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Huybrechts Y, Appelman-Dijkstra NM, Steenackers E, Van Beylen W, Mortier G, Hendrickx G, Van Hul W. A Mosaic Variant in CTNNB1/β-catenin as a Novel Cause for Osteopathia Striata With Cranial Sclerosis. J Clin Endocrinol Metab 2024; 109:1891-1898. [PMID: 38173341 DOI: 10.1210/clinem/dgad757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/22/2023] [Accepted: 12/26/2023] [Indexed: 01/05/2024]
Abstract
CONTEXT Osteopathia striata with cranial sclerosis (OSCS) is a rare bone disorder with X-linked dominant inheritance, characterized by a generalized hyperostosis in the skull and long bones and typical metaphyseal striations in the long bones. So far, loss-of-function variants in AMER1 (also known as WTX or FAM123B), encoding the APC membrane recruitment protein 1 (AMER1), have been described as the only molecular cause for OSCS. AMER1 promotes the degradation of β-catenin via AXIN stabilization, acting as a negative regulator of the WNT/β-catenin signaling pathway, a central pathway in bone formation. OBJECTIVE In this study, we describe a Dutch adult woman with an OSCS-like phenotype, namely, generalized high bone mass and characteristic metaphyseal striations, but no genetic variant affecting AMER1. RESULTS Whole exome sequencing led to the identification of a mosaic missense variant (c.876A > C; p.Lys292Asn) in CTNNB1, coding for β-catenin. The variant disrupts an amino acid known to be crucial for interaction with AXIN, a key factor in the β-catenin destruction complex. Western blotting experiments demonstrate that the p.Lys292Asn variant does not significantly affect the β-catenin phosphorylation status, and hence stability in the cytoplasm. Additionally, luciferase reporter assays were performed to investigate the effect of p.Lys292Asn β-catenin on canonical WNT signaling. These studies indicate an average 70-fold increase in canonical WNT signaling activity by p.Lys292Asn β-catenin. CONCLUSION In conclusion, this study indicates that somatic variants in the CTNNB1 gene could explain the pathogenesis of unsolved cases of osteopathia striata.
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Affiliation(s)
- Yentl Huybrechts
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
| | - Natasha M Appelman-Dijkstra
- Department of Internal Medicine, Division Endocrinology, Leiden University Medical Center, 2300 Leiden, The Netherlands
| | - Ellen Steenackers
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
| | - Wouter Van Beylen
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
| | - Geert Mortier
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
- Laboratory for Skeletal Dysplasia Research, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium
- Center for Human Genetics, University Hospital Leuven, 3000 Leuven, Belgium
| | - Gretl Hendrickx
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
- Laboratory for Skeletal Dysplasia Research, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium
| | - Wim Van Hul
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650 Edegem, Belgium
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Abu-El-Haija A, Dillahunt K, Safina N, Aldeeri A, Glavan T, Mihalek I, Shinawi M. Osteopathia striata with cranial sclerosis as a cancer predisposition syndrome: The first report of neuroblastoma and review of all cancers in OSCS. Am J Med Genet A 2024:e63709. [PMID: 38801192 DOI: 10.1002/ajmg.a.63709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/22/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024]
Abstract
Osteopathia Striata with Cranial Sclerosis (OSCS) is a rare genetic condition primarily characterized by metaphyseal striations of long bones, bone sclerosis, macrocephaly, and other congenital anomalies. It is caused by pathogenic variants in AMER1, a tumor suppressor and a WNT signaling repressor gene with key roles in tissue regeneration, neurodevelopment, tumorigenesis, and other developmental processes. While somatic AMER1 pathogenic variants have frequently been identified in several tumor types (e.g., Wilms tumor and colorectal cancer), whether OSCS (i.e., with AMER1 germline variants) is a tumor predisposition syndrome is not clear, with only nine cases reported with tumors. We here report the first case of neuroblastoma diagnosed in a male child with OSCS, review all previously reported tumors diagnosed in individuals with OSCS, and discuss potential tumorigenic mechanisms of AMER1. Our report adds to the accumulating evidence suggesting OSCS is a tumor predisposition condition, highlighting the importance of maintaining a high index of suspicion for the associated tumors when evaluating patients with OSCS. Importantly, Wilms tumor stands out as the most commonly observed tumor in OSCS patients, underscoring the need for regular surveillance.
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Affiliation(s)
- Aya Abu-El-Haija
- Division of Medical Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, USA
- Harvard Medical School, Boston, USA
| | - Kyle Dillahunt
- Division of Medical Genetics and Genomics, Department of Pediatrics, University of Iowa, Iowa City, USA
| | - Nicole Safina
- Division of Medical Genetics and Genomics, Department of Pediatrics, University of Iowa, Iowa City, USA
- Department of Pediatrics, UI Stead Family Children's Hospital, Iowa City, USA
| | - Abdulrahman Aldeeri
- Division of Medical Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, USA
- Harvard Medical School, Boston, USA
- Department of Internal Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Tomislav Glavan
- Department of Molecular Medicine and Biotechnology, University of Rijeka, Rijeka, Croatia
| | - Ivana Mihalek
- Department of Molecular Medicine and Biotechnology, University of Rijeka, Rijeka, Croatia
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, USA
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Scrimshaw L, Gorman K, Mansour S, Ganesan V, Sabir A. Moyamoya disease/cerebral vasculopathy in osteopathia striata with cranial sclerosis: a rare but important complication. Clin Dysmorphol 2024; 33:31-37. [PMID: 38037992 DOI: 10.1097/mcd.0000000000000479] [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: 12/02/2023]
Abstract
Osteopathia striata with cranial sclerosis (OSCS) is a rare X-linked dominant sclerosing osteodysplasia, due to AMER1 pathogenic variants. Characteristic features include craniofacial sclerosis and long-bone metaphyseal striations. Moyamoya disease (a type of progressive cerebral vasculopathy) and other types of cerebral vascular disease are not currently clearly associated with OSCS (except for two separate case reports), and can often first present with stroke. Through informal networks with UK-based bone experts and the UK skeletal dysplasia group, three cases from the UK and Ireland were identified. Medical literature was also reviewed to identify the known cases of OSCS with the described complications. We report four females, in whom OSCS and cerebral vasculopathy co-exist, with varying clinical outcomes. There appears to be an emerging association between OSCS and cerebral vasculopathy, which pre-disposes patients to stroke. Given this, screening OSCS patients for cerebral vasculopathy may be of value, especially pre-surgery. Further research regarding optimal screening and management is needed. The mechanism of cerebral vasculopathy and its progression remain unclear.
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Affiliation(s)
- Lucy Scrimshaw
- Birmingham Children's Hospital, Birmingham Women and Children's NHS Foundation Trust, Birmingham, UK
| | - Kathleen Gorman
- Department of Neurology and Clinical Neurophysiology, Children's Health Ireland at Temple Street
- School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Sahar Mansour
- Molecular and Clinical Sciences Research Institute, St. George's University of London
- South West Thames Centre for Genomics, St. George's University Hospitals NHS Foundation Trust
| | - Vijeya Ganesan
- Neurology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London
| | - Ataf Sabir
- Birmingham Children's Hospital, Birmingham Women and Children's NHS Foundation Trust, Birmingham, UK
- West Midlands Regional Clinical Genetics Unit, Birmingham Women's and Children's NHS FT
- Institute of Cancer and Genomics, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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4
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Hu JCW, Abdelhakim AH, North VS, Garcia MD, Lustig MJ, Kazim M, Odel JG. Osteopathia striata with cranial sclerosis causing a compressive optic neuropathy. Ophthalmic Genet 2023; 44:496-500. [PMID: 36446546 DOI: 10.1080/13816810.2022.2144902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 12/02/2022]
Abstract
BACKGROUND Osteopathia striata combined with cranial sclerosis (OS-CS) is an inherited skeletal dysplasia that manifests with macrocephaly, orofacial abnormalities, thickened craniofacial bones, and vertically oriented radiodensities of the long bones. CASE REPORT Here, we present a severe case of OS-CS in a 4-year-old girl causing optic neuropathy as shown by radiographic evidence, ophthalmic findings, and histopathology. Previous genetic testing in this patient revealed a de novo heterozygous mutation in AMER1 (c.1057C>T, p.Arg353Ter). Although the patient had a pre-existing, appropriately functioning, ventriculoperitoneal (VP) shunt, a subsequent MRI of the brain and orbits showed narrowing of the bilateral optic nerve canals secondary to osseous thickening causing bilateral optic nerve atrophy, worse on the left. The patient underwent staged bilateral orbital osteotomies, optic canal decompression, and bilateral frontal craniotomy, and at 11 months postoperatively, her vision remained stable. Conclusions: While up to 50% of the patients with OS-CS may experience hearing loss due to cranial nerve compression, we present a case of severe visual loss secondary to OS-CS-associated optic nerve compression.
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Affiliation(s)
- Jennifer C W Hu
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
| | - Aliaa H Abdelhakim
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
| | - Victoria S North
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
| | - Maria D Garcia
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
| | - Marc J Lustig
- Pediatric Ophthalmic Consultants of New York, New York, New York, USA
| | - Michael Kazim
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
| | - Jeffrey G Odel
- Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, USA
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Terhal P, Venhuizen AJ, Lessel D, Tan WH, Alswaid A, Grün R, Alzaidan HI, von Kroge S, Ragab N, Hempel M, Kubisch C, Novais E, Cristobal A, Tripolszki K, Bauer P, Fischer-Zirnsak B, Nievelstein RAJ, van Dijk A, Nikkels P, Oheim R, Hahn H, Bertoli-Avella A, Maurice MM, Kornak U. AXIN1 bi-allelic variants disrupting the C-terminal DIX domain cause craniometadiaphyseal osteosclerosis with hip dysplasia. Am J Hum Genet 2023; 110:1470-1481. [PMID: 37582359 PMCID: PMC10502735 DOI: 10.1016/j.ajhg.2023.07.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/17/2023] Open
Abstract
Sclerosing skeletal dysplasias result from an imbalance between bone formation and resorption. We identified three homozygous, C-terminally truncating AXIN1 variants in seven individuals from four families affected by macrocephaly, cranial hyperostosis, and vertebral endplate sclerosis. Other frequent findings included hip dysplasia, heart malformations, variable developmental delay, and hematological anomalies. In line with AXIN1 being a central component of the β-catenin destruction complex, analyses of primary and genome-edited cells harboring the truncating variants revealed enhanced basal canonical Wnt pathway activity. All three AXIN1-truncating variants resulted in reduced protein levels and impaired AXIN1 polymerization mediated by its C-terminal DIX domain but partially retained Wnt-inhibitory function upon overexpression. Addition of a tankyrase inhibitor attenuated Wnt overactivity in the AXIN1-mutant model systems. Our data suggest that AXIN1 coordinates the action of osteoblasts and osteoclasts and that tankyrase inhibitors can attenuate the effects of AXIN1 hypomorphic variants.
