4.3 Review

Molecular genetics of primary open-angle glaucoma

Journal

INDIAN JOURNAL OF OPHTHALMOLOGY
Volume 71, Issue 5, Pages 1739-1756

Publisher

WOLTERS KLUWER MEDKNOW PUBLICATIONS
DOI: 10.4103/IJO.IJO_2570_22

Keywords

Cytochrome P450; genetics; myocilin; optineurin; primary open-angle glaucoma

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Glaucoma is a series of optic diseases that lead to progressive vision loss and total blindness. The most common type is primary open-angle glaucoma (POAG), which is a complex condition influenced by both environmental and genetic factors. The number of glaucoma patients is expected to increase globally, with Asia and Africa being the most affected regions. Research has shown the significant role of genes and their variants in the pathogenesis of POAG.
Glaucoma is a series of linked optic diseases resulting in progressive vision loss and total blindness due to the acquired loss of retinal ganglion cells. This harm to the optic nerve results in visual impairment and, ultimately, total blindness if left untreated. Primary open-angle glaucoma (POAG) is the most frequent variety within the large family of glaucoma. It is a multifaceted and heterogeneous condition with several environmental and genetic variables aiding in its etiology. By 2040, there will be 111.8 million glaucoma patients globally, with Asia and Africa accounting for the vast majority. The goal of this review is to elaborate on the role of genes (nuclear and mitochondrial) as well as their variants in the pathogenesis of POAG. PubMed and Google Scholar databases were searched online for papers until September 2022. Prevalence and inheritance patterns vary significantly across different ethnic and geographic populations. Numerous causative genetic loci may exist; however, only a few have been recognized and characterized. Further investigation into the genetic etiology of POAG is expected to uncover novel and intriguing causal genes, allowing for a more precise pathogenesis pattern of the disease.

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