Bifunctional Enzyme Deficiency is related to d-bifunctional protein deficiency and adrenoleukodystrophy. An important gene associated with Bifunctional Enzyme Deficiency is EHHADH (Enoyl-CoA Hydratase And 3-Hydroxyacyl CoA Dehydrogenase), and among its related pathways/superpathways are Fatty acid metabolism and Peroxisomal lipid metabolism. The drugs Fludarabine and Acetylcysteine have been mentioned in the context of this disorder. Affiliated tissues include liver and retina.