%0 Journal Article %T Chromosome 9p21 primary open-angle glaucoma susceptibility locus: a review. %A Ng SK %A Casson RJ %A Burdon KP %A Craig JE %J Clin Exp Ophthalmol %V 42 %N 1 %D Jan-Feb 2014 %M 24112133 %F 4.383 %R 10.1111/ceo.12234 %X Primary open-angle glaucoma (POAG) is a genetically complex disease. Genome-wide association study (GWAS) is a particularly useful tool in the search for genetic contributions to glaucoma. Recently, chromosome 9p21 has become a major focus of research endeavour, with multiple genome-wide association studies suggesting associations to POAG. Herein, we provide a review of the chromosome 9p21 susceptibility locus as a risk factor for POAG.