RHO and retinitis pigmentosa 1: In fact, it has been reported that sector RP is caused by a number of RHO mutations, including p.T4K [38], p.N15S [39–41], p.T17M [33, 42], p.P23H [10], p.T58R [12], p.N78I [43], and G106R [11, 25, 44].