CFH and age-related macular degeneration: The majority of the participants (63%) carried the ???3/???3 genotype and 26% carried at least one at risk ???2 allele (Table 2); these frequencies are similar to the ones we have observed previously in a similar population.[38] In relation to the CFH gene, we conducted separate analyses for the two SNPs of the CFH gene known to be associated with the risk of AMD: rs1061170 (n = 107) and rs2274700 (n = 103).