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Affiliation(s)
- Paulien Terhal
- Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Centre Utrecht, 3584EA Utrecht, the Netherlands.
| | - Anton J Venhuizen
- Center for Molecular Medicine and Oncode Institute, University Medical Centre Utrecht, 3584CG Utrecht, the Netherlands
| | - Davor Lessel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany; Institute of Human Genetics, University Hospital Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria
| | - Wen-Hann Tan
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Abdulrahman Alswaid
- Department of Pediatrics, King Abdullah Specialized Children's Hospital, Riyadh 14611, Saudi Arabia; King Saud Bin Abdulaziz University For Health Sciences, Riyadh 22490, Saudi Arabia
| | - Regina Grün
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Hamad I Alzaidan
- Medical Genetics Department, King Faisal Specialist Hospital and Research Center, Alfaisal University, Riyadh 11211, Saudi Arabia
| | - Simon von Kroge
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 22529 Hamburg, Germany
| | - Nada Ragab
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Maja Hempel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany; Institute of Human Genetics, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Christian Kubisch
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Eduardo Novais
- Department of Orthopedic Surgery, Boston Children's Hospital, Boston, MA 02115, USA
| | - Alba Cristobal
- Center for Molecular Medicine and Oncode Institute, University Medical Centre Utrecht, 3584CG Utrecht, the Netherlands
| | | | - Peter Bauer
- Centogene GmbH, 18055 Rostock, Germany; University Hospital Rostock, Internal Medicine, Hemato-oncology, 18057 Rostock, Germany
| | - Björn Fischer-Zirnsak
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Rutger A J Nievelstein
- Department of Radiology & Nuclear Medicine, University Medical Centre Utrecht, 3584CX Utrecht, the Netherlands
| | - Atty van Dijk
- Expert Center for Skeletal Dysplasia, Wilhelmina Children's Hospital, University Medical Center Utrecht, 3584EA Utrecht, the Netherlands
| | - Peter Nikkels
- Department of Pathology, University Medical Centre Utrecht, 3584CX Utrecht, the Netherlands
| | - Ralf Oheim
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 22529 Hamburg, Germany
| | - Heidi Hahn
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | | | - Madelon M Maurice
- Center for Molecular Medicine and Oncode Institute, University Medical Centre Utrecht, 3584CG Utrecht, the Netherlands
| | - Uwe Kornak
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany; Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
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6
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Yamagishi H, Monden Y, Michigami T, Tachikawa K, Osaka H, Nozaki Y, Tajima T. A case of osteopathia striata with cranial sclerosis with facial nerve palsies. Pediatr Int 2023; 65:e15648. [PMID: 37804062 DOI: 10.1111/ped.15648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/21/2023] [Accepted: 08/07/2023] [Indexed: 10/08/2023]
Affiliation(s)
| | - Yukifumi Monden
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Toshimi Michigami
- Department of Bone and Mineral Research, Research Institute, Osaka Women's and Children's Hospital, Osaka Prefectural Hospital Organization, Izumi, Japan
| | - Kanako Tachikawa
- Department of Bone and Mineral Research, Research Institute, Osaka Women's and Children's Hospital, Osaka Prefectural Hospital Organization, Izumi, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Yasuyuki Nozaki
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
- Department of Pediatrics, Shin-Oyama City Hospital, Oyama, Japan
| | - Toshihiro Tajima
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
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Serra G, Antona V, Di Pace MR, Giuffrè M, Morgante G, Piro E, Pirrello R, Salerno S, Schierz IAM, Verde V, Corsello G. Intestinal malrotation in a female newborn affected by Osteopathia Striata with Cranial Sclerosis due to a de novo heterozygous nonsense mutation of the AMER1 gene. Ital J Pediatr 2022; 48:206. [PMID: 36581928 PMCID: PMC9801547 DOI: 10.1186/s13052-022-01403-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 12/22/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Osteopathia Striata with Cranial Sclerosis (OS-CS), also known as Horan-Beighton Syndrome, is a rare genetic disease; about 90 cases have been reported to date. It is associated with mutations (heterozygous for female subjects and hemizygous for males) of the AMER1 gene, located at Xq11.2, and shows an X-linked pattern of transmission. Typical clinical manifestations include macrocephaly, characteristic facial features (frontal bossing, epicanthal folds, hypertelorism, depressed nasal bridge, orofacial cleft, prominent jaw), hearing loss and developmental delay. Males usually present a more severe phenotype than females and rarely survive. Diagnostic suspicion is based on clinical signs, radiographic findings of cranial and long bones sclerosis and metaphyseal striations, subsequent genetic testing may confirm it. CASE PRESENTATION Hereby, we report on a female newborn with frontal and parietal bossing, narrow bitemporal diameter, dysplastic, low-set and posteriorly rotated ears, microretrognathia, cleft palate, and rhizomelic shortening of lower limbs. Postnatally, she manifested feeding intolerance with biliary vomiting and abdominal distension. Therefore, in the suspicion of bowel obstruction, she underwent surgery, which evidenced and corrected an intestinal malrotation. Limbs X-ray and skull computed tomography investigations did not show cranial sclerosis and/or metaphyseal striations. Array-CGH analysis revealed normal findings. Then, a target next generation sequencing (NGS) analysis, including the genes involved in skeletal dysplasias, was performed and revealed a de novo heterozygous nonsense mutation of the AMER1 gene. The patient was discharged at 2 months of age and included in a multidisciplinary follow-up. Aged 9 months, she now shows developmental and growth (except for relative macrocephaly) delay. The surgical correction of cleft palate has been planned. CONCLUSIONS Our report shows the uncommon association of intestinal malrotation in a female newborn with OS-CS. It highlights that neonatologists have to consider such a diagnosis, even in absence of cranial sclerosis and long bones striations, as these usually appear over time. Other syndromes with cranial malformations and skeletal dysplasia must be included in the differential diagnosis. The phenotypic spectrum is wide and variable in both genders. Due to variable X-inactivation, females may also show a severe and early-onset clinical picture. Multidisciplinary management and careful, early and long-term follow-up should be offered to these patients, in order to promptly identify any associated morbidities and prevent possible complications or adverse outcomes.
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Affiliation(s)
- Gregorio Serra
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Vincenzo Antona
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Maria Rita Di Pace
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Mario Giuffrè
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Giusy Morgante
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Ettore Piro
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Roberto Pirrello
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Sergio Salerno
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Ingrid Anne Mandy Schierz
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Vincenzo Verde
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Giovanni Corsello
- grid.10776.370000 0004 1762 5517Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
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Charoenngam N, Nasr A, Shirvani A, Holick MF. Hereditary Metabolic Bone Diseases: A Review of Pathogenesis, Diagnosis and Management. Genes (Basel) 2022; 13:genes13101880. [PMID: 36292765 PMCID: PMC9601711 DOI: 10.3390/genes13101880] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 10/03/2022] [Accepted: 10/13/2022] [Indexed: 11/20/2022] Open
Abstract
Hereditary metabolic bone diseases are characterized by genetic abnormalities in skeletal homeostasis and encompass one of the most diverse groups among rare diseases. In this review, we examine 25 selected hereditary metabolic bone diseases and recognized genetic variations of 78 genes that represent each of the three groups, including sclerosing bone disorders, disorders of defective bone mineralization and disorder of bone matrix and cartilage formation. We also review pathophysiology, manifestation and treatment for each disease. Advances in molecular genetics and basic sciences has led to accurate genetic diagnosis and novel effective therapeutic strategies for some diseases. For other diseases, the genetic basis and pathophysiology remain unclear. Further researches are therefore crucial to innovate ways to overcome diagnostic challenges and develop effective treatment options for these orphan diseases.
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Affiliation(s)
- Nipith Charoenngam
- Section Endocrinology, Diabetes, Nutrition and Weight Management, Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
- Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, MA 02138, USA
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Aryan Nasr
- Section Endocrinology, Diabetes, Nutrition and Weight Management, Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
| | - Arash Shirvani
- Section Endocrinology, Diabetes, Nutrition and Weight Management, Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
| | - Michael F. Holick
- Section Endocrinology, Diabetes, Nutrition and Weight Management, Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
- Correspondence: ; Tel.: +1-617-358-6139
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Wu J, Li X, Chen S. Special manifestations and treatment of rare cases of snoring with special facial features and hearing loss in children. J Int Med Res 2022; 50:3000605221108085. [PMID: 35796496 PMCID: PMC9274808 DOI: 10.1177/03000605221108085] [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: 11/24/2022] Open
Abstract
This current case report describes two rare cases of children with both hearing loss and snoring. Case 1, a 17-month-old male patient, and case 2, an 11-year-old male patient, both presented with nasal obstruction, snoring and hearing loss. Physical examinations showed obvious enlargement of the head circumference and special facial features. The two children underwent otolaryngology examinations, endoscopy, hearing tests, laboratory examinations for bone metabolism markers, cranial computed tomography, X-rays and genome-wide exon sequencing. The first case was diagnosed with craniometaphyseal dysplasia, which was relieved after giving a low-calcium diet. The second case was diagnosed with osteopathia striata with cranial sclerosis by gene sequencing. Snoring improved after medication and the speech and quality of life improved with a hearing aid. Paediatric otolaryngological physicians need to have a deeper understanding of congenital diseases involving the bones. Only by genetic testing to determine the pathogenesis can those children be given the correct treatment, which is of great importance for improving their prognosis.
