FANCB and Friedreich ataxia: Recently, mutations in 19 genes related to the Fanconi anemia (FA) pathway were created (fanca, fancb, fancc, fancd1/brca2, fancd2, fance, fancf, fancg, fanci, fancj/brip1, fancl, fancm, fancn/palb2, fanco/rad51c, fancp/slx4, fancq/ercc4, fanct/ube2t, faap100, and faap24).