For example, the association between FECD and intronic rs613872 of the TCF4 gene, reported in both GWAS studies [38,40], was confirmed in FECD patients from Germany [55], Greece [56], Midwestern United States [57], and Australia [58], but not in patients from China [59] and Thailand [60]. This evidence concerns the gene TCF4 and Fuchs endothelial corneal dystrophy.