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Affiliation(s)
- Jiali Wu
- Department of Paediatric Otolaryngology, Jiahui International Hospital, Shanghai, China
| | - Xiaoli Li
- Department of Radiation Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shumei Chen
- Department of Otolaryngology and Head and Neck Surgery, Shanghai Children's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Jeong C, Kim M, Yim J, Park IJ, Lee J, Lee J. Novel WTX nonsense mutation in a family diagnosed with osteopathia striata with cranial sclerosis: Case report. Medicine (Baltimore) 2021; 100:e27346. [PMID: 34622833 PMCID: PMC8500662 DOI: 10.1097/md.0000000000027346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/09/2021] [Indexed: 01/05/2023] Open
Abstract
ABSTRACT Rationale: Osteopathia striata with cranial sclerosis is characterized by linear striations in the metaphysis of the long bones and pelvis with cranial sclerosis. It is an X-linked dominant sclerosing bone dysplasia and affected males show fetal or neonatal lethality. Mutations in the gene encoding Wilms tumor on the X chromosome (WTX) was identified as the cause of X-linked osteopathia striata with cranial sclerosis. About 30 pathogenic mutations in WTX have been reported recently. We have identified a novel nonsense mutation in the family diagnosed as osteopathia striata with cranial sclerosis. PATIENT CONCERNS The proband came to our attention at age 9 for the evaluation of toe-out gait and planovalgus deformity. Clinically, the proband showed coarse facial features including frontal bossing, ocular hypertelorism, wide depressed nasal bridge, dental malocclusion, mild macrocephaly and low set ears. Radiologically, sclerotic linear striations were seen in the X-rays of the pelvis and the metaphyseal region of femur and tibia and the cranial sclerosis was observed. The proband's mother presented similar facial features and the X-rays of the pelvis, femur, and tibia revealed same sclerotic linear striations as the proband's. DIAGNOSES Osteopathia striata with cranial sclerosis. INTERVENTIONS A genetic analysis was conducted on genomic DNA isolated from peripheral blood leukocytes of the proband and the mother for confirming the clinical suspicion of osteopathia striata with cranial sclerosis. WTX on Xq11.2 gene was analyzed in direct sequencing for coding exons including intron-exon boundaries. OUTCOMES One novel nonsense mutation (c.1003C>T, p.Gln335∗) and known single nucleotide variant were observed in a heterozygous form. LESSONS We found a novel nonsense mutation in a family diagnosed as osteopathia striata with cranial sclerosis. The relationship between various clinical features and genetic mutations can be clarified by accumulation of genetic database.
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Affiliation(s)
- Changhoon Jeong
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Myungshin Kim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jisook Yim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Il-Jung Park
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jiwon Lee
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jaeyoung Lee
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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11
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Quarello P, Perotti D, Carli D, Giorgio E, Sirchia F, Brusco A, Ferrero GB, Mussa A, Spadea M, Ciceri S, Spreafico F, Fagioli F. Wilms tumour occurring in a patient with osteopathia striata with cranial sclerosis: A still unsolved biological question. Pediatr Blood Cancer 2021; 68:e29132. [PMID: 34028980 DOI: 10.1002/pbc.29132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Paola Quarello
- Paediatric Onco-Haematology, Stem Cell Transplantation and Cellular Therapy Division, Regina Margherita Children's Hospital, Turin, Italy.,Department of Public Health and Paediatric Sciences, University of Torino, Turin, Italy
| | - Daniela Perotti
- Molecular Bases of Genetic Risk and Genetic Testing Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Diana Carli
- Paediatric Onco-Haematology, Stem Cell Transplantation and Cellular Therapy Division, Regina Margherita Children's Hospital, Turin, Italy.,Department of Public Health and Paediatric Sciences, University of Torino, Turin, Italy
| | - Elisa Giorgio
- Department of Medical Sciences, University of Torino, Turin, Italy.,Department of Molecular Medicine, University of Pavia, Pavia, Italy.,IRCCS Mondino Foundation, Pavia, Italy
| | - Fabio Sirchia
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,IRCCS Mondino Foundation, Pavia, Italy.,IRCCS Materno Infantile 'Burlo Garofolo', Trieste, Italy
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, Turin, Italy.,Medical Genetics Unit, 'Città della Salute e della Scienza' Hospital, Turin, Italy
| | - Giovanni Battista Ferrero
- Department of Clinical and Biological Sciences, School of Medicine, University of Torino, Orbassano, Turin, Italy
| | - Alessandro Mussa
- Department of Public Health and Paediatric Sciences, University of Torino, Turin, Italy.,Pediatric Clinical Genetics Unit, Regina Margherita Children's Hospital, Turin, Italy
| | - Manuela Spadea
- Paediatric Onco-Haematology, Stem Cell Transplantation and Cellular Therapy Division, Regina Margherita Children's Hospital, Turin, Italy
| | - Sara Ciceri
- Molecular Bases of Genetic Risk and Genetic Testing Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Filippo Spreafico
- Pediatric Oncology Unit, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Franca Fagioli
- Paediatric Onco-Haematology, Stem Cell Transplantation and Cellular Therapy Division, Regina Margherita Children's Hospital, Turin, Italy.,Department of Public Health and Paediatric Sciences, University of Torino, Turin, Italy
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12
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Heikoop D, Brick L, Chitayat D, Colaiacovo S, Dupuis L, Faghfoury H, Goobie S, Mendoza R, Napier M, Nowaczyk M, Oh R, Silver J, Prasad C, Saleh M. The phenotypic spectrum of AMER1-related osteopathia striata with cranial sclerosis: The first Canadian cohort. Am J Med Genet A 2021; 185:3793-3803. [PMID: 34414661 DOI: 10.1002/ajmg.a.62452] [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] [Received: 05/28/2021] [Revised: 07/12/2021] [Accepted: 07/26/2021] [Indexed: 11/10/2022]
Abstract
Osteopathia striata with cranial sclerosis (OSCS; OMIM# 300373) is a rare X-linked disorder caused by mutations of the AMER1 gene. OSCS is traditionally considered a skeletal dysplasia, characterized by cranial sclerosis and longitudinal striations in the long bone metaphyses. However, OSCS affects many body systems and varies significantly in phenotypic severity between individuals. This case series focuses on the phenotypic presentation and development of individuals with OSCS. We provide an account of 12 patients with OSCS, ranging from 5 months to 38 years of age. These patients were diagnosed with OSCS after genetic testing confirmed pathogenic mutations in AMER1. Patient consent was obtained for photos and participation. Data were collected regarding perinatal history, dysmorphic features, and review of systems. This case series documents common facial dysmorphology, as well as rare extraskeletal features of OSCS, including two patients with intestinal malrotation and two patients with pyloric stenosis. We share four apparently nonmosaic males with OSCS (one de novo and three maternal variants). We also provide a clinical update on a patient who was previously published by Chénier et al. (2012). American Journal of Medical Genetics Part A, 158, 2946-2952. More research is needed to investigate the links between genotype and phenotype and assess the long-term comorbidities and overall quality of life of individuals with OSCS.
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Affiliation(s)
- David Heikoop
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, London Health Sciences, Schulich School of Medicine, Western University, London, Ontario, Canada
| | - Lauren Brick
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, McMaster Children's Hospital, McMaster University, Hamilton, Ontario, Canada
| | - David Chitayat
- Division of Clinical and Metabolic Genetics, Mount Sinai Hospital and University Health Network, University of Toronto, Toronto, Ontario, Canada.,The Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Samantha Colaiacovo
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, London Health Sciences, Schulich School of Medicine, Western University, London, Ontario, Canada
| | - Lucie Dupuis
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Hanna Faghfoury
- Division of Clinical and Metabolic Genetics, Mount Sinai Hospital and University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Sharan Goobie
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, IWK Hospital, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Roberto Mendoza
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Melanie Napier
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, London Health Sciences, Schulich School of Medicine, Western University, London, Ontario, Canada
| | - Margaret Nowaczyk
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, McMaster Children's Hospital, McMaster University, Hamilton, Ontario, Canada
| | - Rachel Oh
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Josh Silver
- Division of Clinical and Metabolic Genetics, Mount Sinai Hospital and University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Chitra Prasad
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, London Health Sciences, Schulich School of Medicine, Western University, London, Ontario, Canada
| | - Maha Saleh
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, London Health Sciences, Schulich School of Medicine, Western University, London, Ontario, Canada
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13
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Hol JA, Jewell R, Chowdhury T, Duncan C, Nakata K, Oue T, Gauthier-Villars M, Littooij AS, Kaneko Y, Graf N, Bourdeaut F, van den Heuvel-Eibrink MM, Pritchard-Jones K, Maher ER, Kratz CP, Jongmans MCJ. Wilms tumour surveillance in at-risk children: Literature review and recommendations from the SIOP-Europe Host Genome Working Group and SIOP Renal Tumour Study Group. Eur J Cancer 2021; 153:51-63. [PMID: 34134020 DOI: 10.1016/j.ejca.2021.05.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/02/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022]
Abstract
Since previous consensus-based Wilms tumour (WT) surveillance guidelines were published, novel genes and syndromes associated with WT risk have been identified, and diagnostic molecular tests for previously known syndromes have improved. In view of this, the International Society of Pediatric Oncology (SIOP)-Europe Host Genome Working Group and SIOP Renal Tumour Study Group hereby present updated WT surveillance guidelines after an extensive literature review and international consensus meetings. These guidelines are for use by clinical geneticists, pediatricians, pediatric oncologists and radiologists involved in the care of children at risk of WT. Additionally, we emphasise the need to register all patients with a cancer predisposition syndrome in national or international databases, to enable the development of better tumour risk estimates and tumour surveillance programs in the future.
