediatría Garrahan, Buenos Aires, Argentina
| | - Victoria Huckstadt
- Servicio de Genética, Hospital de Pediatría Garrahan, Buenos Aires, Argentina
| | - Engy A Ashaat
- Clinical Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt
| | - Dalia Farouk Hussen
- Cytogenetic Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt
| | - Ho-Ming Luk
- Department of Health, Clinical Genetic Service, Hong Kong Special Administrative Region, Hong Kong, China
| | - Ivan F M Lo
- Department of Health, Clinical Genetic Service, Hong Kong Special Administrative Region, Hong Kong, China
| | - Brian Hon-Yin Chung
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
| | - Jasmine L F Fung
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
| | - Danilo Moretti-Ferreira
- Department of Genetics, Institute of Biosciences, Sao Paulo State University-UNESP, Botucatu, São Paulo, Brazil
| | - Letícia Cassimiro Batista
- Department of Genetics, Institute of Biosciences, Sao Paulo State University-UNESP, Botucatu, São Paulo, Brazil
| | - Stephanie Lotz-Esquivel
- Rare and Orphan Disease Multidisciplinary Clinic, Hospital San Juan de Dios (CCSS), San José, Costa Rica
| | - Manuel Saborio-Rocafort
- Medical Genetics and Metabolism Department, National Children's Hospital "Dr. Carlos Sáenz Herrera" (CCSS), San José, Costa Rica
| | - Ramses Badilla-Porras
- Medical Genetics and Metabolism Department, National Children's Hospital "Dr. Carlos Sáenz Herrera" (CCSS), San José, Costa Rica
| | - Monica Penon Portmann
- Medical Genetics and Metabolism Department, National Children's Hospital "Dr. Carlos Sáenz Herrera" (CCSS), San José, Costa Rica.,Division of Medical Genetics, Department of Pediatrics & Institute for Human Genetics, University of California San Francisco, San Francisco, California, USA
| | - Kelly L Jones
- Division of Medical Genetics and Metabolism, Children's Hospital of The King's Daughters, Norfolk, Virginia, USA
| | - Omar A Abdul-Rahman
- Munroe-Meyer institute for Genetics and Rehabilitation, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Annette Uwineza
- Centre for Human Genetics, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
| | | | | | - Arianne Llamos Paneque
- Medical Genetics Service, Specialty Hospital of the Armed Forces No. 1, International University of Ecuador, Sciences of Life Faculty, School of Dentistry, Quito, Ecuador
| | - Nirmala D Sirisena
- Human Genetics Unit, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Leah Dowsett
- Kapi'olani Medical Center and University of Hawai'i, Honolulu, Hawaii, USA
| | - Sansan Lee
- Kapi'olani Medical Center and University of Hawai'i, Honolulu, Hawaii, USA
| | - Gerarda Cappuccio
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples, Italy.,Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Carolyn Sian Kitchin
- Division of Human Genetics, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | | | - Meow-Keong Thong
- Department of Paediatrics, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Leon Mutesa
- Centre for Human Genetics, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
| | | | - Mona O El Ruby
- Clinical Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt
| | - Nicola Brunetti-Pierri
- Department of Translational Medicine, Section of Pediatrics, Federico II University, Naples, Italy.,Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Ekanem Nsikak Ekure
- Department of Paediatrics, College of Medicine, University of Lagos, Lagos, Nigeria
| | | | - Maximilian Muenke
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
| | - Paul Kruszka
- Medical Genetics Branch, National Human Genome Research Institute, The National Institutes of Health, Bethesda, Maryland, USA
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14
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Associations of the microRNA gene polymorphisms with the risk of non-syndromic supernumerary teeth in a Chinese population. Arch Oral Biol 2020; 117:104771. [DOI: 10.1016/j.archoralbio.2020.104771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 11/23/2022]
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15
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Kuwabara J, Akita S, Sato M, Watanabe K, Tanigawa K, Matsuno Y, Abe Y, Kikuchi S, Yoshida M, Koga S, Ishimaru K, Watanabe Y. Paraovarian Cyst Torsion in a Patient with Rubinstein-Taybi Syndrome: A Case Report. J NIPPON MED SCH 2020; 88:248-252. [PMID: 32863342 DOI: 10.1272/jnms.jnms.2021_88-311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rubinstein-Taybi syndrome is an extremely rare autosomal dominant genetic disorder that occurs in 1/125,000 and is characterized by distinctive facial appearance, short stature, mild to severe mental retardation, and higher risk for cancer. In addition, variable organ anomalies had been reported. Paraovarian cyst causing torsion of the ipsilateral fallopian tube is less common, with an estimated incidence of 1/1,500,000, but it can adversely affect tubal function. It occurs mainly in women in the reproductive age and is very rare in prepubescent girls. Here, we described the successful treatment of an extremely rare case of paraovarian cyst causing torsion of the ipsilateral fallopian tube in a patient with Rubinstein-Taybi syndrome. A 14-year-old girl with Rubinstein-Taybi syndrome was referred to our hospital for abdominal pain. Her medical history was unremarkable, except for moderate hirsutism and keloid scar. Physical examination revealed tenderness in the lower abdominal midline. The preoperative diagnosis was torsion of a left ovarian cyst. An exploratory laparoscopy was performed because of acute abdominal pain and revealed a left fallopian tube that was twisted twice due to an ipsilateral paraovarian cyst. The huge paraovarian cyst required laparotomy cystectomy, and the left ovary was preserved. Her postoperative course was uncomplicated. Preoperative diagnosis of paraovarian cysts can be difficult. The moderate hirsutism seen in our patient suggested the presence of a large paraovarian cyst due to androgen receptor-mediated effects. Therefore, Rubinstein-Taybi syndrome patients with hirsutism should be screened and assessed by pediatric surgeons for the presence of paraovarian cysts.
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Affiliation(s)
- Jun Kuwabara
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Satoshi Akita
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Mitsunori Sato
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Katsuya Watanabe
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Kazufumi Tanigawa
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | | | - Yousuke Abe
- Department of Surgery, Saijo Central Hospital
| | - Satoshi Kikuchi
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Motohira Yoshida
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Shigehiro Koga
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Kei Ishimaru
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
| | - Yuji Watanabe
- Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University Graduate School of Medicine
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16
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Cross E, Duncan-Flavell PJ, Howarth RJ, Hobbs JI, Thomas NS, Bunyan DJ. Screening of a large Rubinstein-Taybi cohort identified many novel variants and emphasizes the importance of the CREBBP histone acetyltransferase domain. Am J Med Genet A 2020; 182:2508-2520. [PMID: 32827181 DOI: 10.1002/ajmg.a.61813] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/24/2020] [Accepted: 06/29/2020] [Indexed: 01/20/2023]
Abstract
Pathogenic variants within the CREBBP and EP300 genes account for the majority of individuals with Rubinstein-Taybi syndrome (RSTS). Data are presented from a large cohort of 395 individuals referred for diagnostic testing of CREBBP, and of the 19 CREBBP missense variants classified as likely pathogenic in this study, 17 were within the histone acetyltransferase (HAT) domain, providing evidence that this domain is critical to the normal function of the CREBBP protein (CBP). The data presented here, combined with other published results, suggest that the presence of a missense variant within the CBP HAT domain can be considered as moderate evidence of pathogenicity in the context of official variant interpretation guidelines. Within our study cohort, 129 had a pathogenic or likely pathogenic CREBBP variant and 5 had a variant of uncertain significance (VUS) which warranted familial studies. 147 of the remaining probands were also screened for EP300 and a further 16 pathogenic or likely pathogenic variants were identified, plus one VUS. Therefore, this analysis has provided a molecular diagnosis in at least 145 individuals with RSTS (37%) and identified a wide range of variants (n = 133) of which 103 were novel.
