Academic Commons

Articles

A Novel DYT-5 Mutation with Phenotypic Variability Within a Colombian Family

Bernal-Pacheco, Oscar; Oyama, Genko; Briton, Angela; Singleton, Andrew B.; Fernandez, Hubert H.; Rodriguez, Ramon L.; Malaty, Irene A.; Okun, Michael S.

DYT‐5 dystonia usually presents as a dopa‐responsive dystonia (DRD) with early or late parkinsonian manifestations and/or dystonic features. Genetically, these patients have been described as having a wide array of independent mutations in the guanosine triphosphate cyclohydrolase 1 gene (GCH1), and these patients may also have a wide array of clinical manifestations. Methods A Colombian family with six affected female members was characterized. Results Three members, including the index case, revealed mild parkinsonism, whereas three granddaughters of the index case showed severe generalized dystonia. No men were affected. There was anticipation, and a female predominance was uncovered. Treatment with levodopa was generally effective except in a case with severe skeletal deformities and contractions. Detailed genetic analysis in the index case revealed a new mutation in exon 1 of GCH1 (c.159delG). Discussion This study revealed a new mutation of GCH1 that resulted in heterogeneous clinical presentations of DRD within a large family.

Subjects

Files

Also Published In

Title
Tremor and Other Hyperkinetic Movements

More About This Work

Academic Units
Center for Parkinson's Disease and Other Movement Disorders
Published Here
January 31, 2014
Academic Commons provides global access to research and scholarship produced at Columbia University, Barnard College, Teachers College, Union Theological Seminary and Jewish Theological Seminary. Academic Commons is managed by the Columbia University Libraries.