After 6 months of fenofibrate therapy, acylcarnitine levels showed evidence of improved beta-fatty acid oxidation (presumably as a result of increased CPT2 activity), as observed for bezafibrate therapy in patients with CPT2 deficiency by Bonnefont et al. (Table 2) [2, 10, 11]. Here, CPT2 is linked to hyperinsulinemic hypoglycemia, familial, 4.