Figure 2. Distributions of the Causative Variant Types in ORF15. A. DM variants of RPGR ORF15 from the commercial version of the human gene mutation database (HGMD). The HGMD is a compilation of all the causative variants reported in the literature. B. The pathogenic, likely pathogenic, and uncertain variants of RPGR ORF15 identified through clinical testing at PreventionGenetics.