1
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Liu APY, Chan GCF, Chung BHY, Yang W, Ng HK. Genome-wide DNA methylation profiling for central nervous system embryonal tumours in children: abridged secondary publication. Hong Kong Med J 2024; 30 Suppl 1:29-33. [PMID: 38413210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024] Open
Affiliation(s)
- A P Y Liu
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong SAR, China
| | - G C F Chan
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong SAR, China
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - W Yang
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - H K Ng
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China
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2
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Chung CCY, Wong WHS, Lee SL, Chung BHY. Client Service Receipt Inventory for rare genetic diseases in Hong Kong: abridged secondary publication. Hong Kong Med J 2024; 30 Suppl 1:23-26. [PMID: 38413208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024] Open
Affiliation(s)
- C C Y Chung
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - W H S Wong
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - S L Lee
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
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3
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Lam HY, Chan EYH, Tung JYL, Lee SLK, Fung JLF, Lee M, Chung BHY, Ma ALT. Importance of cascade family screening and precision medicine for patients with familial hyperkalaemia: a case report. Hong Kong Med J 2022; 28:406-408. [PMID: 38232967 DOI: 10.12809/hkmj219513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- H Y Lam
- Department of Paediatrics and Adolescent Medicine, Alice Ho Miu Ling Nethersole Hospital, Hong Kong
| | - E Y H Chan
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
| | - J Y L Tung
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
| | - S L K Lee
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
| | - J L F Fung
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong
| | - M Lee
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong
| | - A L T Ma
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
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4
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Liu APY, Fung MKL, Lee M, Fung JLF, Tsang MHY, Luk CW, Chung BHY, Chan GCF. Clinical and molecular features of pleuropulmonary blastoma in children in Hong Kong: case reports. Hong Kong Med J 2022; 28:328-330. [PMID: 35989435 DOI: 10.12809/hkmj219503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Affiliation(s)
- A P Y Liu
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - M K L Fung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - M Lee
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - J L F Fung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - M H Y Tsang
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - C W Luk
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - G C F Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
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5
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Chung BHY, Kan ASY, Chan KYK, Yang W, Tang MHY, Mak CCY, Leung GKC. Analytical validity and clinical utility of whole-genome sequencing for cytogenetically balanced chromosomal abnormalities in prenatal diagnosis: abridged secondary publication. Hong Kong Med J 2022; 28 Suppl 1:4-7. [PMID: 35260506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
Affiliation(s)
- B H Y Chung
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong
- Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong
| | - A S Y Kan
- Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong
- Prenatal Diagnostic Laboratory, Department of Obstetrics and Gynaecology, Tsan Yuk Hospital
| | - K Y K Chan
- Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong
- Prenatal Diagnostic Laboratory, Department of Obstetrics and Gynaecology, Tsan Yuk Hospital
| | - W Yang
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong
| | - M H Y Tang
- Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong
- Prenatal Diagnostic Laboratory, Department of Obstetrics and Gynaecology, Tsan Yuk Hospital
| | - C C Y Mak
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong
| | - G K C Leung
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong
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6
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Leung WY, Luk HM, Vardhanabhuti V, Gao Y, Hui KF, Lau WY, Young TPH, Li JTC, Fung ELW, Chiu ATG, Lo IFM, Chung BHY, Cheung YF, Chan SHS. Infantile to late adulthood onset facioscapulohumeral dystrophy type 1: a case series. Hong Kong Med J 2021; 27:444-449. [PMID: 34949732 DOI: 10.12809/hkmj209001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- W Y Leung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong
| | - H M Luk
- Clinical Genetic Service, Department of Health, Hong Kong SAR Government, Hong Kong
| | - V Vardhanabhuti
- Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong
| | - Y Gao
- Department of Medicine, Queen Mary Hospital, Hong Kong
| | - K F Hui
- Department of Medicine and Geriatrics, United Christian Hospital, Hong Kong
| | - W Y Lau
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - T P H Young
