ABCA4 and Rod-cone dystrophy: Through a meta-analysis of published literature38,39, we also found that individuals with inherited retinal disease caused by recessive ABCA4 deficiency (Stargardt disease or cone rod dystrophy) are likely to have ASO-amenable variants in similar proportions (Supplementary Note 7 and Supplementary Tables 15 and 16), leading us to suggest that around 15% is a reasonable first estimate for other recessive genetic conditions.