CPT2 and hyperinsulinemic hypoglycemia, familial, 4: One of the inherited causes of rhabdomyolysis is carnitine palmitoyltransferase II (CPT II) deficiency [1], which is an autosomal recessive disorder that impairs the ability of muscle cells to metabolize long-chain fatty acids for energy, particularly during prolonged exercise, resulting in energy depletion and muscle damage.