In previous studies, genetic loci and responsible genes associated with various glaucomas have been identified: the trabecular meshwork glaucocorticoid response gene (TIGR/myocillin) in chromosome 1q23–25 is associated with juvenile-onset open angle glaucoma, the gene in chromosome 7q36 with pigment dispersion syndrome, and the cytochrome P4501B1 (CYP1B1) gene in chromosome 2p21 with primary congenital glaucoma [1]. The gene discussed is MYOC; the disease is glaucoma.