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Okamoto N, Yoshida S, Ogitani A, Etani Y, Yanagi K, Kaname T. Biallelic loss-of-function variants of EZH1 cause a novel developmental disorder with central precocious puberty. Am J Med Genet A 2024:e63726. [PMID: 38814056 DOI: 10.1002/ajmg.a.63726] [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: 12/30/2023] [Revised: 04/08/2024] [Accepted: 05/09/2024] [Indexed: 05/31/2024]
Abstract
Pathogenic variants of polycomb repressive complex-2 (PRC2) subunits are associated with overgrowth syndromes and neurological diseases. EZH2 is a major component of PRC2 and mediates the methylation of H3K27 trimethylation (H3K27me3). Germline variants of EZH2 have been identified as a cause of Weaver syndrome (WS), an overgrowth/intellectual disability (OGID) syndrome characterized by overgrowth, macrocephaly, accelerated bone age, intellectual disability (ID), and characteristic facial features. Germline variants of SUZ12 and EED, other components of PRC2, have also been reported in the WS or Weaver-like syndrome. EZH1 is a homolog of EZH2 that interchangeably associates with SUZ12 and EED. Recently, pathogenic variants of EZH1 have been reported in individuals with dominant and recessive neurodevelopmental disorders. We herein present sisters with biallelic loss-of-function variants of EZH1. They showed developmental delay, ID, and central precocious puberty, but not the features of WS or other OGID syndromes.
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Affiliation(s)
- Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Sayaka Yoshida
- Department of Pediatrics, Nara Prefecture General Medical Center, Nara, Japan
| | - Ayako Ogitani
- Department of Neonatal Intensive Care Unit, Nara Prefecture General Medical Center, Nara, Japan
| | - Yuri Etani
- Department of Gastroenterology, Nutrition and Endocrinology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Kumiko Yanagi
- Department of Genome Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Tadashi Kaname
- Department of Genome Medicine, National Center for Child Health and Development, Tokyo, Japan
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Arbustini E, Bozzani A, Prati F. Medial Artery Calcification: Is it a Disease, a Marker, or a Prognostic Predictor? JACC. ADVANCES 2023; 2:100652. [PMID: 38938703 PMCID: PMC11198088 DOI: 10.1016/j.jacadv.2023.100652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Affiliation(s)
- Eloisa Arbustini
- Scientific Department, Transplant Research Area and Centre for Inherited Cardiovascular Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Antonio Bozzani
- Vascular and Endovascular Surgery Unit, Department of Surgical Science, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Francesco Prati
- UniCamillus, Saint Camillus International University of Health Sciences, Rome, Italy
- Foundation “Centro Per La Lotta Contro L'Infarto” (CLI), Rome, Italy
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Okamoto N, Miya F, Tsunoda T, Kanemura Y, Saitoh S, Kato M, Yanagi K, Kaname T, Kosaki K. Four pedigrees with aminoacyl-tRNA synthetase abnormalities. Neurol Sci 2021; 43:2765-2774. [PMID: 34585293 DOI: 10.1007/s10072-021-05626-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 09/23/2021] [Indexed: 01/16/2023]
Abstract
Aminoacyl tRNA synthetases (ARSs) are highly conserved enzymes that link amino acids to their cognate tRNAs. Thirty-seven ARSs are known and their deficiencies cause various genetic disorders. Variants in some ARSs are associated with the autosomal dominant inherited form of axonal neuropathy, including Charcot-Marie-Tooth (CMT) disease. Variants of genes encoding ARSs often cause disorders in an autosomal recessive fashion. The clinical features of cytosolic ARS deficiencies are more variable, including systemic features. Deficiencies of ARSs localized in the mitochondria are often associated with neurological disorders including Leigh and early-onset epileptic syndromes. Whole exome sequencing (WES) is an efficient way to identify the genes causing various symptoms in patients. We identified 4 pedigrees with novel compound heterozygous variants in ARS genes (WARS1, MARS1, AARS2, and PARS2) by WES. Some unique manifestations were noted. The number of patients with ARSs has been increasing since the application of WES. Our findings broaden the known genetic and clinical spectrum associated with ARS variants.
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Affiliation(s)
- Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Izumi, Osaka, Japan.
| | - Fuyuki Miya
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Medical Science Mathematics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Tatsuhiko Tsunoda
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Medical Science Mathematics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Yonehiro Kanemura
- Department of Neurosurgery, National Hospital Organization Osaka National Hospital, Osaka, Japan.,Department of Biomedical Research and Innovation, Institute for Clinical Research, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Kumiko Yanagi
- Department of Genome Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Tadashi Kaname
- Department of Genome Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
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Nighoghossian N, Cho TH, Mechtouff L. Lenin's Stroke. Case Rep Neurol 2021; 13:384-387. [PMID: 34248574 PMCID: PMC8255750 DOI: 10.1159/000515657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/03/2021] [Indexed: 11/19/2022] Open
Abstract
Lenin's stroke remains a matter of debate. Here, we propose to assess the potential mechanisms. Lenin died on January 21, 1924 at the age of 53 years. Although some doctors suggested that the origin of his health problems was neurosyphilis, the autopsy findings were consistent with a severe atherosclerosis. This process might account for his recurrent ischemic strokes. In view of the family vascular history, an early hereditary atherosclerosis may be proposed.
