. . . . . . . . . . . . "[We found that dominantly inherited, hereditary progressive dystonia (HPD), first described by Segawa and also called dopa responsive dystonia (DRD), is caused by the mutations of GTP cyclohydrolase I gene, the partial decrease in the enzyme activity, and probably in striatal dopamine level, to less than 20% of the normal values.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2015-02-27"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2015-08-25T14:47:11+02:00"^^ . . . . . . . . . . . "v3.0.0.0" . "v3.0.0" .