Mutations in the rod cyclic nucleotide-gated channel β 1 (CNGB1) gene cause autosomal recessive RP type 45 (RP45) (12–23) (Supplemental Table 1; supplemental material available online with this article; https://doi.org/10.1172/JCI95161DS1) and account for approximately 4% of autosomal recessive RP cases (1). This evidence concerns the gene CNGB1 and retinitis pigmentosa 1.