GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation
Background. Hereditary inclusion body myopathy is caused by biallelic defects in the GNE gene located on chromosome 9p13. It generally affects adults older than 20 years of age. Methods and Results. In this study, we present two Turkish sisters with progressive myopathy and describe a novel mutation...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Case Reports in Neurological Medicine |
| Online Access: | http://dx.doi.org/10.1155/2016/8647645 |
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| author | Gulden Diniz Yaprak Secil Serdar Ceylaner Figen Tokucoglu Sabiha Türe Mehmet Celebisoy Tülay Kurt İncesu Galip Akhan |
| author_facet | Gulden Diniz Yaprak Secil Serdar Ceylaner Figen Tokucoglu Sabiha Türe Mehmet Celebisoy Tülay Kurt İncesu Galip Akhan |
| author_sort | Gulden Diniz |
| collection | DOAJ |
| description | Background. Hereditary inclusion body myopathy is caused by biallelic defects in the GNE gene located on chromosome 9p13. It generally affects adults older than 20 years of age. Methods and Results. In this study, we present two Turkish sisters with progressive myopathy and describe a novel mutation in the GNE gene. Both sisters had slightly higher levels of creatine kinase (CK) and muscle weakness. The older sister presented at 38 years of age with an inability to climb steps, weakness, and a steppage gait. Her younger sister was 36 years old and had similar symptoms. The first symptoms of the disorder were seen when the sisters were 30 and 34 years old, respectively. The muscle biopsy showed primary myopathic features and presence of rimmed vacuoles. DNA analysis demonstrated the presence of previously unknown homozygous mutations [c.2152 G>A (p.A718T)] in the GNE genes. Conclusion. Based on our literature survey, we believe that ours is the first confirmed case of primary GNE myopathy with a novel missense mutation in Turkey. These patients illustrate that the muscle biopsy is still an important method for the differential diagnosis of vacuolar myopathies in that the detection of inclusions is required for the definitive diagnosis. |
| format | Article |
| id | doaj-art-f06f65412b59449f98efd0694914db09 |
| institution | Kabale University |
| issn | 2090-6668 2090-6676 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Neurological Medicine |
| spelling | doaj-art-f06f65412b59449f98efd0694914db092025-02-03T00:59:27ZengWileyCase Reports in Neurological Medicine2090-66682090-66762016-01-01201610.1155/2016/86476458647645GNE Myopathy in Turkish Sisters with a Novel Homozygous MutationGulden Diniz0Yaprak Secil1Serdar Ceylaner2Figen Tokucoglu3Sabiha Türe4Mehmet Celebisoy5Tülay Kurt İncesu6Galip Akhan7Department of Pathology, Neuromuscular Diseases’ Centre, Tepecik Research and Training Hospital, Izmir, TurkeyDepartment of Neurology, Atatürk Research and Training Hospital, Izmir, TurkeyDepartment of Medical Genetics, Intergen Laboratory, Ankara, TurkeyDepartment of Neurology, Neuromuscular Diseases’ Centre, Tepecik Research and Training Hospital, Izmir, TurkeyDepartment of Neurology, Katip Çelebi University, Izmir, TurkeyDepartment of Neurology, Atatürk Research and Training Hospital, Izmir, TurkeyDepartment of Neurology, Katip Çelebi University, Izmir, TurkeyDepartment of Neurology, Katip Çelebi University, Izmir, TurkeyBackground. Hereditary inclusion body myopathy is caused by biallelic defects in the GNE gene located on chromosome 9p13. It generally affects adults older than 20 years of age. Methods and Results. In this study, we present two Turkish sisters with progressive myopathy and describe a novel mutation in the GNE gene. Both sisters had slightly higher levels of creatine kinase (CK) and muscle weakness. The older sister presented at 38 years of age with an inability to climb steps, weakness, and a steppage gait. Her younger sister was 36 years old and had similar symptoms. The first symptoms of the disorder were seen when the sisters were 30 and 34 years old, respectively. The muscle biopsy showed primary myopathic features and presence of rimmed vacuoles. DNA analysis demonstrated the presence of previously unknown homozygous mutations [c.2152 G>A (p.A718T)] in the GNE genes. Conclusion. Based on our literature survey, we believe that ours is the first confirmed case of primary GNE myopathy with a novel missense mutation in Turkey. These patients illustrate that the muscle biopsy is still an important method for the differential diagnosis of vacuolar myopathies in that the detection of inclusions is required for the definitive diagnosis.http://dx.doi.org/10.1155/2016/8647645 |
| spellingShingle | Gulden Diniz Yaprak Secil Serdar Ceylaner Figen Tokucoglu Sabiha Türe Mehmet Celebisoy Tülay Kurt İncesu Galip Akhan GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation Case Reports in Neurological Medicine |
| title | GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation |
| title_full | GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation |
| title_fullStr | GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation |
| title_full_unstemmed | GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation |
| title_short | GNE Myopathy in Turkish Sisters with a Novel Homozygous Mutation |
| title_sort | gne myopathy in turkish sisters with a novel homozygous mutation |
| url | http://dx.doi.org/10.1155/2016/8647645 |
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