Germline mutations of the gene responsible for each FAOD were identified in 90% of alleles (9 out of 10 alleles) in VLCAD deficiency, 90% (9 out of 10 alleles) in MCAD deficiency, 100% (2 out of 2 alleles) in LCHAD/MTP, primary carnitine, CPT1A, and SCAD deficiencies (Table 1). This evidence concerns the gene CPT1A and medium chain acyl-CoA dehydrogenase deficiency.