PPARA and neuroblastoma: Although best known for their role in peroxisome proliferation, PPARs have also been reported to modulate the expression of genes involved in mitochondrial β-oxidation (e.g., through PPARα in mouse liver [34] or PPARβ in murine adipocytes and cardiomyocytes [35]) and biogenesis (e.g., through PPARα in monkey liver [36] and PPARγ in differentiated human neuroblastoma cells [37]).