Other marker genes include COL8A2 that was used in the study by Maiti et al., and SLC4A11 used in the studies by Català et al. and Ligocki et al. COL8A2 and SLC4A11 seem to play significant roles in the corneal endothelium, since mutations in these genes are associated with congenital hereditary endothelial dystrophy, posterior polymorphous corneal dystrophy, and Fuchs endothelial corneal dystrophy (Table 3). The gene discussed is COL8A2; the disease is posterior polymorphous corneal dystrophy.