Character Biosciences

Character Biosciences is a precision medicine company developing targeted therapies for progressive polygenic diseases, starting in ophthalmology with age-related macular degeneration (AMD). By pairing human genetics with longitudinal clinical and retinal imaging data from thousands of consented patients - and layering AI-enabled biomarker analysis on top - Character reclassifies broad diagnoses into genetically defined subtypes so it can design drugs that target the root drivers of disease progression. Its lead programs, CTX114 (a complement inhibitor for geographic atrophy) and CTX203 (a lipid regulator to prevent progression to advanced AMD), are advancing toward the clinic on the strength of a Series B that grew past $110 million.