The genes that have found to be mutated in FA patients are called FANC. The genes FANCA, FANCB, FANCC, FANCD1 (also known as BRCA2), FANCD2, FANCE, FANCF, FANCG, FANCI, FANCJ, FANCL, FANCM, FANCN, FANCO, FANCP, and FANCQ have been identified as responsible for FA [2-5]. The gene discussed is ERCC4; the disease is Friedreich ataxia.