Furthermore, elucidation of the three distinct forms of Usher Syndrome Type 1 demonstrated that USH1B, USH1C, and USH1D are distinct genetic disorders caused by mutations in three different genes, MYO7A, CHD23, and USH1C, respectively [1,2,3,4,5]. The gene discussed is MYO7A; the disease is Usher syndrome type 1.