A case of retinitis pigmentosa homozygous for a rare CNGA1 causal variant

Retinitis pigmentosa (RP) is a heterogenous hereditary disorder leading to blindness. Despite using next-generation sequencing technologies, causal variants in about 60% of RP cases remain unknown. The heterogeneous genetic inheritance pattern makes it difficult to pinpoint causal variants. Besides, rare penetrating variants are hardly observed in general case-control studies. Thus, a family-based analysis, specifically in a consanguineous...