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Affiliation(s)
- Janna A Hol
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
| | - Rosalyn Jewell
- Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Tanzina Chowdhury
- Great Ormond Street Hospital for Children, London, United Kingdom; University College London Great Ormond Street Institute of Child Health, University College London, United Kingdom
| | - Catriona Duncan
- Great Ormond Street Hospital for Children, London, United Kingdom
| | - Kayo Nakata
- Cancer Control Center, Osaka International Cancer Institute, Osaka, Japan
| | - Takaharu Oue
- Department of Pediatric Surgery, Hyōgo College of Medicine, Nishinomiya, Hyōgo, Japan
| | | | - Annemieke S Littooij
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands; Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Yasuhiko Kaneko
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Norbert Graf
- Department of Pediatric Oncology & Hematology, Saarland University, Homburg, Germany
| | - Franck Bourdeaut
- SIREDO Pediatric Oncology Center, Institut Curie Hospital, Paris, France
| | | | - Kathy Pritchard-Jones
- Great Ormond Street Hospital for Children, London, United Kingdom; University College London Great Ormond Street Institute of Child Health, University College London, United Kingdom
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom
| | - Christian P Kratz
- Department of Pediatric Hematology and Oncology & Rare Disease Program, Hannover Medical School, Center for Pediatrics and Adolescent Medicine, Hannover, Germany
| | - Marjolijn C J Jongmans
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands; Department of Genetics, University Medical Center Utrecht / Wilhelmina Children's Hospital, Utrecht, the Netherlands.
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14
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郭 子, 梁 志, 周 仪, 张 娜, 黄 捷. [Genetic study of cardiovascular disease subtypes defined by International Classification of Diseases]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2021; 53:453-459. [PMID: 34145844 PMCID: PMC8220055 DOI: 10.19723/j.issn.1671-167x.2021.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To study the molecular connection among cardiovascular diseases (CVD) subtypes defined by the International Classification of Diseases (ICD) version 10 (ICD-10). METHODS Both phenotypic data and genotypic data used in this study were obtained from the UK Biobank. A total of 380 083 participants aged between 40 and 69 years were included. Those without any cardiovascular disease (either no ICD-10 code at all or no ICD-10 code containing letter I) were assigned to the control group. The five CVD subtypes were: ischaemic heart diseases (IHD), pulmonary heart disease and diseases of pulmonary circulation (PHD), cerebrovascular diseases (CRB), diseases of arteries, arterioles and capillaries (AAC), diseases of veins, lymphatic vessels and lymph nodes, and diseases not elsewhere classified (VLL). We first performed a genome-wide association study (GWAS) for each of the five subtypes. We summarized novel loci using genome-wide significance threshold P=5×10-8. Next, we used linkage disequilibrium score regression (LDSC) method to assess genetic correlation among the five subtypes. Lastly, we applied mendelian randomization (MR) approach to assess the causal relationship among the subtypes. The particular software that we used was generalised summary-data-based mendelian randomisation (GSMR). RESULTS Through GWAS, we identified hundreds of genome-wide significant SNPs: 672 for IHD, 241 for PHD, 31 for CRB, 48 for AAC, and 193 for VLL. By comparing with published literature, we found 28 novel loci, for PHD (n=14), CRB (n =7) and AAC (n =7). Eight of these 28 loci were rare, where the lead SNP had minor allele frequency (MAF) less than 1%. LDSC analyses indicated IHD had significant genetic correlation with VLL (P=2.52×10-7), PHD (P=3.77×10-3) and AAC (P=4.90×10-3), respectively. Bidrectional GSMR analyses showed that IHD had a positive causal relationship with VLL (P=7.40×10-5) and AAC (P=1.50×10-3), while reverse causality was not supported. CONCLUSION This study adopted an innovative approach to study the molecular connection among CVD subtypes that are defined by ICD. We identified potentially positive genetic correlation and causal effects among some of these subtypes. Research along this line will provide scientific insights and serve as a guidance for future ICD standards.
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Affiliation(s)
- 子宁 郭
- />北京大学公共卫生学院全球卫生学系,北京 100191Department of Global Health, School of Public Health, Peking University 100191, China
| | - 志生 梁
- />北京大学公共卫生学院全球卫生学系,北京 100191Department of Global Health, School of Public Health, Peking University 100191, China
| | - 仪 周
- />北京大学公共卫生学院全球卫生学系,北京 100191Department of Global Health, School of Public Health, Peking University 100191, China
| | - 娜 张
- />北京大学公共卫生学院全球卫生学系,北京 100191Department of Global Health, School of Public Health, Peking University 100191, China
| | - 捷 黄
- />北京大学公共卫生学院全球卫生学系,北京 100191Department of Global Health, School of Public Health, Peking University 100191, China
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15
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Signaling Pathways in Bone Development and Their Related Skeletal Dysplasia. Int J Mol Sci 2021; 22:ijms22094321. [PMID: 33919228 PMCID: PMC8122623 DOI: 10.3390/ijms22094321] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
Bone development is a tightly regulated process. Several integrated signaling pathways including HH, PTHrP, WNT, NOTCH, TGF-β, BMP, FGF and the transcription factors SOX9, RUNX2 and OSX are essential for proper skeletal development. Misregulation of these signaling pathways can cause a large spectrum of congenital conditions categorized as skeletal dysplasia. Since the signaling pathways involved in skeletal dysplasia interact at multiple levels and have a different role depending on the time of action (early or late in chondrogenesis and osteoblastogenesis), it is still difficult to precisely explain the physiopathological mechanisms of skeletal disorders. However, in recent years, significant progress has been made in elucidating the mechanisms of these signaling pathways and genotype–phenotype correlations have helped to elucidate their role in skeletogenesis. Here, we review the principal signaling pathways involved in bone development and their associated skeletal dysplasia.
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16
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Major skull manifestations of skeletal dysplasias - pictorial essay. Pediatr Radiol 2020; 50:1658-1668. [PMID: 33135136 DOI: 10.1007/s00247-019-04473-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/11/2019] [Accepted: 06/28/2019] [Indexed: 12/24/2022]
Abstract
Skeletal dysplasias are a large group of rare conditions with widely heterogeneous manifestations and a reputation for being diagnostically difficult. Involvement of the brain and craniovertebral junction are features familiar to the paediatric neuroradiologist. Involvement of the skull itself represents an area of overlap between the domains of the neuroradiologist and the skeletal dysplasia radiologist. In this pictorial essay, we review the principal skull manifestations of skeletal dysplasias as they present to the neuroradiologist.
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17
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Wilms tumor in patients with osteopathia striata with cranial sclerosis. Eur J Hum Genet 2020; 29:396-401. [PMID: 32879452 DOI: 10.1038/s41431-020-00718-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/12/2020] [Accepted: 08/21/2020] [Indexed: 11/08/2022] Open
Abstract
Germline pathogenic variants in AMER1 cause osteopathia striata with cranial sclerosis (OSCS: OMIM 300373), an X-linked sclerosing bone disorder. Female heterozygotes exhibit metaphyseal striations in long bones, macrocephaly, cleft palate, and, occasionally, learning disability. Male hemizygotes typically manifest the condition as fetal or neonatal death. Somatically acquired variants in AMER1 are found in neoplastic tissue in 15-30% of patients with Wilms tumor; however, to date, only one individual with OSCS has been reported with a Wilms tumor. Here we present four cases of Wilms tumor in unrelated individuals with OSCS, including the single previously published case. We also report the first case of bilateral Wilms tumor in a patient with OSCS. Tumor tissue analysis showed no clear pattern of histological subtypes. In Beckwith-Wiedemann syndrome, which has a known predisposition to Wilms tumor development, clinical protocols have been developed for tumor surveillance. In the absence of further evidence, we propose a similar protocol for patients with OSCS to be instituted as an initial precautionary approach to tumor surveillance. Further evidence is needed to refine this protocol and to evaluate the possibility of development of other neoplasms later in life, in patients with OSCS.
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18
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García-Aznar JM, Ramírez N, De Uña D, Santiago E, Monserrat L. Whole Exome Sequencing Provides the Correct Diagnosis in a Case of Osteopathia Striata with Cranial Sclerosis: Case Report of a Novel Frameshift Mutation in AMER1. J Pediatr Genet 2020; 10:139-146. [PMID: 33996185 DOI: 10.1055/s-0040-1710058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/17/2020] [Indexed: 10/24/2022]
Abstract
The diagnosis of rare diseases with multisystem manifestations can constitute a difficult process that delays the determination of the underlying cause. Whole exome sequencing (WES) provides a suitable option to examine multiple target genes associated with several disorders that display common features. In this study, we report the case of a female patient suspected of having Sotos syndrome. Screening for the initially selected genes, considering Sotos syndrome and Sotos-like disorders, did not identify any pathogenic variants that could explain the phenotype. The extended analysis, which considered all genes in the exome associated with features consistent with those shown by the studied patient, revealed a novel frameshift variant in the AMER1 gene, responsible for osteopathia striata with cranial sclerosis. WES analysis and an updated revision of previously reported disease-causing mutations, proved useful to reach an accurate diagnosis and guide further examination to identify critical abnormalities.
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Affiliation(s)
| | - Noelia Ramírez
- Pediatric Division, Hospital Virgen de Altagracia, Manzanares, Spain
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19
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Huybrechts Y, Mortier G, Boudin E, Van Hul W. WNT Signaling and Bone: Lessons From Skeletal Dysplasias and Disorders. Front Endocrinol (Lausanne) 2020; 11:165. [PMID: 32328030 PMCID: PMC7160326 DOI: 10.3389/fendo.2020.00165] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/09/2020] [Indexed: 12/15/2022] Open
Abstract
Skeletal dysplasias are a diverse group of heritable diseases affecting bone and cartilage growth. Throughout the years, the molecular defect underlying many of the diseases has been identified. These identifications led to novel insights in the mechanisms regulating bone and cartilage growth and homeostasis. One of the pathways that is clearly important during skeletal development and bone homeostasis is the Wingless and int-1 (WNT) signaling pathway. So far, three different WNT signaling pathways have been described, which are all activated by binding of the WNT ligands to the Frizzled (FZD) receptors. In this review, we discuss the skeletal disorders that are included in the latest nosology of skeletal disorders and that are caused by genetic defects involving the WNT signaling pathway. The number of skeletal disorders caused by defects in WNT signaling genes and the clinical phenotype associated with these disorders illustrate the importance of the WNT signaling pathway during skeletal development as well as later on in life to maintain bone mass. The knowledge gained through the identification of the genes underlying these monogenic conditions is used for the identification of novel therapeutic targets. For example, the genes underlying disorders with altered bone mass are all involved in the canonical WNT signaling pathway. Consequently, targeting this pathway is one of the major strategies to increase bone mass in patients with osteoporosis. In addition to increasing the insights in the pathways regulating skeletal development and bone homeostasis, knowledge of rare skeletal dysplasias can also be used to predict possible adverse effects of these novel drug targets. Therefore, this review gives an overview of the skeletal and extra-skeletal phenotype of the different skeletal disorders linked to the WNT signaling pathway.
