Several chromosomal loci have now been reported as linked to POAG, such as myocilin (MYOC; GLC1A, MIM 601652), optineurin (OPTN; GLC1E, MIM 602432), and WD repeat domain 36 (WDR36; GLC1G, MIM 609669) [3]. Here, WDR36 is linked to open-angle glaucoma.