USH2A and retinitis pigmentosa 1: Melanocyte-related genes such as microphthalmia-associated transcription factor (MITF) and SRY-related HMG-box gene 10 (SOX10) have been linked to pigmentation disorders with ocular manifestations [8]; however, RP is more commonly associated with the rhodopsin gene (RHO), usherin gene (USH2A), RP GTPase regulator gene (RPGR), and other retinal-specific genes [3].