preferred_name: GTP cyclohydrolase I deficiency
preferred_name_lc: gtp cyclohydrolase i deficiency
label: Hyperphenylalaninemia, Tetrahydrobiopterin-Deficient, Due To GTP Cyclohydrolase I Deficiency
label_lc: hyperphenylalaninemia, tetrahydrobiopterin-deficient, due to gtp cyclohydrolase i deficiency