title: Atypical phenylketonuria due to tetrahydrobiopterin deficiency. Diagnosis and treatment with tetrahydrobiopterin, dihydrobiopterin and sepiapterin.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008297:Male; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias / Q000175:diagnosis / Q000188:drug therapy / Q000201:enzymology*; D011622:Pterins / Q000172:deficiency* / Q000627:therapeutic use / Q000652:urine
chemical_list: D011622:Pterins; D010649:Phenylalanine