- Department of Medicine and Geriatrics, Ruttonjee & Tang Shiu Kin Hospitals, Hong Kong
| | - J T C Li
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong
| | - E L W Fung
- Department of Paediatrics, Prince of Wales Hospital, Hong Kong
| | - A T G Chiu
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong
| | - I F M Lo
- Clinical Genetic Service, Department of Health, Hong Kong SAR Government, Hong Kong
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong
| | - Y F Cheung
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong
| | - S H S Chan
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong
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7
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Chiu ATG, Pei SLC, Mak CCY, Leung GKC, Yu MHC, Lee SL, Vreeburg M, Pfundt R, van der Burgt I, Kleefstra T, Frederic TMT, Nambot S, Faivre L, Bruel AL, Rossi M, Isidor B, Küry S, Cogne B, Besnard T, Willems M, Reijnders MRF, Chung BHY. Okur-Chung neurodevelopmental syndrome: Eight additional cases with implications on phenotype and genotype expansion. Clin Genet 2018; 93:880-890. [PMID: 29240241 DOI: 10.1111/cge.13196] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/20/2017] [Accepted: 12/10/2017] [Indexed: 12/27/2022]
Abstract
Okur-Chung syndrome is a neurodevelopmental condition attributed to germline CSNK2A1 pathogenic missense variants. We present 8 unreported subjects with the above syndrome, who have recognizable dysmorphism, varying degrees of developmental delay and multisystem involvement. Together with 6 previously reported cases, we present a case series of 7 female and 7 male subjects, highlighting the recognizable facial features of the syndrome (microcephaly, hypertelorism, epicanthic fold, ptosis, arched eyebrows, low set ears, ear fold abnormality, broad nasal bridge and round face) as well as frequently occurring clinical features including neurodevelopmental delay (93%), gastrointestinal (57%), musculoskeletal (57%) and immunological (43%) abnormalities. The variants reported in this study are evolutionary conserved and absent in the normal population. We observed that the CSNK2A1 gene is relatively intolerant to missense genetic changes, and most variants are within the protein kinase domain. All except 1 variant reported in this cohort are spatially located on the binding pocket of the holoenzyme. We further provide key recommendations on the management of Okur-Chung syndrome. To conclude, this is the second case series on Okur-Chung syndrome, and an in-depth review of the phenotypic features and genomic findings of the condition with suggestions on clinical management.
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Affiliation(s)
- A T G Chiu
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong.,Department of Paediatrics, Duchess of Kent Children's Hospital, Hong Kong, Hong Kong
| | - S L C Pei
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong
| | - C C Y Mak
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong
| | - G K C Leung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong
| | - M H C Yu
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong
| | - S L Lee
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong.,Department of Paediatrics, Duchess of Kent Children's Hospital, Hong Kong, Hong Kong
| | - M Vreeburg
- Department of Clinical Genetics and School for Oncology & Developmental Biology (GROW), Maastricht University Medical Center, Maastricht, the Netherlands
| | - R Pfundt
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - I van der Burgt
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - T Kleefstra
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Nijmegen, the Netherlands
| | - T M-T Frederic
- Centre de Génétique et Centre de référence, Anomalies du Développement et Syndromes Malformatifs, Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon, France.,Laboratoire de Génétique Moléculaire, Plateau Technique de Biologie, Centre Hospitalier Universitaire de Dijon, Dijon, France.,INSERM UMR 1231 GAD, Génétique des Anomalies du Développement, Dijon, France
| | - S Nambot
- Centre de Génétique et Centre de référence, Anomalies du Développement et Syndromes Malformatifs, Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon, France.,Laboratoire de Génétique Moléculaire, Plateau Technique de Biologie, Centre Hospitalier Universitaire de Dijon, Dijon, France
| | - L Faivre
- Centre de Génétique et Centre de référence, Anomalies du Développement et Syndromes Malformatifs, Hôpital d'Enfants, Centre Hospitalier Universitaire de Dijon, Dijon, France
| | - A-L Bruel
- INSERM UMR 1231 GAD, Génétique des Anomalies du Développement, Dijon, France
| | - M Rossi
- Service de Génétique, Centre de Référence Anomalies du Développement, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, Centre de Recherche en Neurosciences de Lyon, INSERM U1028, CNRS UMR5292, Université Claude Bernard Lyon 1, Lyon, France
| | - B Isidor
- Service de Génétique Médicale, CHU Nantes, Nantes, France.,INSERM, UMR-S 957, Nantes, France
| | - S Küry
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - B Cogne
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - T Besnard
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - M Willems
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, Plateforme Recherche de Microremaniements Chromosomiques, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Faculté de Médecine Montpellier-Nîmes, Université de Montpellier, Montpellier, France
