PHLPP2, KIFC3, CCDC113 localized within the Optic Atrophy 8 locus (OPA8, OMIM 616648) that was linked (LOD score 8.8) to a familiar form of optic neuropathy (40); NT5E mapped within the Retinitis Pigmentosa 63 locus (RP63, OMIM 614494) linked to a dominant form of retinitis pigmentosa (41) and TTC40 to a dominant form of cone-rod dystrophy (CORD17) (42). This evidence concerns the gene KIFC3 and Optic neuropathy.