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Affiliation(s)
- Esther Cross
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK
| | | | - Rachel J Howarth
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK
| | - James I Hobbs
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK
| | - Nicholas Simon Thomas
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - David J Bunyan
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
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17
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Muskens IS, Zhang C, de Smith AJ, Biegel JA, Walsh KM, Wiemels JL. Germline genetic landscape of pediatric central nervous system tumors. Neuro Oncol 2020; 21:1376-1388. [PMID: 31247102 PMCID: PMC6827836 DOI: 10.1093/neuonc/noz108] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Central nervous system (CNS) tumors are the second most common type of cancer among children. Depending on histopathology, anatomic location, and genomic factors, specific subgroups of brain tumors have some of the highest cancer-related mortality rates or result in considerable lifelong morbidity. Pediatric CNS tumors often occur in patients with genetic predisposition, at times revealing underlying cancer predisposition syndromes. Advances in next-generation sequencing (NGS) have resulted in the identification of an increasing number of cancer predisposition genes. In this review, the literature on genetic predisposition to pediatric CNS tumors is evaluated with a discussion of potential future targets for NGS and clinical implications. Furthermore, we explore potential strategies for enhancing the understanding of genetic predisposition of pediatric CNS tumors, including evaluation of non-European populations, pan-genomic approaches, and large collaborative studies.
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Affiliation(s)
- Ivo S Muskens
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Chenan Zhang
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California
| | - Adam J de Smith
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jaclyn A Biegel
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, California.,Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, California
| | - Kyle M Walsh
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California.,Department of Neurosurgery, Duke University, Durham, North Carolina
| | - Joseph L Wiemels
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, California.,Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California
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18
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Wu Y, Xia Y, Li P, Qu HQ, Liu Y, Yang Y, Lin J, Zheng M, Tian L, Wu Z, Huang S, Qin X, Zhou X, Chen S, Liu Y, Wang Y, Li X, Zeng H, Hakonarson H, Zhuang J. Role of the ADCY9 gene in cardiac abnormalities of the Rubinstein-Taybi syndrome. Orphanet J Rare Dis 2020; 15:101. [PMID: 32321550 PMCID: PMC7178576 DOI: 10.1186/s13023-020-01378-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/07/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rubinstein-Taybi syndrome (RTS) is a rare, congenital, plurimalformative, and neurodevelopmental disorder. Previous studies have reported that large deletions contribute to more severe RTS phenotypes than those caused by CREBBP point mutations, suggesting a concurrent pathogenetic role of flanking genes, typical of contiguous gene syndromes, but the detailed genetics are unclear. RESULTS This study presented a rare case of Rubinstein-Taybi (RT) syndrome with serious cardiac abnormalities. Based on the clinical and genetic analysis of the patient, the ADCY9 gene deletion was highlighted as a plausible explanation of cardiac abnormalities. In adcy9 morphant zebrafish, cardiac malformation was observed. Immunofluorescence study disclosed increased macrophage migration and cardiac apoptosis. RNA sequencing in zebrafish model highlighted the changes of a number of genes, including increased expression of the mmp9 gene which encodes a matrix metalloproteinase with the main function to degrade and remodel extracellular matrix. CONCLUSIONS In this study, we identified a plausible new candidate gene ADCY9 of CHD through the clinical and genetic analysis of a rare case of Rubinstein-Taybi (RT) syndrome with serious cardiac abnormalities. By functional study of zebrafish, we demonstrated that deletion of adcy9 is the causation for the cardiac abnormalities. Cardiac apoptosis and increased expression of the MMP9 gene are involved in the pathogenesis.
