In a study by Oz et al., copy number genotyping was performed for GSTM1, GSTT1, and GSTP1 in 35 patients with neovascular AMD and 159 controls, and no statistically significant associations were observed between GSTM1, GSTT1, or GSTP1 individually and AMD[58]. Here, GSTP1 is linked to age-related macular degeneration.