Some other genes have also been found to display phenotypes similar to STGD1, such as ELOVL4 mutations associated with the autosomal dominant Stargardt disease 3 (STGD3, OMIM: 600110) [17,18], and PROM1 mutations related to the autosomal dominant Stargardt disease 4 (STGD4, OMIM: 603786) [19,20,21]. This evidence concerns the gene ABCA4 and Stargardt disease 4.