3-Hydroxyacyl-Coa Dehydrogenase Deficiency, also known as deficiency of 3-hydroxyacyl-coa dehydrogenase, is related to long-chain 3-hydroxyacyl-coa dehydrogenase deficiency and hyperinsulinemic hypoglycemia, familial, 4, and has symptoms including emaciation An important gene associated with 3-Hydroxyacyl-Coa Dehydrogenase Deficiency is HADH (Hydroxyacyl-CoA Dehydrogenase). The drugs Elvitegravir and Methadone have been mentioned in the context of this disorder. Affiliated tissues include liver and skeletal muscle, and related phenotypes are hypotonia and feeding difficulties in infancy