RecruitingPhase 3Drug trialStudy to Evaluate Sepofarsen in Subjects With Leber Congenital Amaurosis (LCA) Type 10 (HYPERION)The purpose of this double-masked, randomized, placebo-controlled, paired-eye study is to evaluate the efficacy, safety and tolerability of Sepofarsen in subjects with Leber Congenital Amaurosis (LCA) due to the c.2991+1655A\>G (p.Cys998X) mutation in the CEP290.