. . . . . . . . . . . . "[Autosomal recessive mutations in the 6-pyruvoyltetrahydropterin synthase (PTPS) gene are the most common reason for hyperphenylalaninemia due to tetrahydrobiopterin deficiency.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2014-02-25"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:37:10+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .