The screening of the CNGB1 gene identified several deleterious missense, nonsense, frameshifts, and splice-site mutations (p.N986I, p.Q88X, p.Q222X, p.Q318X, p.R729X, p.A1048fsX13, p.L849AfsX3, c.761 + 2T>A) in RP-patients with RPE atrophy and intraretinal pigment migration [220]. Here, CNGB1 is linked to retinitis pigmentosa 1.