PubMed:15710860 JSONTXT 2 Projects

TIAB (Title and Abstract)
A novel intronic mutation in the DDP1 gene in a family with X-linked dystonia-deafness syndrome.
BACKGROUND: X-linked dystonia-deafness syndrome (Mohr-Tranebjaerg syndrome) is a rare neurodegenerative disease characterized by hearing loss and dystonia. So far, 7 mutations in the coding region of the DDP1 gene have been described. They consist of frameshift, nonsense, missense mutations or deletions.
OBJECTIVE: To investigate the presence of mutations in the DDP1 gene in a family with dystonia-deafness syndrome.
DESIGN: Seven members belonging to 2 generations of a family with 2 affected subjects underwent genetic analysis. Mutational screening in the DDP1 gene was made through DNA direct sequencing.
RESULTS: We found an intronic mutation in the DDP1 gene. It consists of an A-to-C substitution in the position -23 in reference to the first nucleotide of exon 2 (IVS1-23A>C). The mutation was present in 2 affected men and their respective unaffected mothers, whereas it was absent in the healthy men from this family and in 90 healthy controls.
CONCLUSIONS: Intronic mutations in the DDP1 gene can also cause X-linked dystonia-deafness syndrome. In our case, the effect of the mutation could be due to a splicing alteration.

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