BACKGROUND: Dystonia syndromes constitute a heterogeneous group of phenotypes that may be caused by different heredodegenerative, metabolic, or genetic diseases. OBJECTIVE: To describe the characteristics of an unusual dystonia-plus phenotype associated with cerebellar atrophy. METHODS: We selected patients with predominant dystonia and cerebellar atrophy among the 861 families referred to us for genetic testing from 1992 to 2003. The main secondary heredodegenerative causes and the major genes responsible for hereditary dystonias and autosomal dominant or recessive ataxias were excluded. RESULTS: We identified 12 patients in 8 families with an unusual dystonia-plus phenotype characterized by dystonia and cerebellar atrophy on brain MRI. The mean age at onset was 27.3 +/- 11.5 years (range: 9 to 42 years) and the mean disease duration 14.7 +/- 7.7 years (range: 4 to 30). At onset, dystonia was focal or multifocal, mainly affecting vocal cords (n = 8) and upper limbs (n = 2). During the disease course spasmodic dysphonia became severe in five patients, leading to complete aphonia in two. Dystonia became generalized in five. Cerebellar ataxia was limited to unsteadiness in most patients and progressed very slowly. The paucity of clinical cerebellar signs contrasted with the marked cerebellar atrophy on brain MRI in most patients. Four families with two affected sibs support the hypothesis of an autosomal recessive disorder. However, X-linked inheritance is possible since only men were affected. CONCLUSION: We have characterized an unusual familial phenotype associating dystonia and cerebellar atrophy in 12 male patients.
BACKGROUND:Dystonia syndromes constitute a heterogeneous group of phenotypes that may be caused by different heredodegenerative, metabolic, or genetic diseases. OBJECTIVE: To describe the characteristics of an unusual dystonia-plus phenotype associated with cerebellar atrophy. METHODS: We selected patients with predominant dystonia and cerebellar atrophy among the 861 families referred to us for genetic testing from 1992 to 2003. The main secondary heredodegenerative causes and the major genes responsible for hereditary dystonias and autosomal dominant or recessive ataxias were excluded. RESULTS: We identified 12 patients in 8 families with an unusual dystonia-plus phenotype characterized by dystonia and cerebellar atrophy on brain MRI. The mean age at onset was 27.3 +/- 11.5 years (range: 9 to 42 years) and the mean disease duration 14.7 +/- 7.7 years (range: 4 to 30). At onset, dystonia was focal or multifocal, mainly affecting vocal cords (n = 8) and upper limbs (n = 2). During the disease course spasmodic dysphonia became severe in five patients, leading to complete aphonia in two. Dystonia became generalized in five. Cerebellar ataxia was limited to unsteadiness in most patients and progressed very slowly. The paucity of clinical cerebellar signs contrasted with the marked cerebellar atrophy on brain MRI in most patients. Four families with two affected sibs support the hypothesis of an autosomal recessive disorder. However, X-linked inheritance is possible since only men were affected. CONCLUSION: We have characterized an unusual familial phenotype associating dystonia and cerebellar atrophy in 12 male patients.
Authors: Terence D Sanger; Daofen Chen; Darcy L Fehlings; Mark Hallett; Anthony E Lang; Jonathan W Mink; Harvey S Singer; Katharine Alter; Hilla Ben-Pazi; Erin E Butler; Robert Chen; Abigail Collins; Sudarshan Dayanidhi; Hans Forssberg; Eileen Fowler; Donald L Gilbert; Sharon L Gorman; Mark E Gormley; H A Jinnah; Barbara Kornblau; Kristin J Krosschell; Rebecca K Lehman; Colum MacKinnon; C J Malanga; Ronit Mesterman; Margaret Barry Michaels; Toni S Pearson; Jessica Rose; Barry S Russman; Dagmar Sternad; Kathy J Swoboda; Francisco Valero-Cuevas Journal: Mov Disord Date: 2010-08-15 Impact factor: 10.338
Authors: Aristide Merola; Alok K Dwivedi; Aasef G Shaikh; Tamour Khan Tareen; Gustavo A Da Prat; Marcelo A Kauffman; Jennie Hampf; Abhimanyu Mahajan; Luca Marsili; Joseph Jankovic; Cynthia L Comella; Brian D Berman; Joel S Perlmutter; Hyder A Jinnah; Alberto J Espay Journal: J Neurol Date: 2019-04-26 Impact factor: 4.849
Authors: Vikram G Shakkottai; Amit Batla; Kailash Bhatia; William T Dauer; Christian Dresel; Martin Niethammer; David Eidelberg; Robert S Raike; Yoland Smith; H A Jinnah; Ellen J Hess; Sabine Meunier; Mark Hallett; Rachel Fremont; Kamran Khodakhah; Mark S LeDoux; Traian Popa; Cécile Gallea; Stéphane Lehericy; Andreea C Bostan; Peter L Strick Journal: Cerebellum Date: 2017-04 Impact factor: 3.847