Atsena Therapeutics, a clinical-stage gene therapy company focused on using the life-changing power of genetic medicine to reverse or prevent blindness, announced that dosing is complete in adults enrolled in Part B of the LIGHTHOUSE study, the Phase I/II/III clinical trial evaluating subretinal injection of ATSN-201 for the treatment of X-linked retinoschisis (XLRS). Based on the evaluation of preliminary data from the adult cohort, dosing of the pediatric patients is expected to begin in the fourth quarter of 2025, pending approval from the Data Monitoring Committee.