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20
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Abstract
The group of sclerosing bone dysplasia's is a clinically and genetically heterogeneous group of rare bone disorders which, according to the latest Nosology and classification of genetic skeletal disorders (2015), can be subdivided in three subgroups; the neonatal osteosclerotic dysplasias, the osteopetroses and related disorders and the other sclerosing bone disorders. Here, we give an overview of the most important radiographic and clinical symptoms, the underlying genetic defect and potential treatment options of the different sclerosing dysplasias included in these subgroups.
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Affiliation(s)
- Eveline Boudin
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Wim Van Hul
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium.
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21
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Abstract
PURPOSE OF REVIEW The group of sclerosing bone disorders encompasses a variety of disorders all marked by increased bone mass. In this review, we give an overview of the genetic causes of this heterogeneous group of disorders and briefly touch upon the value of these findings for the development of novel therapeutic agents. RECENT FINDINGS Advances in the next-generation sequencing technologies are accelerating the molecular dissection of the pathogenic mechanisms underlying skeletal dysplasias. Throughout the years, the genetic cause of these disorders has been extensively studied which resulted in the identification of a variety of disease-causing genes and pathways that are involved in bone formation by osteoblasts, bone resorption by osteoclasts, or both processes. Due to this rapidly increasing knowledge, the insights into the regulatory mechanisms of bone metabolism are continuously improving resulting in the identification of novel therapeutic targets for disorders with reduced bone mass and increased bone fragility.
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Affiliation(s)
- Raphaël De Ridder
- Centre of Medical Genetics, University of Antwerp & University Hospital Antwerp, Antwerp, Belgium
| | - Eveline Boudin
- Centre of Medical Genetics, University of Antwerp & University Hospital Antwerp, Antwerp, Belgium
| | - Geert Mortier
- Centre of Medical Genetics, University of Antwerp & University Hospital Antwerp, Antwerp, Belgium
| | - Wim Van Hul
- Centre of Medical Genetics, University of Antwerp & University Hospital Antwerp, Antwerp, Belgium.
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22
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Comai G, Boutet A, Tanneberger K, Massa F, Rocha AS, Charlet A, Panzolini C, Jian Motamedi F, Brommage R, Hans W, Funck-Brentano T, Hrabe de Angelis M, Hartmann C, Cohen-Solal M, Behrens J, Schedl A. Genetic and Molecular Insights Into Genotype-Phenotype Relationships in Osteopathia Striata With Cranial Sclerosis (OSCS) Through the Analysis of Novel Mouse Wtx Mutant Alleles. J Bone Miner Res 2018; 33:875-887. [PMID: 29329488 DOI: 10.1002/jbmr.3387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 12/19/2017] [Accepted: 01/03/2018] [Indexed: 12/17/2022]
Abstract
The X-linked WTX/AMER1 protein constitutes an important component of the β-catenin destruction complex that can both enhance and suppress canonical β-catenin signaling. Somatic mutations in WTX/AMER1 have been found in a proportion of the pediatric kidney cancer Wilms' tumor. By contrast, germline mutations cause the severe sclerosing bone dysplasia osteopathia striata congenita with cranial sclerosis (OSCS), a condition usually associated with fetal or perinatal lethality in male patients. Here we address the developmental and molecular function of WTX by generating two novel mouse alleles. We show that in addition to the previously reported skeletal abnormalities, loss of Wtx causes severe midline fusion defects including cleft palate and ectopic synostosis at the base of the skull. By contrast, deletion of the C-terminal part of the protein results in only mild developmental abnormalities permitting survival beyond birth. Adult analysis, however, revealed skeletal defects including changed skull morphology and an increased whole-body bone density, resembling a subgroup of male patients carrying a milder, survivable phenotype. Molecular analysis in vitro showed that while β-catenin fails to co-immunoprecipitate with the truncated protein, partial recruitment appears to be achieved in an indirect manner using AXIN/AXIN2 as a molecular bridge. Taken together our analysis provides a novel model for WTX-caused bone diseases and explains on the molecular level how truncation mutations in this gene may retain some of WTX-protein functions. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Glenda Comai
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France.,Current Address: Dept. of Developmental & Stem Cell Biology, Pasteur Institute, CNRS UMR3738, Paris, France
| | - Agnès Boutet
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France.,Current Address: CNRS, Sorbonne Université, UPMC Univ Paris 6, UMR8227, Translation, Cell Cycle and Development Group, Station Biologique, F-29688 Roscoff, France
| | - Kristina Tanneberger
- Friedrich-Alexander Universität Erlangen-Nuremberg, Nikolaus Fiebiger Zentrum, Erlangen, Germany
| | - Filippo Massa
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
| | - Ana-Sofia Rocha
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
| | - Aurelie Charlet
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
| | - Clara Panzolini
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
| | - Fariba Jian Motamedi
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
| | - Robert Brommage
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Wolfgang Hans
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Thomas Funck-Brentano
- INSERM UMR-1132, Biologie de l'os et du cartilage (BIOSCAR), Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany.,Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, Freising, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Christine Hartmann
- Institute of Musculoskeletal Medicine, University Hospital Münster, Westfälische Wilhelms-Universität (WWU), Münster, Germany
| | - Martine Cohen-Solal
- INSERM UMR-1132, Biologie de l'os et du cartilage (BIOSCAR), Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Jürgen Behrens
- Friedrich-Alexander Universität Erlangen-Nuremberg, Nikolaus Fiebiger Zentrum, Erlangen, Germany
| | - Andreas Schedl
- Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose (iBV), Nice, France
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23
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Costantini A, Kekäläinen P, Mäkitie RE, Mäkitie O. High bone mass due to novel LRP5 and AMER1 mutations. Eur J Med Genet 2017; 60:675-679. [DOI: 10.1016/j.ejmg.2017.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/08/2017] [Accepted: 09/07/2017] [Indexed: 10/18/2022]
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24
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Sperotto F, Bisogno G, Opocher E, Rossi S, Rigon C, Trevisson E, Mercolini F. Osteopathia striata with cranial sclerosis and Wilms tumor: Coincidence or consequence? Clin Genet 2017; 92:674-675. [DOI: 10.1111/cge.13082] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/19/2017] [Accepted: 06/21/2017] [Indexed: 11/30/2022]
Affiliation(s)
- F. Sperotto
- Pediatric Hematology and Oncology Unit, Department of Woman's and Child's Health; Padova University; Padova Italy
| | - G. Bisogno
- Pediatric Hematology and Oncology Unit, Department of Woman's and Child's Health; Padova University; Padova Italy
| | - E. Opocher
- Pediatric Hematology and Oncology Unit, Department of Woman's and Child's Health; Padova University; Padova Italy
| | - S. Rossi
- Institute of Pediatric Research Città della Speranza, Clinical Genetics and Epidemiology Laboratory; Padova University; Padova Italy
- Clinical Genetics Unit, Department of Woman's and Child's Health; University of Padova; Padova Italy
| | - C. Rigon
- Institute of Pediatric Research Città della Speranza, Clinical Genetics and Epidemiology Laboratory; Padova University; Padova Italy
- Clinical Genetics Unit, Department of Woman's and Child's Health; University of Padova; Padova Italy
| | - E. Trevisson
- Institute of Pediatric Research Città della Speranza, Clinical Genetics and Epidemiology Laboratory; Padova University; Padova Italy
- Clinical Genetics Unit, Department of Woman's and Child's Health; University of Padova; Padova Italy
| | - F. Mercolini
- Pediatric Hematology and Oncology Unit, Department of Woman's and Child's Health; Padova University; Padova Italy
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25
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Boudin E, Van Hul W. MECHANISMS IN ENDOCRINOLOGY: Genetics of human bone formation. Eur J Endocrinol 2017; 177:R69-R83. [PMID: 28381451 DOI: 10.1530/eje-16-0990] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/15/2017] [Accepted: 04/05/2017] [Indexed: 12/21/2022]
Abstract
Throughout life, bone is continuously remodelled to be able to fulfil its multiple functions. The importance of strictly regulating the bone remodelling process, which is defined by the sequential actions of osteoclasts and osteoblasts, is shown by a variety of disorders with abnormalities in bone mass and strength. The best known and most common example of such a disorder is osteoporosis, which is marked by a decreased bone mass and strength that consequently results in an increased fracture risk. As osteoporosis is a serious health problem, a large number of studies focus on elucidating the aetiology of the disease as well as on the identification of novel therapeutic targets for the treatment of osteoporotic patients. These studies have demonstrated that a large amount of variation in bone mass and strength is often influenced by genetic variation in genes encoding important regulators of bone homeostasis. Throughout the years, studies into the genetic causes of osteoporosis as well as several rare monogenic disorders with abnormal high or low bone mass and strength have largely increased the knowledge on regulatory pathways important for bone resorption and formation. This review gives an overview of genes and pathways that are important for the regulation of bone formation and that are identified through their involvement in monogenic and complex disorders with abnormal bone mass. Furthermore, novel bone-forming strategies for the treatment of osteoporosis that resulted from these discoveries, such as antibodies against sclerostin, are discussed as well.
