RGR and retinitis pigmentosa: Strikingly, eight of the 67 exclusive candidates are associated with retinitis pigmentosa (human orthologues in parentheses): Gnat1 (GNAT1), Rom1a and Rom1b (ROM1), Kfharr-r2 (SAG, ARRESTIN, RP47), Rgra (RGR, RP44), Tbl2 (TBL2), Sec31b (SEC31B) and Glyr1 (GLYR1) (Ba-Abbad et al., 2018; Carrigan et al., 2016; Conley et al., 2017; Sullivan et al., 2017).