Li Cao and Lan Zheng contributed equally to this work as first authors.
Four novel mutations in the GCH1 gene of Chinese patients with dopa-responsive dystonia
Version of Record online: 29 MAR 2010
Copyright © 2010 Movement Disorder Society
Volume 25, Issue 6, pages 755–760, 30 April 2010
How to Cite
Cao, L., Zheng, L., Tang, W.-G., Xiao, Q., Zhang, T., Tang, H.-D., He, S.-B., Wang, X.-J., Ding, J.-Q. and Chen, S.-D. (2010), Four novel mutations in the GCH1 gene of Chinese patients with dopa-responsive dystonia. Mov. Disord., 25: 755–760. doi: 10.1002/mds.22646
Potential conflict of interest: None reported.
- Issue online: 26 APR 2010
- Version of Record online: 29 MAR 2010
- Manuscript Accepted: 4 APR 2009
- Manuscript Revised: 3 APR 2009
- Manuscript Received: 19 NOV 2008
- dopa-responsive dystonia;
Mutation detection in the guanosine triphosphate cyclohydrolase I gene (GCH1) was performed from 4 female patients with dopa-responsive dystonia (DRD). DNA sequencing revealed the presence of four novel mutations including c.2T>C(M1T), c.239G>A(S80N), c.245T>C(L82P), and IVS5+3 del AAGT. These four mutations were not found in 100 genetically unrelated healthy controls with the same ethnic background band. In all 3 childhood-onset patients, DRD started in the legs, and missense mutations were located in the coding region of GCH1. Deletion mutation in the fifth exon–intron boundary of GCH1 was detected in the adult-onset patient. Although the data presented here do not provide sufficient evidence to establish a genotype–phenotype correlation of DRD, it is important to know the clinic features and genetic defects of DRD patients, which will help prenatal diagnosis, early diagnosis, evaluate the prognosis, and facilitate causal therapy with levodopa. © 2010 Movement Disorder Society