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Affiliation(s)
- Eveline Boudin
- Center of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - Wim Van Hul
- Center of Medical Genetics, University of Antwerp, Antwerp, Belgium
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26
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A Case Study of a Preadolescent With Osteopathia Striata With Cranial Sclerosis. J Pediatr Health Care 2017; 31:511-516. [PMID: 28390856 DOI: 10.1016/j.pedhc.2017.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/03/2017] [Accepted: 01/09/2017] [Indexed: 11/23/2022]
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27
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Hague J, Delon I, Brugger K, Martin H, Sparnon L, Simonic I, Abbs S, Park SM. Male child with somatic mosaic Osteopathia Striata with Cranial Sclerosis caused by a novel pathogenic AMER1 frameshift mutation. Am J Med Genet A 2017; 173:1931-1935. [PMID: 28497491 DOI: 10.1002/ajmg.a.38261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/06/2017] [Accepted: 03/27/2017] [Indexed: 11/08/2022]
Abstract
Osteopathia striata with cranial sclerosis (OSCS; OMIM #300373) is a rare X-linked dominant condition caused by mutations in the AMER1 gene (also known as WTX or FAM123B). It is a condition which usually affects females in whom the clinical phenotype can be extremely variable. Conversely affected males typically die in utero or during the neonatal period [Perdu et al. (); Clinical Genetics 80: 383-388; Vasiljevic et al. (); Prenatal Diagnosis 35: 302-304]. There have been a small number of reported cases of surviving males, including three patients who are somatic mosaic for the condition [Chénier, Noor, Dupuis, Stavropoulos, & Mendoza-Londono, (); American Journal of Medical Genetics Part A 158A: 2946-2952; Holman et al. (); American Journal of Medical Genetics Part A 155A: 2397-2408; Joseph, Shoji, & Econs, (); The Journal of Clinical Endocrinology and Metabolism 95: 1506-1507]. We report a case of a male child who has proven somatic mosaicism for OSCS associated with a novel pathogenic frameshift mutation, c.607_611delAGGCC (p.Arg203 fs) in AMER1. We describe the multisystemic clinical features which include macrocephaly with ventriculomegaly and requirement for ventriculoperitoneal shunt, cleft palate, and respiratory difficulties after birth requiring tracheostomy insertion, persistent patent ductus arteriosus, failure to thrive and gastrostomy insertion, growth retardation, ophthalmoplegia, kidney malformation, cryptorchidism, and developmental delay. The use of new technologies with next generation sequencing (NGS) may improve the detection rate of mosaicism in rare conditions.
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Affiliation(s)
- Jennifer Hague
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Isabelle Delon
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Kim Brugger
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Howard Martin
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Leanne Sparnon
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Ingrid Simonic
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Stephen Abbs
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Soo-Mi Park
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
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28
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Fradin M, Collet C, Ract I, Odent S, Guggenbuhl P. First case of osteopathia striata with cranial sclerosis in an adult male with Klinefelter syndrome. Joint Bone Spine 2017; 84:87-90. [DOI: 10.1016/j.jbspin.2016.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/21/2016] [Indexed: 01/01/2023]
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29
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Germline mosaicism in osteopathia striata with cranial sclerosis--recurrence in siblings. Clin Dysmorphol 2016; 25:45-9. [PMID: 26886897 DOI: 10.1097/mcd.0000000000000116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report recurrence of osteopathia striata with cranial sclerosis (OSCS) in two full siblings conceived by unaffected parents. Molecular confirmation of OSCS in both siblings was achieved by identification of a novel heterozygous mutation in the WTX gene. Neither parent had clinical features of OSCS nor was the pathogenic mutation demonstrable in DNA extracted from both peripheral blood leucocytes and buccal cells. This case demonstrates germline mosaicism in OSCS and represents the third report of mosaicism affecting the germline in families with OSCS. Previous reports were of parental gonadosomal mosaicism, with one showing recurrence in multiple children. Our observation adds to a body of evidence that suggests that germline mosaicism in OSCS may occur more frequently than believed previously and may have implications for counselling families with OSCS.
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30
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Abstract
Inhibitors of Wnt signaling have been shown to be involved in prostate cancer (PC) metastasis; however the role of Sclerostin (Sost) has not yet been explored. Here we show that elevated Wnt signaling derived from Sost deficient osteoblasts promotes PC invasion, while rhSOST has an inhibitory effect. In contrast, rhDKK1 promotes PC elongation and filopodia formation, morphological changes characteristic of an invasive phenotype. Furthermore, rhDKK1 was found to activate canonical Wnt signaling in PC3 cells, suggesting that SOST and DKK1 have opposing roles on Wnt signaling in this context. Gene expression analysis of PC3 cells co-cultured with OBs exhibiting varying amounts of Wnt signaling identified CRIM1 as one of the transcripts upregulated under highly invasive conditions. We found CRIM1 overexpression to also promote cell-invasion. These findings suggest that bone-derived Wnt signaling may enhance PC tropism by promoting CRIM1 expression and facilitating cancer cell invasion and adhesion to bone. We concluded that SOST and DKK1 have opposing effects on PC3 cell invasion and that bone-derived Wnt signaling positively contributes to the invasive phenotypes of PC3 cells by activating CRIM1 expression and facilitating PC-OB physical interaction. As such, we investigated the effects of high concentrations of SOST in vivo. We found that PC3-cells overexpressing SOST injected via the tail vein in NSG mice did not readily metastasize, and those injected intrafemorally had significantly reduced osteolysis, suggesting that targeting the molecular bone environment may influence bone metastatic prognosis in clinical settings.
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31
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Vasiljevic A, Azzi C, Lacalm A, Combourieu D, Collardeau-Frachon S, Dijoud F, Massardier J, Van Hul W, Fromageoux C, Guibaud L, Gaucherand P, Cordier MP, Massoud M. Prenatal diagnosis of osteopathia striata with cranial sclerosis. Prenat Diagn 2014; 35:302-4. [PMID: 25284440 DOI: 10.1002/pd.4513] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/19/2014] [Accepted: 09/29/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Alexandre Vasiljevic
- Laboratoire de Pathologie, Hôpital Femme Mère Enfant, Université Claude Bernard Lyon I, Lyon, France
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32
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Park HC, Kim HG, Kim YH, Kim JH, Kim MY, Kim KW. Osteomyelitis in an Osteopathia Striata with Cranial Sclerosis Patient. Maxillofac Plast Reconstr Surg 2014; 36:285-91. [PMID: 27489848 PMCID: PMC4283534 DOI: 10.14402/jkamprs.2014.36.6.285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 10/07/2014] [Accepted: 10/20/2014] [Indexed: 11/21/2022] Open
Abstract
Osteopathia striata with cranial sclerosis (OS-CS) is characterized by linear bone dysplasia at the long bone radiographically and sclerotic change at the cranium. The purpose of this case report is to study the symptoms and treatments of osteomyelitis in a patient with OS-CS. A 41-year-old patient had pus discharge from a fistula at the mental region and increase in radiolucencies with sequestra in panoramic radiograph images. Computed tomography (CT) as well as radiograph images for the whole skeleton were taken. The patient was diagnosed with OS-CS. Sequestrectomy and fistulectomy were performed. The patient recovered and no relapse occurred within six months after surgery. For diagnosis of OS-CS, CT and additional radiograph images for the whole skeleton are required. Because of the increased bone density, this patient is prone to relapse after sequestrectomy. Therefore, the surgeon must minimize trauma with the least incision and exfoliation, and preoperative antibiotics.
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Affiliation(s)
- Heung-Chul Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
| | - Hang-Gul Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
| | - Yong-Hwan Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
| | - Joo-Hwan Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
| | - Moon-Young Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
| | - Kyung-Wook Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University
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33
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Cattaneo E, Ciceri S, Liberati N, Radice P, Tarani L, Selicorni A, Perotti D. Osteopathia striata with cranial sclerosis, Wilms’ tumor and the WTX gene. World J Med Genet 2014; 4:34-38. [DOI: 10.5496/wjmg.v4.i2.34] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/10/2014] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Osteopathia striata with cranial sclerosis (OSCS, OMIM#300373) is an X-linked dominant sclerosing bone dysplasia that shows a distinct phenotype in females and males. In 2009, Zandra Jenkins et al found that germline mutations in the FAM123B/WTX/AMER1 gene, mapped to chromosome Xq11.2, cause both the familial and sporadic forms of OSCS. Intriguingly, the WTX gene was already known as a putative tumor suppressor gene, since in 2007 Rivera et al had reported inactivating WTX mutations in Wilms’ tumor (WT), the most frequent renal tumor of childhood. Here we review the heterogeneous clinical presentation of OSCS patients and the involvement of WTX anomalies in OSCS and in WT.
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34
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Waterval JJ, Borra VM, Van Hul W, Stokroos RJ, Manni JJ. Sclerosing bone dysplasias with involvement of the craniofacial skeleton. Bone 2014; 60:48-67. [PMID: 24325978 DOI: 10.1016/j.bone.2013.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 11/25/2013] [Accepted: 12/02/2013] [Indexed: 01/13/2023]
Abstract
In this review we provide a complete overview of the existing sclerosing bone dysplasias with craniofacial involvement. Clinical presentation, disease course, the craniofacial symptoms, genetic transmission pattern and pathophysiology are discussed. There is an emphasis on radiologic features with a large collection of CT and MRI images. In previous reviews the craniofacial area of the sclerosing bone dysplasias was underexposed. However, craniofacial symptoms are often the first symptoms to address a physician. The embryology of the skull and skull base is explained and illustrated for a better understanding of the affected areas.
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Affiliation(s)
- J J Waterval
- Department of Otorhinolaryngology-Head & Neck Surgery, Maastricht University Medical Center, P.O. 5800, 6202AZ Maastricht, The Netherlands.
| | - V M Borra
- Department of Medical Genetics, University of Antwerp, Prins Boudewijnlaan 43, B-2650 Edegem, Belgium.
| | - W Van Hul
- Department of Medical Genetics, University of Antwerp, Prins Boudewijnlaan 43, B-2650 Edegem, Belgium.
| | - R J Stokroos
- Department of Otorhinolaryngology-Head & Neck Surgery, Maastricht University Medical Center, P.O. 5800, 6202AZ Maastricht, The Netherlands.
| | - J J Manni
- Department of Otorhinolaryngology-Head & Neck Surgery, Maastricht University Medical Center, P.O. 5800, 6202AZ Maastricht, The Netherlands.