| | - M R F Reijnders
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Nijmegen, the Netherlands
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, Hong Kong.,Department of Paediatrics, Duchess of Kent Children's Hospital, Hong Kong, Hong Kong
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Michel ME, Konczyk DJ, Yeung KS, Murillo R, Vivero MP, Hall AM, Zurakowski D, Adams D, Gupta A, Huang AY, Chung BHY, Warman ML. Causal somatic mutations in urine DNA from persons with the CLOVES subgroup of the PIK3CA-related overgrowth spectrum. Clin Genet 2018; 93:1075-1080. [PMID: 29231959 DOI: 10.1111/cge.13195] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 01/05/2023]
Abstract
Congenital lipomatous overgrowth with vascular, epidermal, and skeletal (CLOVES) anomalies and Klippel-Trenaunay (KTS) syndromes are caused by somatic gain-of-function mutations in PIK3CA, encoding a catalytic subunit of phosphoinositide 3-kinase. Affected tissue is needed to find mutations, as mutant alleles are not detectable in blood. Because some patients with CLOVES develop Wilms tumor, we tested urine as a source of DNA for mutation detection. We extracted DNA from the urine of 17 and 24 individuals with CLOVES and KTS, respectively, and screened 5 common PIK3CA mutation hotspots using droplet digital polymerase chain reaction. Six of 17 CLOVES participants (35%) had mutant PIK3CA alleles in urine. Among 8 individuals in whom a mutation had been previously identified in affected tissue, 4 had the same mutant allele in the urine. One study participant with CLOVES had been treated for Wilms tumor. We detected the same PIK3CA mutation in her affected tissue, urine, and tumor, indicating Wilms tumors probably arise from PIK3CA mutant cells in patients with CLOVES. No urine sample from a participant with KTS had detectable PIK3CA mutations. We suggest that urine, which has the advantage of being collected non-invasively, is useful when searching for mutations in individuals with CLOVES syndrome.
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Affiliation(s)
- M E Michel
- Department of Orthopaedic Surgery, Orthopaedic Research Laboratories, Boston Children's Hospital, Boston, Massachusetts
| | - D J Konczyk
- Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts
| | - K S Yeung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - R Murillo
- Department of Orthopaedic Surgery, Orthopaedic Research Laboratories, Boston Children's Hospital, Boston, Massachusetts
| | - M P Vivero
- Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts
| | - A M Hall
- Department of Anesthesia, Boston Children's Hospital, Boston, Massachusetts
| | - D Zurakowski
- Department of Anesthesia, Boston Children's Hospital, Boston, Massachusetts
| | - D Adams
- Division of Hematology/Oncology, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts
| | - A Gupta
- Department of Pathology and Lab Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - A Y Huang
- Department of Orthopaedic Surgery, Orthopaedic Research Laboratories, Boston Children's Hospital, Boston, Massachusetts
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - M L Warman
- Department of Orthopaedic Surgery, Orthopaedic Research Laboratories, Boston Children's Hospital, Boston, Massachusetts
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9
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Choufani S, Cytrynbaum C, Chung BHY, Turinsky AL, Grafodatskaya D, Chen YA, Cohen ASA, Dupuis L, Butcher DT, Siu MT, Luk HM, Lo IFM, Lam STS, Caluseriu O, Stavropoulos DJ, Reardon W, Mendoza-Londono R, Brudno M, Gibson WT, Chitayat D, Weksberg R. NSD1 mutations generate a genome-wide DNA methylation signature. Nat Commun 2015; 6:10207. [PMID: 26690673 PMCID: PMC4703864 DOI: 10.1038/ncomms10207] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 11/13/2015] [Indexed: 01/07/2023] Open
Abstract
Sotos syndrome (SS) represents an important human model system for the study of epigenetic regulation; it is an overgrowth/intellectual disability syndrome caused by mutations in a histone methyltransferase, NSD1. As layered epigenetic modifications are often interdependent, we propose that pathogenic NSD1 mutations have a genome-wide impact on the most stable epigenetic mark, DNA methylation (DNAm). By interrogating DNAm in SS patients, we identify a genome-wide, highly significant NSD1+/−-specific signature that differentiates pathogenic NSD1 mutations from controls, benign NSD1 variants and the clinically overlapping Weaver syndrome. Validation studies of independent cohorts of SS and controls assigned 100% of these samples correctly. This highly specific and sensitive NSD1+/− signature encompasses genes that function in cellular morphogenesis and neuronal differentiation, reflecting cardinal features of the SS phenotype. The identification of SS-specific genome-wide DNAm alterations will facilitate both the elucidation of the molecular pathophysiology of SS and the development of improved diagnostic testing. Sotos syndrome is an growth syndrome characterized by advanced growth in childhood, characteristic facial appearance and intellectual disability. Here the authors identify a genome-wide DNA methylation signature that accurately diagnoses Sotos Syndrome and distinguishes it from similar conditions.
