PDE6B and retinitis pigmentosa 1: While variants identified in the TULP1 (NM_001289395.1:c.1307A>G:p.Lys436Arg) and in the CNGA1 (NM_001142564.1: c.1298G>A:p.Gly433Asp) genes were formerly known to cause RP [18,31], DNA changes in PDE6B and in RPE65 have never been reported in any public databases.