1
|
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.
Collapse
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
| |
Collapse
|
2
|
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.
Collapse
Affiliation(s)
| | - Noelia Ramírez
- Pediatric Division, Hospital Virgen de Altagracia, Manzanares, Spain
| | | | | | | |
Collapse
|
4
|
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.
Collapse
|
5
|
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.
Collapse
|