Additionally, we recommended pre-exercise complex carbohydrates and MCT oil (in any form) in four patients (VLCAD n = 1; LCHAD n = 1; and CPT-II n = 2 deficiencies) to prevent rhabdomyolysis associated with exercise (Additional file 1: Table S3). The gene discussed is CPT2; the disease is very long chain acyl-CoA dehydrogenase deficiency.