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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] [What about the content of this article? (0)] [Affiliation(s)] [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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