The condition results from mutations in the ATP-binding cassette, subfamily A, member 4 (ABCA4) gene A photoreceptor cell-specific ATP-binding transporter gene (ABCR) that is mutated in recessive Stargardt macular dystrophy [3], which encodes a transmembrane flippase localized in photoreceptor outer segments. This evidence concerns the gene ABCA4 and Stargardt disease.