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35
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Fujita A, Ochi N, Fujimaki H, Muramatsu H, Takahashi Y, Natsume J, Kojima S, Nakashima M, Tsurusaki Y, Saitsu H, Matsumoto N, Miyake N. A novelWTXmutation in a female patient with osteopathia striata with cranial sclerosis and hepatoblastoma. Am J Med Genet A 2014; 164A:998-1002. [DOI: 10.1002/ajmg.a.36369] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Accepted: 11/01/2013] [Indexed: 01/06/2023]
Affiliation(s)
- Atsushi Fujita
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - Nobuhiko Ochi
- Department of Pediatrics; Aichi Prefectural Rehabilitation Center for Children with Disabilities Daini Aoitori Gakuen; Okazaki Japan
| | - Hidehiko Fujimaki
- Division of Neonatology, Center for Maternal-Neonatal Care; Nagoya University Hospital; Nagoya Japan
| | - Hideki Muramatsu
- Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Jun Natsume
- Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Seiji Kojima
- Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Mitsuko Nakashima
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - Yoshinori Tsurusaki
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - Hirotomo Saitsu
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - Naomichi Matsumoto
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - Noriko Miyake
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
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36
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Akhavanfard S, Vargas SO, Han M, Nitta M, Chang CB, Le LP, Fazlollahi L, Nguyen Q, Ma Y, Cosper A, Dias-Santagata D, Han JY, Bergethon K, Borger DR, Ellisen LW, Pomeroy SL, Haber DA, Iafrate AJ, Rivera MN. Inactivation of the tumor suppressorWTXin a subset of pediatric tumors. Genes Chromosomes Cancer 2013; 53:67-77. [DOI: 10.1002/gcc.22118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 12/22/2022] Open
Affiliation(s)
- Sara Akhavanfard
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Cancer Center, Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Sara O. Vargas
- Harvard Medical School; Boston MA
- Department of Pathology; Children's Hospital; Boston MA
| | - Moonjoo Han
- Department of Pathology; Massachusetts General Hospital; Boston MA
| | - Mai Nitta
- Department of Pathology; Massachusetts General Hospital; Boston MA
| | - Clarice B. Chang
- Department of Pathology; Massachusetts General Hospital; Boston MA
| | - Long P. Le
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Ladan Fazlollahi
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | | | | | - Arjola Cosper
- Department of Pathology; Massachusetts General Hospital; Boston MA
| | - Dora Dias-Santagata
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Jae Y. Han
- Department of Pathology; Massachusetts General Hospital; Boston MA
| | | | - Darrell R. Borger
- Cancer Center, Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Leif W. Ellisen
- Cancer Center, Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Scott L. Pomeroy
- Harvard Medical School; Boston MA
- Department of Neurology; Children's Hospital; Boston MA
| | - Daniel A. Haber
- Cancer Center, Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - A. John Iafrate
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
| | - Miguel N. Rivera
- Department of Pathology; Massachusetts General Hospital; Boston MA
- Cancer Center, Massachusetts General Hospital; Boston MA
- Harvard Medical School; Boston MA
- Broad Institute of Harvard and MIT; Cambridge MA
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37
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Bollerslev J, Henriksen K, Nielsen MF, Brixen K, Van Hul W. Autosomal dominant osteopetrosis revisited: lessons from recent studies. Eur J Endocrinol 2013; 169:R39-57. [PMID: 23744590 DOI: 10.1530/eje-13-0136] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Systematic studies of autosomal dominant osteopetrosis (ADO) were followed by the identification of underlying mutations giving unique possibilities to perform translational studies. What was previously designated ADO1 turned out to be a high bone mass phenotype caused by a missense mutation in the first propeller of LRP5, a region of importance for binding inhibitory proteins. Thereby, ADO1 cannot be regarded as a classical form of osteopetrosis but must now be considered a disease of LRP5 activation. ADO (Albers-Schönberg disease, or previously ADO2) is characterized by increased number of osteoclasts and a defect in the chloride transport system (ClC-7) of importance for acidification of the resorption lacuna (a form of Chloride Channel 7 Deficiency Osteopetrosis). Ex vivo studies of osteoclasts from ADO have shown that cells do form normally but have reduced resorption capacity and an expanded life span. Bone formation seems normal despite decreased osteoclast function. Uncoupling of formation from resorption makes ADO of interest for new strategies for treatment of osteoporosis. Recent studies have integrated bone metabolism in whole-body energy homeostasis. Patients with ADO may have decreased insulin levels indicating importance beyond bone metabolism. There seems to be a paradigm shift in the treatment of osteoporosis. Targeting ClC-7 might introduce a new principle of dual action. Drugs affecting ClC-7 could be antiresorptive, still allowing ongoing bone formation. Inversely, drugs affecting the inhibitory site of LRP5 might stimulate bone formation and inhibit resorption. Thereby, these studies have highlighted several intriguing treatment possibilities, employing novel modes of action, which could provide benefits to the treatment of osteoporosis.
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Affiliation(s)
- Jens Bollerslev
- Section of Specialized Endocrinology, Medical Clinic B, Rikshospitalet, Oslo University Hospital, N-0027 Oslo, Norway.
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38
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Ciceri S, Cattaneo E, Fossati C, Radice P, Selicorni A, Perotti D. First evidence of vertical paternal transmission of osteopatia striata with cranial sclerosis. Am J Med Genet A 2013; 161A:1173-6. [PMID: 23494899 DOI: 10.1002/ajmg.a.35813] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 11/14/2012] [Indexed: 12/15/2022]
Affiliation(s)
- Sara Ciceri
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
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39
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Herman SB, Holman SK, Robertson SP, Davidson L, Taragin B, Samanich J. Severe osteopathia striata with cranial sclerosis in a female case with wholeWTXgene deletion. Am J Med Genet A 2013; 161A:594-9. [DOI: 10.1002/ajmg.a.35716] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 09/24/2012] [Indexed: 01/01/2023]
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WNT signaling in bone homeostasis and disease: from human mutations to treatments. Nat Med 2013; 19:179-92. [PMID: 23389618 DOI: 10.1038/nm.3074] [Citation(s) in RCA: 1419] [Impact Index Per Article: 129.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 12/18/2012] [Indexed: 12/11/2022]
Abstract
Low bone mass and strength lead to fragility fractures, for example, in elderly individuals affected by osteoporosis or children with osteogenesis imperfecta. A decade ago, rare human mutations affecting bone negatively (osteoporosis-pseudoglioma syndrome) or positively (high-bone mass phenotype, sclerosteosis and Van Buchem disease) have been identified and found to all reside in components of the canonical WNT signaling machinery. Mouse genetics confirmed the importance of canonical Wnt signaling in the regulation of bone homeostasis, with activation of the pathway leading to increased, and inhibition leading to decreased, bone mass and strength. The importance of WNT signaling for bone has also been highlighted since then in the general population in numerous genome-wide association studies. The pathway is now the target for therapeutic intervention to restore bone strength in millions of patients at risk for fracture. This paper reviews our current understanding of the mechanisms by which WNT signalng regulates bone homeostasis.
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Zarate YA, Dwivedi A, Bartel FO, Bellomo MA, Cathey SS, Champaigne NL, Clarkson LK, Dupont BR, Everman DB, Geer JS, Gordon BC, Lichty AW, Lyons MJ, Rogers RC, Saul RA, Schroer RJ, Skinner SA, Stevenson RE. Clinical utility of the X-chromosome array. Am J Med Genet A 2012. [PMID: 23208842 DOI: 10.1002/ajmg.a.35698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Previous studies have limited the use of specific X-chromosome array designed platforms to the evaluation of patients with intellectual disability. In this retrospective analysis, we reviewed the clinical utility of an X-chromosome array in a variety of scenarios. We divided patients according to the indication for the test into four defined categories: (1) autism spectrum disorders and/or developmental delay and/or intellectual disability (ASDs/DD/ID) with known family history of neurocognitive disorders; (2) ASDs/DD/ID without known family history of neurocognitive disorders; (3) breakpoint definition of an abnormality detected by a different cytogenetic test; and (4) evaluation of suspected or known X-linked conditions. A total of 59 studies were ordered with 27 copy number variants detected in 25 patients (25/59 = 42%). The findings were deemed pathogenic/likely pathogenic (16/59 = 27%), benign (4/59 = 7%) or uncertain (7/59 = 12%). We place particular emphasis on the utility of this test for the diagnostic evaluation of families affected with X-linked conditions and how it compares to whole genome arrays in this setting. In conclusion, the X-chromosome array frequently detects genomic alterations of the X chromosome and it has advantages when evaluating some specific X-linked conditions. However, careful interpretation and correlation with clinical findings is needed to determine the significance of such changes. When the X-chromosome array was used to confirm a suspected X-linked condition, it had a yield of 63% (12/19) and was useful in the evaluation and risk assessment of patients and families.
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Chénier S, Noor A, Dupuis L, Stavropoulos DJ, Mendoza-Londono R. Osteopathia striata with cranial sclerosis and developmental delay in a male with a mosaic deletion in chromosome region Xq11.2. Am J Med Genet A 2012; 158A:2946-52. [PMID: 22987541 DOI: 10.1002/ajmg.a.35619] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Accepted: 07/24/2012] [Indexed: 12/31/2022]
Abstract
Osteopathia striata with cranial sclerosis (OSCS) is an X-linked disease caused by mutations involving WTX (FAM123B), a tumor suppressor protein with dual functions. OSCS typically affects females whereas males generally have fetal or neonatal lethality. Surviving affected males have characteristic facial dysmorphisms, skeletal features such as macrocephaly and short stature, neurodevelopmental disabilities and a high prevalence of neuromuscular anomalies. On imaging, hemizygous males display marked cranial and peripheral skeletal sclerosis without the metaphyseal striations that are seen in women with OSCS. Observations of striation in males may be indicative of a somatic mosaic mutation in WTX. To date only two cases of surviving males haves been confirmed with mosaic point mutations in WTX. We report on the first case of a male with a mosaic deletion of the entire WTX gene. We show that a mosaic deletion in a hemizygous male patient can cause a mild phenotype of OSCS, including facial and skull base bone striations, nasal stenosis, conductive hearing loss, global developmental delay, and mild facial dysmorphology without short stature or macrocephaly.
