Coenzyme Q10 Deficiency, Primary, 9, also known as coq10d9, is related to coenzyme q10 deficiency, primary, 6 and coenzyme q10 deficiency disease. An important gene associated with Coenzyme Q10 Deficiency, Primary, 9 is COQ5 (Coenzyme Q5, Methyltransferase), and among its related pathways/superpathways are Metabolism and Metabolism of steroids. Affiliated tissues include brain and eye, and related phenotypes are ataxia and global developmental delay