RDH12 and retinal degeneration: We previously showed by RT-qPCR analysis that the expression of both Rdh12 and Abca4, two genes that contribute to the visual cycle, was reduced in the retina of Prom1-KO mice compared with that of WT mice at P14 (Dellett et al., 2015), and we suggested that impairment of the visual cycle might lead to retinal degeneration.