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Affiliation(s)
- Norbert Nighoghossian
- Department of vascular neurology, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France.,CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Lyon 1, Bron, France
| | - Tae-Hee Cho
- Department of vascular neurology, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France.,CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Lyon 1, Bron, France
| | - Laura Mechtouff
- Department of vascular neurology, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France.,CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Lyon 1, Bron, France
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Cudrici CD, Newman KA, Ferrante EA, Huffstutler R, Carney K, Betancourt B, Miettinen M, Siegel R, Katz JD, Nesti LJ, St Hilaire C, Lakshmipathy D, Wen H, Bagheri MH, Boehm M, Brofferio A. Multifocal Calcific Periarthritis with Distinctive Clinical and Radiological Features in Patients with CD73 Deficiency. Rheumatology (Oxford) 2021; 61:163-173. [PMID: 33744914 DOI: 10.1093/rheumatology/keab270] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE Arterial calcification due to deficiency of CD73 (ACDC) is a hereditary autosomal recessive ectopic mineralization syndrome caused by loss-of-function mutations in the 5'-nucleotidase Ecto (NT5E) gene. Periarticular calcification has been reported but the clinical characterization of arthritis as well as the microstructure and chemical composition of periarticular calcifications and synovial fluid crystals has not been systematically investigated. METHODS Eight ACDC patients underwent extensive rheumatological and radiological evaluation over a period of 11 years. Periarticular and synovial biopsies were obtained from four patients. Characterization of crystal composition was evaluated by compensated polarized light microscopy, Alizarin red staining for synovial fluid along with x-ray diffraction and x-ray micro tomosynthesis for periarticular calcification. RESULTS Arthritis in ACDC patients has a clinical presentation of mixed erosive-degenerative joint changes with a median onset of articular symptoms at 17 years of age and progresses over time to the development of fixed deformities and functional limitations of small peripheral joints with eventually, larger joint and distinct axial involvement later in life. We have identified calcium pyrophosphate (CPP) and calcium hydroxyapatite (CHA) crystals in synovial fluid specimens and determined that CHA crystals are the principal component of periarticular calcifications. CONCLUSION This is the largest study in ACDC patients to describe erosive peripheral arthropathy and axial enthesopathic calcifications over a period of 11 years and the first to identify the composition of periarticular calcifications and synovial fluid crystals. ACDC should be considered among the genetic causes of early-onset osteoarthritis, as musculoskeletal disease signs may often precede vascular symptoms.
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Affiliation(s)
- Cornelia D Cudrici
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Kam A Newman
- National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, USA
| | - Elisa A Ferrante
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Rebecca Huffstutler
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Katherine Carney
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Blas Betancourt
- National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, USA.,University of Florida, Division of Rheumatology & Clinical Immunology, Department of Medicine, Gainesville, FL, USA
| | - Markku Miettinen
- National Institutes of Health, National Cancer Institute, Bethesda, MD, USA
| | - Richard Siegel
- National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, USA.,Novartis Institutes of Biomedical Research, Novartis Institutes of Biomedical Research, Translational Medicine, Autoimmunity, Transplantation and Inflammation Disease Area, Basel, CH USA
| | - James D Katz
- National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, USA
| | - Leon J Nesti
- Walter Reed National Military Medical Center, Clinical and Experimental Orthopaedics, Bethesda, MD, USA
| | - Cynthia St Hilaire
- University of Pittsburgh School of Medicine, Department of Medicine, Division of Cardiology, Department of Bioengineering, and Vascular Medicine Institute, Pittsburgh, PA, USA
| | - Deepak Lakshmipathy
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Han Wen
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Mohammad H Bagheri
- National Institutes of Health, Department of Radiology and Imaging Sciences, Clinical Center, Bethesda, MD, USA
| | - Manfred Boehm
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Alessandra Brofferio
- National Institutes of Health, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
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Rutsch F, Buers I, Nitschke Y. Hereditary Disorders of Cardiovascular Calcification. Arterioscler Thromb Vasc Biol 2020; 41:35-47. [PMID: 33176451 DOI: 10.1161/atvbaha.120.315577] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Arterial calcification is a common phenomenon in the elderly, in patients with atherosclerosis or renal failure and in diabetes. However, when present in very young individuals, it is likely to be associated with an underlying hereditary disorder of arterial calcification. Here, we present an overview of the few monogenic disorders presenting with early-onset cardiovascular calcification. These disorders can be classified according to the function of the respective disease gene into (1) disorders caused by an altered purine and phosphate/pyrophosphate metabolism, (2) interferonopathies, and (3) Gaucher disease. The finding of arterial calcification in early life should alert the clinician and prompt further genetic work-up to define the underlying genetic defect, to establish the correct diagnosis, and to enable appropriate therapy.
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Affiliation(s)
- Frank Rutsch
- Department of General Pediatrics, Muenster University Children's Hospital, Germany
| | - Insa Buers
- Department of General Pediatrics, Muenster University Children's Hospital, Germany
| | - Yvonne Nitschke
- Department of General Pediatrics, Muenster University Children's Hospital, Germany
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