The mean serum IgM titers for CP in patients with dry AMD (Group 1), wet AMD (Group 2) and in the controls (Group 3) were 2.09 ± 1.56, 1.27 ± 1.18 and 1.48 ± 0.53 NTU/mL, respectively. This evidence concerns the gene CP and dry age related macular degeneration.