RHO and autosomal dominant retinitis pigmentosa: Importantly, several patient mutations in the corresponding proline in rhodopsin have been identified and linked to autosomal dominant retinitis pigmentosa (adRP), including P171S, P171Q, and P171L (Dryja et al., 1991; Antiolo et al., 1994; Vaithinathan et al., 1994; Zhen et al., 2023).