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Affiliation(s)
- Yueheng Wu
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.,Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Yu Xia
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Ping Li
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Hui-Qi Qu
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Yichuan Liu
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Yongchao Yang
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Jijin Lin
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Meng Zheng
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Lifeng Tian
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Zhuanbin Wu
- Shanghai Model Organisms Center Inc, Shanghai, China
| | - Shufang Huang
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Xianyu Qin
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Xianwu Zhou
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Shaoxian Chen
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Yanying Liu
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Yonghua Wang
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Xiaofeng Li
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Hanshi Zeng
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Hakon Hakonarson
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA. .,Department of Pediatrics and Division of Human Genetics, University of Pennsylvania, Philadelphia, PA, USA.
| | - Jian Zhuang
- Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
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19
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Yu S, Wu B, Qian Y, Zhang P, Lu Y, Dong X, Wang Q, Zhao X, Liu R, Zhou W, Wang H. Clinical exome sequencing identifies novel CREBBP variants in 18 Chinese Rubinstein-Taybi Syndrome kids with high frequency of polydactyly. Mol Genet Genomic Med 2019; 7:e1009. [PMID: 31637876 PMCID: PMC6900364 DOI: 10.1002/mgg3.1009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 04/22/2019] [Indexed: 11/10/2022] Open
Abstract
Background Rubinstein–Taybi syndrome (RSTS) is a rare genetic disease characterized by broad thumbs and halluces, facial dysmorphisms, short stature, and intellectual disability. RSTS is mainly caused by de novo variants in epigenetics‐associated gene, CREBBP. To date, there is no cohort study of CREBBP variants in Chinese RSTS patients. Methods In this study, 18 kids who meet the main criteria of RSTS were recruited. Molecular diagnoses were analyzed by clinical exome sequencing (CES), and the medical records were reviewed retrospectively. Results Nineteen novel CREBBP variants in 18 RSTS patients were identified, including two missense, four nonsense, five frameshift, one splicing variants, and seven intragenic deletions. A higher incidence (37%, 7/19) of intragenic deletions was detected. One patient who had two de novo missense variants c.[4112T > A, 4118C > A] in cis and one patient who had a de novo frameshift variant c.5837delC in homozygous state (90%) were found in this study. Compared with the previously reported populations, seven clinical features were different, including the higher incidence of polydactyly, syndactyly, microcephaly, and micrognathia, and the lower incidence of angulated thumbs, autistic behavior, and epilepsy. One patient with obesity in the first year was diagnosed with CREBBP gene exon 2 deletion, was initially suspected of Prader–Willi syndrome. Conclusion We reported the genetic and clinical information of 18 RSTS patients from Chinese population with novel CREBBP variants. This study provides a new insight into RSTS and illustrates the value of applying CES which increases the diagnostic yields and enhances the clinical care of RSTS patients.
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Affiliation(s)
- Sha Yu
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Bingbing Wu
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Yanyan Qian
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Ping Zhang
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Yulan Lu
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Xinran Dong
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Qing Wang
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Xuemei Zhao
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Renchao Liu
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Wenhao Zhou
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Departments of Neonatology, Children's Hospital of Fudan University, Shanghai, China
| | - Huijun Wang
- Key Laboratory of Birth Defects, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
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20
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Pérez-Grijalba V, García-Oguiza A, López M, Armstrong J, García-Miñaur S, Mesa-Latorre JM, O'Callaghan M, Pineda Marfa M, Ramos-Arroyo MA, Santos-Simarro F, Seidel V, Domínguez-Garrido E. New insights into genetic variant spectrum and genotype-phenotype correlations of Rubinstein-Taybi syndrome in 39 CREBBP-positive patients. Mol Genet Genomic Med 2019; 7:e972. [PMID: 31566936 PMCID: PMC6825870 DOI: 10.1002/mgg3.972] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/26/2019] [Indexed: 01/19/2023] Open
Abstract
Background Rubinstein‐Taybi syndrome (RSTS) is a rare congenital disorder characterized by broad thumbs and halluces, intellectual disability, distinctive facial features, and growth retardation. Clinical manifestations of RSTS are varied and overlap with other syndromes’ phenotype, which makes clinical diagnosis challenging. CREBBP is the major causative gene (55%–60% of the cases), whereas pathogenic variants found in EP300 represent the molecular cause in 8% of RSTS patients. A wide range of CREBBP pathogenic variants have been reported so far, including point mutations (30%–50%) and large deletions (10%). Methods The aim of this study was to characterize the CREBBP genetic variant spectrum in 39 RSTS patients using Multiplex Ligation‐dependent Probe Amplification and DNA sequencing techniques (Sanger and Trio‐based whole‐exome sequencing). Results We identified 15 intragenic deletions/duplications, ranging from one exon to the entire gene. As a whole, 25 de novo point variants were detected: 4 missense, 12 nonsense, 5 frameshift, and 4 splicing pathogenic variants. Three of them were classified as of uncertain significance and one of the patients carried two different variants. Conclusion Seventeen of the 40 genetic variants detected were reported for the first time in this work contributing, thus, to expand the molecular knowledge of this complex disorder.
