The Fas signaling pathway plays a central role in activating cell death. As such, it is implicated in a range of conditions and has been associated with ophthalmic diseases. ONL Therapeutics is developing therapies that target Fas signaling to address a range of retinal conditions. We spoke to Connie Chang, chief operating officer for ONL Therapeutics, about the role Fas-signaling plays in cell death, how this underlies a number of retinal diseases, and the company’s experimental therapy to inhibit Fas signaling.