CPT2 and ornithine carbamoyltransferase deficiency: However, for some fatty acid oxidations disorders, organic acidemias and urea cycle disorders, at least half of the patients presented with clinical symptoms (LCHADD: 1/2, CPT‐II: 1/2, PA: 5/6, MMAHC: 3/7, MSUD: 2/4, OTC deficiency 2/2).