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Affiliation(s)
- S Choufani
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8
| | - C Cytrynbaum
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Molecular Genetics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
| | - B H Y Chung
- Department of Pediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, 6/F, William MW Mong Block, 21 Sassoon Road, Pokfulam, Hong Kong
| | - A L Turinsky
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Centre for Computational Medicine, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8
| | - D Grafodatskaya
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8
| | - Y A Chen
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Institute of Medical Science, School of Graduate Studies, University of Toronto, 2374-1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
| | - A S A Cohen
- Department of Medical Genetics, UBC, Child and Family Research Institute, 950W 28th Avenue, Vancouver, British Columbia V5Z 4H4, USA
| | - L Dupuis
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Molecular Genetics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
| | - D T Butcher
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8
| | - M T Siu
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8
| | - H M Luk
- Clinical Genetics Service, Department of Health, Cheung Sha Wan Jockey Club Clinic, 1/F-3/F, 2 Kwong Lee Road, Sham Shui Po, Kowloon, Hong Kong
| | - I F M Lo
- Clinical Genetics Service, Department of Health, Cheung Sha Wan Jockey Club Clinic, 1/F-3/F, 2 Kwong Lee Road, Sham Shui Po, Kowloon, Hong Kong
| | - S T S Lam
- Clinical Genetics Service, Department of Health, Cheung Sha Wan Jockey Club Clinic, 1/F-3/F, 2 Kwong Lee Road, Sham Shui Po, Kowloon, Hong Kong
| | - O Caluseriu
- Department of Medical Genetics, University of Alberta, 116 Street and 85 Avenue, Edmonton, Alberta, Canada T6G 2R3
| | - D J Stavropoulos
- Pediatric Laboratory Medicine, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Laboratory Medicine and Pathobiology, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
| | - W Reardon
- Our Lady's Hospital for Sick Children, Crumlin D12 N512 Ireland
| | - R Mendoza-Londono
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Pediatrics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
| | - M Brudno
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Centre for Computational Medicine, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Computer Science, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
| | - W T Gibson
- Department of Medical Genetics, UBC, Child and Family Research Institute, 950W 28th Avenue, Vancouver, British Columbia V5Z 4H4, USA
| | - D Chitayat
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Molecular Genetics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1.,Department of Pediatrics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1.,Prenatal Diagnosis and Medical Genetics Program, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario, Canada M5G 1X5
| | - R Weksberg
- Program in Genetics and Genome Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.,Department of Molecular Genetics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1.,Institute of Medical Science, School of Graduate Studies, University of Toronto, 2374-1 King's College Circle, Toronto, Ontario, Canada M5S 1A8.,Department of Pediatrics, University of Toronto, 27 King's College Circle, Toronto, Ontario, Canada M5S 1A1
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10
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Avila M, Dyment DA, Sagen JV, St-Onge J, Moog U, Chung BHY, Mo S, Mansour S, Albanese A, Garcia S, Martin DO, Lopez AA, Claudi T, König R, White SM, Sawyer SL, Bernstein JA, Slattery L, Jobling RK, Yoon G, Curry CJ, Merrer ML, Luyer BL, Héron D, Mathieu-Dramard M, Bitoun P, Odent S, Amiel J, Kuentz P, Thevenon J, Laville M, Reznik Y, Fagour C, Nunes ML, Delesalle D, Manouvrier S, Lascols O, Huet F, Binquet C, Faivre L, Rivière JB, Vigouroux C, Njølstad PR, Innes AM, Thauvin-Robinet C. Clinical reappraisal of SHORT syndrome with PIK3R1 mutations: toward recommendation for molecular testing and management. Clin Genet 2015; 89:501-506. [PMID: 26497935 DOI: 10.1111/cge.12688] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/10/2015] [Accepted: 10/16/2015] [Indexed: 12/01/2022]
Abstract
