Other metabolic conditions detected were: 6 hypermethioninemia, 1 tyrosinemia type 3, 2 branched‐chain amino acid transferase 2 deficiencies (BCAT‐2), 2 homocystinuria (cystathionine beta‐synthase deficiencies), 1 cystinuria, 2 ornithine transcarbamylase (OTC) deficiencies, 2 citrullinemia type I (CTLN1), 1 multiple acyl‐coA dehydrogenation deficiency (MADD), 2 carnitine palmitoyltransferase type 2 (CPT‐II) deficiency, 1 CPT 1 deficiency (CPT‐I), and 7 MCG‐3 (Table 1). The gene discussed is ASS1; the disease is cystinuria.