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Cruz S, Figueroa-Bonaparte S, Gallardo E, de Becdelièvre A, Gartioux C, Allamand V, Piñol P, Garcia MAR, Jiménez-Mallebriera C, Llauger J, González-Rodríguez L, Cortes-Vicente E, Illa I, Díaz-Manera J. Bethlem Myopathy Phenotypes and Follow Up: Description of 8 Patients at the Mildest End of the Spectrum. J Neuromuscul Dis 2018; 3:267-274. [PMID: 27854213 DOI: 10.3233/jnd-150135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The classical phenotypes of collagen VI-associated myopathies are well described. Little is known, however, about the progression of patients at the mildest end of the clinical spectrum. In this report, we describe the clinical findings and the results of MRI, muscle biopsy, collagen VI expression in cultured skin fibroblasts and genetic tests of a series of patients with Bethlem myopathy. Our series highlights the existence of mild presentations of this disorder that progresses only slightly and can easily be overlooked. Analysis of the genetic studies suggests that missense mutations can be associated to a milder clinical presentation. Muscle MRI is extremely useful as it shows a pathognomonic pattern in most patients, especially those with some degree of muscle weakness.
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Affiliation(s)
- Simao Cruz
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Department of Neurology, Hospital Prof, Doutor Fernando Fonseca, Amadora, Portugal
| | - Sebastian Figueroa-Bonaparte
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
| | - Eduard Gallardo
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
| | - Alix de Becdelièvre
- Unité Fonctionnelle de Cardiogénétique et Myogénétique Moléculaire, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
| | - Corine Gartioux
- Sorbonne Universités, UPMC Univ Paris 06, Inserm UMRS974, CNRS FRE3617, Center for Research in Myology, Institut de Myologie, GH Pitié-Salpêtrière, Paris, France
| | - Valérie Allamand
- Sorbonne Universités, UPMC Univ Paris 06, Inserm UMRS974, CNRS FRE3617, Center for Research in Myology, Institut de Myologie, GH Pitié-Salpêtrière, Paris, France
| | - Patricia Piñol
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
| | | | | | - Jaume Llauger
- Department of Radiology, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain
| | - Lidia González-Rodríguez
- Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain.,Department of Genetic, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain
| | - Elena Cortes-Vicente
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
| | - Isabel Illa
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
| | - Jordi Díaz-Manera
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau de Barcelona, Universitat Autónoma de Barcelona, Spain.,Centro de Investigación Básica en Red en Enfermedaded Raras (CIBERER), Spain
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