Phase I/II Open-Label Trial of UGX202 for Advanced Retinitis Pigmentosa

This is a single-arm, open-label study employing a 3+3 dose escalation design to evaluate two UGX202 dose groups: the low-dose group (1.2×10¹¹ vg/eye) and the high-dose group (3.5×10¹¹ vg/eye). According to the \"Dose Escalation Rule\" (see below), each dose group comprised 3-6 study participants; thus, a total of 6-12 study participants were enrolled in this phase. Participants were enrolled in ascending order from the lowest to the highest dose; each study participant could participate in only one dose group (defined as having received the investigational drug - participants who had not received the drug were not considered to have participated in any dose group), and could not participate in multiple dose groups sequentially.