SHORT syndrome has historically been defined by its acronym: short stature (S), hyperextensibility of joints and/or inguinal hernia (H), ocular depression (O), Rieger abnormality (R) and teething delay (T). More recently several research groups have identified PIK3R1 mutations as responsible for SHORT syndrome. Knowledge of the molecular etiology of SHORT syndrome has permitted a reassessment of the clinical phenotype. The detailed phenotypes of 32 individuals with SHORT syndrome and PIK3R1 mutation, including eight newly ascertained individuals, were studied to fully define the syndrome and the indications for PIK3R1 testing. The major features described in the SHORT acronym were not universally seen and only half (52%) had four or more of the classic features. The commonly observed clinical features of SHORT syndrome seen in the cohort included intrauterine growth restriction (IUGR) <10th percentile, postnatal growth restriction, lipoatrophy and the characteristic facial gestalt. Anterior chamber defects and insulin resistance or diabetes were also observed but were not as prevalent. The less specific, or minor features of SHORT syndrome include teething delay, thin wrinkled skin, speech delay, sensorineural deafness, hyperextensibility of joints and inguinal hernia. Given the high risk of diabetes mellitus, regular monitoring of glucose metabolism is warranted. An echocardiogram, ophthalmological and hearing assessments are also recommended.
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Affiliation(s)
- M Avila
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - D A Dyment
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J V Sagen
- Hormone Laboratory, Haukeland University Hospital, Bergen, Norway.,KJ Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - J St-Onge
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - U Moog
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mo
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mansour
- SW Thames Regional Genetics Service, St. George's Hospital Medical School, London, SW17 0RE, UK
| | - A Albanese
- Paediatric Endocrine Unit, St George's Hospital, London, UK
| | - S Garcia
- Institute of Medical and Molecular Genetics (INGEMM), La Paz University Hospital, Madrid, Spain.,Instituto de Salud Carlos III, Unit 753, Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - D O Martin
- Department of Ophthalmology, Hospital Central de la Cruz Roja San Jose y Santa Adela, Madrid, Spain
| | - A A Lopez
- Puerta de Hierro, University Hospital, Madrid, Spain
| | - T Claudi
- Department of Medicine, Bodø, Norway
| | - R König
- Department of Human Genetics, University of Frankfurt, Frankfurt, Germany
| | - S M White
- Victorian Clinical genetics Services, Murdoch Childrens Research institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - S L Sawyer
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J A Bernstein
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - L Slattery
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - R K Jobling
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - G Yoon
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - C J Curry
- Genetic Medicine/, University of California, San Francisco, CA, USA
| | - M L Merrer
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - B L Luyer
- Service de Pédiatrie, CH Le Havre, Le Havre, France
| | - D Héron
- Département de Génétique et Centre de Référence "Déficiences intellectuelles de causes rares", Paris, France
| | | | - P Bitoun
- Service de Pédiatrie, Bondy, France
| | - S Odent
- Service de Génétique clinique, Rennes, France.,UMR CNRS 6290 IGDR, Universitė Rennes, Rennes, France
| | - J Amiel
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - P Kuentz
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France
| | - J Thevenon
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - M Laville
- Département d'Endocrinologie, Diabétologie et Nutrition, Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France.,Institut National de la Santé et de la Recherche Médicale Unité 1060, Centre Européen pour la nutrition et la Santé, Centre de Recherche en Nutrition Humaine Rhône-Alpes, Université Claude Bernard Lyon, Pierre-Bénite, France
| | - Y Reznik
- Service d'Endocrinologie, Centre Hospitalier Universitaire Côte-de-Nacre, Caen, France
| | - C Fagour
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - M-L Nunes
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - D Delesalle
- Service de pédiatrie, CH de Valencienne, Valencienne, France
| | - S Manouvrier
- Centre de Référence CLAD NdF - Service de génétique clinique Guy Fontaine, CHRU de Lille - Hôpital Jeanne de Flandre, Lille, France
| | - O Lascols
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - F Huet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - C Binquet
- Centre d'Investigation Clinique-Epidémiologique Clinique/essais cliniques du CHU de Dijon, Dijon, France
| | - L Faivre
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - J-B Rivière
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - C Vigouroux