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Affiliation(s)
| | | | - María López
- Center for Biomedical Research (CIBIR), Fundación Rioja Salud, Logroño, Spain
| | - Judith Armstrong
- Hospital Sant Joan de Déu (HSJD), CIBERER. Esplugues de Llobregat, Barcelona, Spain
| | - Sixto García-Miñaur
- Institute of Medical and Molecular Genetics (INGEMM)-IdiPAZ, Hospital Universitario La Paz-UAM Madrid, Madrid, Spain
| | | | - Mar O'Callaghan
- Hospital Sant Joan de Déu (HSJD), CIBERER. Esplugues de Llobregat, Barcelona, Spain
| | - Mercé Pineda Marfa
- Hospital Sant Joan de Déu (HSJD), CIBERER. Esplugues de Llobregat, Barcelona, Spain
| | | | - Fernando Santos-Simarro
- Institute of Medical and Molecular Genetics (INGEMM)-IdiPAZ, Hospital Universitario La Paz-UAM Madrid, Madrid, Spain
| | - Verónica Seidel
- Clinical Genetics, Department of Pediatrics, Hospital General Universitario Gregorio Marañón, Madrid, Spain
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21
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Sheikh BN, Akhtar A. The many lives of KATs - detectors, integrators and modulators of the cellular environment. Nat Rev Genet 2019; 20:7-23. [PMID: 30390049 DOI: 10.1038/s41576-018-0072-4] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Research over the past three decades has firmly established lysine acetyltransferases (KATs) as central players in regulating transcription. Recent advances in genomic sequencing, metabolomics, animal models and mass spectrometry technologies have uncovered unexpected new roles for KATs at the nexus between the environment and transcriptional regulation. Thousands of reversible acetylation sites have been mapped in the proteome that respond dynamically to the cellular milieu and maintain major processes such as metabolism, autophagy and stress response. Concurrently, researchers are continuously uncovering how deregulation of KAT activity drives disease, including cancer and developmental syndromes characterized by severe intellectual disability. These novel findings are reshaping our view of KATs away from mere modulators of chromatin to detectors of the cellular environment and integrators of diverse signalling pathways with the ability to modify cellular phenotype.
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Affiliation(s)
- Bilal N Sheikh
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Asifa Akhtar
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany.
