Conversely, SRP1400-II:1 and USHI105-II:1 display predominantly RP-like phenotypes, where the ABCA4 genotype seem to play a more subtle role compared to the HK1 or MYO7A variants, possibly functioning as modifiers rather than primary drivers of the disease at least at this time point. Here, MYO7A is linked to retinitis pigmentosa 1.