ABI-201 is an engineered AAV.N54 vector that expresses a soluble CD59 variant and a complement 3 (C3) inhibitor fusion protein. ABI-201 was developed by Avirmax Biopharma Inc. to confer photoreceptor protection against retinal damage. The effects of ABI-201 were tested in a sodium iodate-induced retinal damage model in nonhuman primates, a widely used model for testing therapies for age-related macular degeneration (AMD).