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22
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Exploring by whole exome sequencing patients with initial diagnosis of Rubinstein-Taybi syndrome: the interconnections of epigenetic machinery disorders. Hum Genet 2019; 138:257-269. [PMID: 30806792 DOI: 10.1007/s00439-019-01985-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 02/17/2019] [Indexed: 12/29/2022]
Abstract
Rubinstein-Taybi syndrome (RSTS) is an autosomal-dominant neurodevelopmental disease affecting 1:125,000 newborns characterized by intellectual disability, growth retardation, facial dysmorphisms and skeletal abnormalities. RSTS is caused by mutations in genes encoding for writers of the epigenetic machinery: CREBBP (~ 60%) or its homologous EP300 (~ 10%). No causative mutation is identified in up to 30% of patients. We performed whole-exome sequencing (WES) on eight RSTS-like individuals who had normal high-resolution array CGH testing and were CREBBP- and EP300-mutation -negative, to identify the molecular cause. In four cases, we identified putatively causal variants in three genes (ASXL1, KMT2D and KMT2A) encoding members of the epigenetic machinery known to be associated with the Bohring-Opitz, Kabuki and Wiedemann-Steiner syndromes. Each variant is novel, de novo, fulfills the ACMG criteria and is predicted to result in loss-of-function leading to haploinsufficiency of the epi-gene. In two of the remaining cases, homozygous/compound heterozygous variants in XYLT2 and PLCB4 genes, respectively, associated with spondyloocular and auriculocondylar 2 syndromes and in the latter an additional candidate variant in XRN2, a gene yet unrelated to any disease, were detected, but their pathogenicity remains uncertain. These results underscore the broad clinical spectrum of Mendelian disorders of the epigenetic apparatus and the high rate of WES disclosure of the genetic basis in cases which may pose a challenge for phenotype encompassing distinct syndromes. The overlapping features of distinct intellectual disability syndromes reflect common pathogenic molecular mechanisms affecting the complex regulation of balance between open and closed chromatin.
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23
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24
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Pavone P, Cho SY, Praticò A, Falsaperla R, Ruggieri M, Jin DK. Ptosis in childhood: A clinical sign of several disorders: Case series reports and literature review. Medicine (Baltimore) 2018; 97:e12124. [PMID: 30200099 PMCID: PMC6133583 DOI: 10.1097/md.0000000000012124] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Blepharoptosis (ptosis) is a common but often overlooked sign that may serve as a sign/manifestation of other conditions, ranging from a mild and purely cosmetic presentation to a severe and occasionally progressive disorder. Ptosis may show an acute onset or may manifest as a chronic disorder. Its presentation may vary: unilateral versus bilateral, progressive versus non-progressive, isolated versus complex which occurs in association with other symptoms, and congenital versus acquired (often concomitant with neuromuscular disorders).Congenital ptosis includes the isolated type-the congenital cranial dysinnervation disorders, which are further, distinguished into different subtypes such as Horner syndrome (HS), and ptosis as a sign/manifestation of various congenital malformation syndromes.In this article, we review the primary causes of ptosis occurring in childhood, and its various clinical presentations, including a short report on selected cases observed in our institution: a classical isolated familial ptosis comprising 14 members over 5 generations, 3 sibling with isolated congenital ptosis who in addition suffered by episodes of febrile seizures, a patient with Duane retraction syndrome who presented congenital skin and hair anomalies, and a girl with HS who showed a history of congenital imperforate hymen. A flowchart outlining the congenital and acquired type of ptosis and the clinical approach to the management and treatment of children with this anomaly is reported.
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Affiliation(s)
- P. Pavone
- University-Hospital Policlinico-Vittorio Emanuele
| | - Sung Yoon Cho
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - A.D. Praticò
- Department of Clinical and Experimental Medicine, Section of Pediatrics and Child Neuropsychiatry, University of Catania, Italy
| | | | - M. Ruggieri
- Department of Clinical and Experimental Medicine, Section of Pediatrics and Child Neuropsychiatry, University of Catania, Italy
| | - Dong-Kyu Jin
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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25
