A functional variant in the CFI gene confers a high risk of age-related macular degeneration

Johannes van de Ven and colleagues report a rare missense mutation in CFI encoding a p.Gly119Arg substitution that confers a high risk of AMD. Sera from AMD cases carrying the p.Gly119Arg variant mediate the degradation of C3b at a significantly lower level than sera from AMD cases without the CFI variant.