In addition, we provide further phenotypic data from 34 CNGB1‐related RP cases, which, overall, are in line with previous findings suggesting that this form of RP has long‐term retention of useful central vision despite the early onset of night blindness, which is valuable for patient counseling, but also has implications for it being considered a priority target for gene therapy trials. Here, CNGB1 is linked to night blindness.