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Chronic treatment with a MEK inhibitor reverses enhanced excitatory field potentials in Syngap1+/− mice. Pharmacol Rep 2018; 70:777-783. [DOI: 10.1016/j.pharep.2018.02.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/14/2018] [Accepted: 02/21/2018] [Indexed: 01/21/2023]
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26
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López M, García-Oguiza A, Armstrong J, García-Cobaleda I, García-Miñaur S, Santos-Simarro F, Seidel V, Domínguez-Garrido E. Rubinstein-Taybi 2 associated to novel EP300 mutations: deepening the clinical and genetic spectrum. BMC MEDICAL GENETICS 2018; 19:36. [PMID: 29506490 PMCID: PMC5839060 DOI: 10.1186/s12881-018-0548-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 02/23/2018] [Indexed: 01/19/2023]
Abstract
Background Rubinstein-Taybi syndrome (RSTS) is a rare autosomal dominant neurodevelopmental disorder characterized by broad thumbs and halluces. RSTS is caused by mutations in CREBBP and in EP300 genes in 50–60% and 8%, respectively. Up to now, 76 RSTS-EP300 patients have been described. We present the clinical and molecular characterization of a cohort of RSTS patients carrying EP300 mutations. Methods Patients were selected from a cohort of 72 individuals suspected of RSTS after being negative in CREBBP study. MLPA and panel-based NGS EP300 were performed. Results Eight patients were found to carry EP300 mutations. Phenotypic characteristics included: intellectual disability (generally mild), postnatal growth retardation, infant feeding problems, psychomotor and language delay and typical facial dysmorphisms (microcephaly, downslanting palpebral fissures, columella below the alae nasi, and prominent nose). Broad thumbs and/or halluces were common, but angulated thumbs were only found in two patients. We identified across the gene novel mutations, including large deletion, frameshift mutations, nonsense, missense and splicing alterations, confirming de novo origin in all but one (the mother, possibly underdiagnosed, has short and broad thumbs and had learning difficulties). Conclusions The clinical evaluation of our patients corroborates that clinical features in EP300 are less marked than in CREBBP patients although it is difficult to establish a genotype-phenotype correlation although. It is remarkable that these findings are observed in a RSTS-diagnosed cohort; some patients harbouring EP300 mutations could present a different phenotype. Broadening the knowledge about EP300-RSTS phenotype may contribute to improve the management of patients and the counselling to the families.
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Affiliation(s)
- María López
- Molecular Diagnostic Unit, Fundación Rioja Salud, Logroño, La Rioja, Spain
| | | | - Judith Armstrong
- Servei de Medicina Genètica i Molecular, Institut de Recerca Pediàtrica and Department of Neurology Hospital Sant Joan de Déu (HSJD), CIBERER, Catalonia, Spain
| | - Inmaculada García-Cobaleda
- Unidad de Fertilidad y Diagnóstico Genético, Hospital Univ. Ntra. Sra. de La Candelaria, Santa Cruz de Tenerife, Spain
| | - Sixto García-Miñaur
- Sección de Genética Clínica, INGEMM (Instituto de Genética Médica y Molecular), U753, CIBERER, Madrid, Spain
| | - Fernando Santos-Simarro
- Sección de Genética Clínica, INGEMM (Instituto de Genética Médica y Molecular), U753, CIBERER, Madrid, Spain
| | - Verónica Seidel
- Clinical Genetics, Department of Pediatrics, Hospital General Universitario Gregorio Marañón, Madrid, Spain
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Milani D, Scuvera G, Gatti M, Tolva G, Bonarrigo F, Esposito S, Gervasini C. Perthes disease: A new finding in Floating-Harbor syndrome. Am J Med Genet A 2018; 176:703-706. [PMID: 29383823 DOI: 10.1002/ajmg.a.38605] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/26/2017] [Accepted: 12/16/2017] [Indexed: 11/11/2022]
Abstract
Floating-Harbor Syndrome (FHS; OMIM #136140) is an ultra-rare autosomal dominant genetic condition characterized by expressive language delay, short stature with delayed bone mineralization, a triangular face with a prominent nose, and deep-set eyes, and hand anomalies. First reported in 1973, FHS is associated with mutations in the SRCAP gene, which encodes SNF2-related CREBBP activator protein. Mutations in the CREBBP gene cause Rubinstein-Taybi Syndrome (RSTS; OMIM #180849, #613684), another rare disease characterized by broad thumbs and halluces, facial dysmorphisms, short stature, and intellectual disability, which has a phenotypic overlap with FHS. We describe a case of FHS associated with a novel SRCAP mutation and characterized by Perthes disease, a skeletal anomaly described in approximately 3% of patients with RSTS. Thus Perthes disease can be added to the list of clinical features that overlap between FHS and RSTS.