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - P R Njølstad
- Department of Pediatrics, Haukeland, University Hospital, Bergen, Norway
| | - A M Innes
- Department of Medical Genetics, University of Calgary, Calgary, Canada.,Alberta Children's Hospital Research Institute for Child and Maternal Health, University of Calgary, Calgary, Canada
| | - C Thauvin-Robinet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
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Chung BHY, Chan GCF, Lee TL, Kwok JSY, Chiang AKS, Ho HK, Ha SY, Lau YL. Chronic benign neutropenia among Chinese children. Hong Kong Med J 2004; 10:231-6. [PMID: 15299167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
OBJECTIVE To delineate the clinical behaviour of chronic benign neutropenia in Chinese children in Hong Kong. DESIGN Retrospective study. SETTING University teaching hospital, Hong Kong. PATIENTS All infants and children with absolute neutrophil count of 1.5 x 10(9) /L or lower for more than 3 months. MAIN OUTCOME MEASURES Development of significant infection, and achievement of remission. RESULTS Twenty-four children with chronic benign neutropenia were identified between 1992 and 2001. Their median age of diagnosis was 9 months. The mean (standard deviation) initial absolute neutrophil count was 0.28 x 10(9) /L (0.24 x 10(9) /L). Twenty-three patients presented with infection. Of the 19 patients tested, four (21%) were positive for anti-neutrophil antibodies. Bone marrow examination was performed in 17 patients: nine had normal results, but six showed evidence of peripheral consumption, one showed late maturation arrest at band stage, and one showed phagocytosis of myeloid cells by histiocytes. The overall hospitalised infection rate was 51.6 episodes per 1000 patient-months. Ten percent of cases were considered 'significant' infections and required hospital admission with either surgical intervention or intravenous therapy (antibiotics or fluid replacement). In the first year of diagnosis, more than 80% of patients had their lowest absolute neutrophil count (mean, 0.16 x 10(9) /L; standard deviation, 0.11 x 10(9) /L). Granulocyte-colony stimulating factor was used to treat three patients and induced transient elevation of absolute neutrophil count in all three. The projected remission rate was 55.4% at 3 years. Even for those with persistent disease, there was significant recovery in absolute neutrophil count to a mean of 0.5 x 10(9) /L (P<0.01). CONCLUSIONS Patients with chronic benign neutropenia experienced a relatively benign clinical course regardless of their remission status. Only a small proportion of patients developed significant infections. A multi-centre prospective study may help identify predictive factors of remission.
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Affiliation(s)
- B H Y Chung
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong
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Chung BHY, Ha SY, Chan GCF, Chiang A, Lee TL, Ho HK, Lee CY, Luk CW, Lau YL. Klebsiella infection in patients with thalassemia. Clin Infect Dis 2003; 36:575-9. [PMID: 12594637 DOI: 10.1086/367656] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2002] [Accepted: 11/15/2002] [Indexed: 12/29/2022] Open
Abstract
Klebsiella infection has previously been reported in a few patients with transfusion-dependent thalassemia. The incidence and clinical spectrum of this infection in our cohort of patients were reviewed retrospectively. Among 160 patients observed for 12 years, there were 15 episodes of Klebsiella infection that occurred in 12 patients (7.5%), resulting in an incidence of 0.78 infections per 100 patient-years. The clinical spectrum included sinusitis (4 cases), intracranial infection (5 cases), septicemia (4 cases), and abscesses of the liver, lung, kidney, and parotid gland (1 case each). Three patients had recurrent infections involving different sites, 2 (16%) died of fulminant septicemia, and 3 (25%) had significant permanent neurological deficits. The antibiotic susceptibility pattern for the isolates was similar to the pattern for isolates recovered in the community. With regard to predisposing factors, iron overload and liver function derangement were found to be significant on univariate analysis (P=.046 and P=.049, respectively) but insignificant on multivariate analysis. Klebsiella infection was a serious and frequently encountered complication in our patients with transfusion-dependent thalassemia, resulting in high mortality and morbidity rates.
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Affiliation(s)
- B H Y Chung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
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