We know about long-term intravitreal injections that might slow the progression of geographic atrophy (GA). But could a gene therapy in the pipeline require fewer treatments and still yield results? Jeffrey Heier, MD, summarized an AAO presentation on the phase 1 data of JNJ-1887 (Janssen), a potential gene therapy for GA. Was it safe—and were there signs of efficacy? Michel Michaelides, BSc, MB,, BS MD(Res), FRCOphth, joined us to speak about a gene therapy targeting x-linked retinitis pigmentosa. With a phase 3 study for the drug AAV5-RPGR (Jannsen/MeiraGTx) already underway, what can we learn from earlier trial results?