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Affiliation(s)
- Donatella Milani
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation University of Milan, Fondazione IRCSS Ca' Granda Ospedale Maggiorte Policlinico, Milan, Italy
| | - Giulietta Scuvera
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation University of Milan, Fondazione IRCSS Ca' Granda Ospedale Maggiorte Policlinico, Milan, Italy
| | - Marta Gatti
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation University of Milan, Fondazione IRCSS Ca' Granda Ospedale Maggiorte Policlinico, Milan, Italy
| | - Gianluca Tolva
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation University of Milan, Fondazione IRCSS Ca' Granda Ospedale Maggiorte Policlinico, Milan, Italy
| | - Francesca Bonarrigo
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation University of Milan, Fondazione IRCSS Ca' Granda Ospedale Maggiorte Policlinico, Milan, Italy
| | - Susanna Esposito
- Pediatric Clinic, Università degli Studi di Perugia, Perugia, Italy
| | - Cristina Gervasini
- Genetica Medica, Dip. Scienze della Salute, Università degli Studi di Milano, Milano, Italy
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Sy C, Henry J, Kura B, Brenner A, Grandhi R. Primary Diffuse Large B-Cell Lymphoma in a Patient with Rubinstein-Taybi Syndrome: Case Report and Review of the Literature. World Neurosurg 2017; 109:342-346. [PMID: 29042334 DOI: 10.1016/j.wneu.2017.10.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Rubinstein-Taybi syndrome (RSTS) is a rare, congenital syndrome that is known to be associated with neoplasms of various organ systems. Evaluation and treatment of such patients is challenging, given the cognitive delay and heterogeneity of pathologic presentations that define this syndrome. CASE DESCRIPTION Presented here is a case of a patient with RSTS, diagnosed at birth, who presented with subtle symptoms of lethargy and a change in behavior. He was found to have a large (7.0-cm × 4.7-cm), right-sided brain mass that was eventually diagnosed as a primary central nervous system lymphoma. CONCLUSIONS To the best of our knowledge, this is the first reported case of a primary central nervous system lymphoma presenting in a patient with RSTS. This was confirmed through microscopic and histologic studies. The large size attained by this mass in our patient highlights the increased scrutiny and surveillance needed to provide the best care for these patients. A multidisciplinary team approach is ideal as successful treatment of our patient using surgical debulking, appropriate chemotherapy, and close postoperative follow-up has resulted in an excellent clinical outcome.
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Affiliation(s)
- Christopher Sy
- Department of Neurosurgery, University of Texas Health San Antonio, San Antonio, Texas, USA.
| | - James Henry
- Department of Pathology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Bhavani Kura
- Department of Neurosurgery, Louisiana State University Health Science Center at Shreveport, Shreveport, Louisiana, USA
| | - Andrew Brenner
- Department of Hematology/Oncology, Cancer Therapy and Research Center, San Antonio, Texas, USA
| | - Ramesh Grandhi
- Department of Neurosurgery, University of Texas Health San Antonio, San Antonio, Texas, USA
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Villani A, Greer MLC, Kalish JM, Nakagawara A, Nathanson KL, Pajtler KW, Pfister SM, Walsh MF, Wasserman JD, Zelley K, Kratz CP. Recommendations for Cancer Surveillance in Individuals with RASopathies and Other Rare Genetic Conditions with Increased Cancer Risk. Clin Cancer Res 2017; 23:e83-e90. [DOI: 10.1158/1078-0432.ccr-17-0631] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/24/2017] [Accepted: 04/27/2017] [Indexed: 11/16/2022]
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30
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Lougaris V, Facchini E, Baronio M, Lorenzini T, Moratto D, Specchia F, Plebani A. Progressive severe B cell deficiency in pediatric Rubinstein-Taybi syndrome. Clin Immunol 2016; 173:181-183. [DOI: 10.1016/j.clim.2016.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 10/28/2016] [Accepted: 10/31/2016] [Indexed: 11/26/2022]
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