In a systematic analysis by Yang J et al. that included 62 unrelated families and a total of 46 likely pathogenic RPGR variants, more than 85% of the patients had RP, while 15% were diagnosed with a variety of X-linked retinal diseases that included CORD, COD, high myopia, and macular dystrophy [41]. This evidence concerns the gene RPGR and Macular dystrophy.