BACKGROUND: A locus implicated in autosomal dominant cervical dystonia was assigned to chromosome 18p in 1 large family more than 15 years ago. This locus was designated DYT7. We reanalyzed the family clinically and genetically. METHODS: Clinical reevaluation of all family members was performed. There was Sanger sequencing of candidate genes, SNP array analysis, and exome sequencing in definitely affected family members. RESULTS: Diagnosis of cervical dystonia was definite in 6 family members and possible in 12. Analysis of candidate genes in 18p revealed no alteration in definitely affected patients. There was no disease causing copy number variant in 18p. No potentially disease-causing mutations were detected in 18p by exome sequencing. The CIZ1 gene, mutated in some cases of cervical dystonia, was excluded. CONCLUSIONS: Location of DYT7 on 18p in autosomal dominant cervical dystonia is questionable. We demonstrate genetic heterogeneity of this form of dystonia.
BACKGROUND: A locus implicated in autosomal dominant cervical dystonia was assigned to chromosome 18p in 1 large family more than 15 years ago. This locus was designated DYT7. We reanalyzed the family clinically and genetically. METHODS: Clinical reevaluation of all family members was performed. There was Sanger sequencing of candidate genes, SNP array analysis, and exome sequencing in definitely affected family members. RESULTS: Diagnosis of cervical dystonia was definite in 6 family members and possible in 12. Analysis of candidate genes in 18p revealed no alteration in definitely affected patients. There was no disease causing copy number variant in 18p. No potentially disease-causing mutations were detected in 18p by exome sequencing. The CIZ1 gene, mutated in some cases of cervical dystonia, was excluded. CONCLUSIONS: Location of DYT7 on 18p in autosomal dominant cervical dystonia is questionable. We demonstrate genetic heterogeneity of this form of dystonia.
Authors: Satya R Vemula; Andreas Puschmann; Jianfeng Xiao; Yu Zhao; Monika Rudzińska; Karen P Frei; Daniel D Truong; Zbigniew K Wszolek; Mark S LeDoux Journal: Hum Mol Genet Date: 2013-02-27 Impact factor: 6.150
Authors: H A Jinnah; Alfredo Berardelli; Cynthia Comella; Giovanni Defazio; Mahlon R Delong; Stewart Factor; Wendy R Galpern; Mark Hallett; Christy L Ludlow; Joel S Perlmutter; Ami R Rosen Journal: Mov Disord Date: 2013-06-15 Impact factor: 10.338
Authors: I Rubio-Agusti; I Pareés; M Kojovic; M Stamelou; T A Saifee; G Charlesworth; U M Sheerin; M J Edwards; K P Bhatia Journal: Parkinsonism Relat Disord Date: 2013-03-21 Impact factor: 4.891
Authors: Kin Y Mok; Susanne A Schneider; Daniah Trabzuni; Maria Stamelou; Mark Edwards; Dalia Kasperaviciute; Stuart Pickering-Brown; Monty Silverdale; John Hardy; Kailash P Bhatia Journal: Mov Disord Date: 2013-11-13 Impact factor: 10.338