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Affiliation(s)
- Sébastien Chénier
- The Hospital for Sick Children, Department of Paediatric Laboratory Medicine, Toronto, Ontario, Canada
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Zicari AM, Tarani L, Perotti D, Papetti L, Nicita F, Liberati N, Spalice A, Salvatori G, Guaraldi F, Duse M. WTX R353X mutation in a family with osteopathia striata and cranial sclerosis (OS-CS): case report and literature review of the disease clinical, genetic and radiological features. Ital J Pediatr 2012; 38:27. [PMID: 22716240 PMCID: PMC3416731 DOI: 10.1186/1824-7288-38-27] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Accepted: 06/20/2012] [Indexed: 12/22/2022] Open
Abstract
Osteopathia striata with cranial sclerosis (OS-CS) or Horan-Beighton syndrome is a rare X-linked dominant inherited bone dysplasia, characterized by longitudinal striations of long bones and cranial sclerosis. Patients can be asymptomatic or present with typical facial dysmorphism, sensory defects, internal organs anomalies, growth and mental retardation, depending on the severity of the disease. WTX gene (Xq11) has been recently identified as the disease causing gene. Aim of this article is to present the case of a 6 year old girl initially evaluated for bilateral hearing loss. Patient's head CT scan pointed out sclerosis of skull base and mastoid cells, and abnormal middle-ear ossification. Clinical examination of the patient and her mother were suspicious for OS-CS. The diagnosis was confirmed by X-rays examination showing typical longitudinal striation. Genetic analysis allowed the identification of maternally transmitted heterozygous nonsense c.1057C>T (p.R353X) WTX gene mutation. We also provide a systematic review of currently available knowledge about clinical, radiologic and genetic features typical of the OS-CS.
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Affiliation(s)
- Anna Maria Zicari
- Department of Pediatrics, Policlinico Umberto I, Sapienza University, Rome, Italy.
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Camp ND, James RG, Dawson DW, Yan F, Davison JM, Houck SA, Tang X, Zheng N, Major MB, Moon RT. Wilms tumor gene on X chromosome (WTX) inhibits degradation of NRF2 protein through competitive binding to KEAP1 protein. J Biol Chem 2012; 287:6539-50. [PMID: 22215675 PMCID: PMC3307315 DOI: 10.1074/jbc.m111.316471] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
WTX is a tumor suppressor protein that is lost or mutated in up to 30% of cases of Wilms tumor. Among its known functions, WTX interacts with the β-transducin repeat containing family of ubiquitin ligase adaptors and promotes the ubiquitination and degradation of the transcription factor β-catenin, a key control point in the WNT/β-catenin signaling pathway. Here, we report that WTX interacts with a second ubiquitin ligase adaptor, KEAP1, which functions to regulate the ubiquitination of the transcription factor NRF2, a key control point in the antioxidant response. Surprisingly, we find that unlike its ability to promote the ubiquitination of β-catenin, WTX inhibits the ubiquitination of NRF2. WTX and NRF2 compete for binding to KEAP1, and thus loss of WTX leads to rapid ubiquitination and degradation of NRF2 and a reduced response to cytotoxic insult. These results expand our understanding of the molecular mechanisms of WTX and reveal a novel regulatory mechanism governing the antioxidant response.
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Affiliation(s)
- Nathan D Camp
- Howard Hughes Medical Institute, Department of Pharmacology, Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington 98195, USA
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Van Hul W. Sclerosing bone disorders: a lot of knowns but still some unknowns. BONEKEY REPORTS 2012; 1:97. [PMID: 27127625 DOI: 10.1038/bonekey.2012.97] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 04/08/2012] [Indexed: 11/09/2022]
Abstract
In the last decade, many advances have been made in understanding how osteoclasts and osteoblasts work and communicate by elucidation of the molecular genetic causes of many rare bone dysplasias. The relationship between the clinical findings and the molecular defects underlying these aberrant bone phenotypes has given new insights into the molecular machinery of the different bone cell types, and into how they act and interact to regulate bone mass. The study of sclerosing bone dysplasias caused by a disturbance of the balance between bone formation and bone resorption has had an especially high impact. Furthermore, it has also become clear that genetic variation within several of the identified genes contributes to the risk to develop osteoporosis and that in some cases the metabolic pathways involved provide interesting targets for the development of novel treatments for osteoporosis. In this review, some of the sclerosing bone diseases are discussed, focusing on the underlying mechanisms and the broader implications of the insights gained.
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Affiliation(s)
- Wim Van Hul
- Department of Medical Genetics, University of Antwerp , Antwerp, Belgium
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Osteopatía estriada con esclerosis craneal. RADIOLOGIA 2011; 53:564-7. [DOI: 10.1016/j.rx.2010.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Revised: 07/20/2010] [Accepted: 07/21/2010] [Indexed: 11/24/2022]
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Moisan A, Rivera MN, Lotinun S, Akhavanfard S, Coffman EJ, Cook EB, Stoykova S, Mukherjee S, Schoonmaker JA, Burger A, Kim WJ, Kronenberg HM, Baron R, Haber DA, Bardeesy N. The WTX tumor suppressor regulates mesenchymal progenitor cell fate specification. Dev Cell 2011; 20:583-596. [PMID: 21571217 DOI: 10.1016/j.devcel.2011.03.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 02/11/2011] [Accepted: 03/09/2011] [Indexed: 12/14/2022]
Abstract
WTX is an X-linked tumor suppressor targeted by somatic mutations in Wilms tumor, a pediatric kidney cancer, and by germline inactivation in osteopathia striata with cranial sclerosis, a bone overgrowth syndrome. Here, we show that Wtx deletion in mice causes neonatal lethality, somatic overgrowth, and malformation of multiple mesenchyme-derived tissues, including bone, fat, kidney, heart, and spleen. Inactivation of Wtx at different developmental stages and in primary mesenchymal progenitor cells (MPCs) reveals that bone mass increase and adipose tissue deficiency are due to altered lineage fate decisions coupled with delayed terminal differentiation. Specification defects in MPCs result from aberrant β-catenin activation, whereas alternative pathways contribute to the subsequently delayed differentiation of lineage-restricted cells. Thus, Wtx is a regulator of MPC commitment and differentiation with stage-specific functions in inhibiting canonical Wnt signaling. Furthermore, the constellation of anomalies in Wtx null mice suggests that this tumor suppressor broadly regulates MPCs in multiple tissues.
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Affiliation(s)
- Annie Moisan
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Miguel N Rivera
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA.,Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - Sutada Lotinun
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Sara Akhavanfard
- Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - Erik J Coffman
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA.,Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - Edward B Cook
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA.,Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - Svetlana Stoykova
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | | | - Jesse A Schoonmaker
- Center for Regenerative Medicine, Harvard Medical School, Boston, MA 02114, USA
| | - Alexa Burger
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Woo Jae Kim
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | | | - Roland Baron
- Endocrine Unit, Harvard Medical School, Boston, MA 02114, USA.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Daniel A Haber
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Nabeel Bardeesy
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
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Perdu B, Lakeman P, Mortier G, Koenig R, Lachmeijer AMA, Van Hul W. Two novel WTX mutations underscore the unpredictability of male survival in osteopathia striata with cranial sclerosis. Clin Genet 2010; 80:383-8. [PMID: 20950377 DOI: 10.1111/j.1399-0004.2010.01553.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Osteopathia striata with cranial sclerosis (OMIM ##300373) is an X-linked dominant sclerosing bone dysplasia that presents in females with macrocephaly, cleft palate, mild learning disabilities, sclerosis of the long bones and skull, and longitudinal striations visible on radiographs of the long bones, pelvis, and scapulae. In males this entity is usually associated with foetal or neonatal lethality, because of severe heart defects and/or gastrointestinal malformations, and is often accompanied by bilateral fibula aplasia. Recently, the disease-causing gene was identified as the WTX gene (FAM123B). Initially it was suggested that the mutations in the 5' region of the WTX gene are associated with male lethality. Mutation analysis in individuals of two families diagnosed with OSCS revealed two novel WTX mutations. In one family, the affected male is still alive in his teens. These mutations underline the unpredictability of male survival and suggest that WTX mutations should be considered in cases of male cranial sclerosis, even if striations are not present. An overview of all known mutations and their associated characteristics provide a valuable resource for the molecular analysis of OSCS.
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Affiliation(s)
- B Perdu
- Department of Medical Genetics, University Hospital of Antwerp, University of Antwerp, Edegem, Belgium
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49
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Abstract
CONTEXT Osteopathia striata with cranial sclerosis is an X-linked dominant condition caused by mutations in the WTX gene, resulting in linear striations in long bones in combination with cranial sclerosis. This condition is usually lethal in males. OBJECTIVE/PATIENT: Our aim was to determine the underlying genetic cause in a 37-yr-old male with this condition. DESIGN DNA sequencing of peripheral blood and hair was performed to identify mutations in WTX. Quantitative PCR was performed to determine gene copy number variation. RESULTS DNA sequenced from peripheral blood revealed the presence of two alleles at the 1108th position of the WTX gene. Subsequent DNA sequencing of hair follicles and quantitative PCR confirmed the presence of mosaicism. CONCLUSION A novel mutation (c.1108G>T) found in our patient results in a truncated protein (E370X). Our patient represents the first confirmed case of mosaicism in osteopathia striata with cranial sclerosis.
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Affiliation(s)
- Dennis J Joseph
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202-5121, USA
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