LOXL1 rs3825943: Understanding Genetic Risk for Pseudoexfoliation
The rs3825943 variant is a genetic marker located within the LOXL1 gene, which is primarily associated with susceptibility to pseudoexfoliation syndrome and secondary glaucoma. This condition involves the abnormal accumulation of protein deposits in the eye, which can lead to increased intraocular pressure.
What each genotype means
Baseline risk profile
This genotype represents the common form of the LOXL1 gene at this position. Research indicates that individuals with this genotype generally do not carry the specific risk-associated allele linked to pseudoexfoliation syndrome at this site, though overall risk is influenced by multiple genetic and environmental factors.
This is a common genotype found across most global populations, though frequencies vary significantly by ancestry.
Increased susceptibility profile
Carrying one copy of the A allele is associated with an increased statistical risk for developing pseudoexfoliation syndrome and secondary glaucoma compared to those without it. Because this condition is complex and multifactorial, this result does not mean you will develop the condition, but rather that your genetic predisposition is higher than average.
This heterozygous genotype is frequently observed in global cohorts, with the A allele showing high prevalence in many populations.
Elevated susceptibility profile
This genotype is associated with a higher statistical risk for pseudoexfoliation syndrome and related glaucoma compared to the G/G or G/A genotypes. While this variant is a major genetic factor, the development of the condition is influenced by age and other environmental triggers, so this finding is not a diagnosis.
This homozygous genotype is common in many populations, reflecting the high frequency of the A allele globally.
What is rs3825943 and Where is it Located?
The variant rs3825943 is a single nucleotide polymorphism (SNP) situated within the LOXL1 gene on chromosome 15. In the context of human genetics, SNPs represent the most common type of genetic variation, where a single "letter" of the DNA code differs between individuals. The LOXL1 gene, which stands for lysyl oxidase-like 1, provides instructions for creating an enzyme that plays a critical role in the structural integrity of the body's tissues. Because this variant is located in a region of the gene that influences how the protein is constructed or regulated, researchers have focused on it as a potential contributor to specific health traits. It is important to note that having a specific variant at this location does not mean an individual will develop a condition; rather, it is one of many factors that scientists study to understand the biological pathways behind complex, age-related eye disorders.
The Role of the LOXL1 Gene
The LOXL1 gene is essential for the formation and maintenance of elastic fibers in the extracellular matrix, the structural framework that supports cells throughout the body. In the eye, these fibers are vital for maintaining the health of the lens and the drainage structures that regulate fluid pressure. When the LOXL1 enzyme does not function optimally, it can lead to the abnormal accumulation of microfibrillar deposits, a hallmark of pseudoexfoliation syndrome. This condition is characterized by the buildup of these protein-like materials, which can clog the eye's drainage system and potentially lead to secondary glaucoma. Research into LOXL1 has highlighted its importance in maintaining the elasticity of ocular tissues, and variations in this gene are thought to influence the efficiency of this process as individuals age.
Research Associations and Evidence Strength
Scientific research has identified a strong statistical association between specific variants in the LOXL1 gene and the risk of developing pseudoexfoliation syndrome. While rs3825943 is frequently studied alongside other nearby variants, the evidence for its individual impact is considered limited or context-dependent. Many studies have shown that the risk associated with these variants can vary significantly between different ethnic and geographic populations. For instance, the "risk" alleles identified in one population may show different patterns or even protective effects in another. Because pseudoexfoliation syndrome is a complex, multifactorial condition influenced by both genetics and environmental factors, it is difficult to isolate the effect of a single SNP. Current evidence suggests that while LOXL1 is a major genetic contributor, it is part of a broader, complex landscape of risk factors that are still being mapped by the scientific community.
What You Can and Cannot Do With This Information
Genetic information regarding variants like rs3825943 is primarily used for research purposes to better understand the biological mechanisms of disease. It is important to understand that this information is not a diagnostic tool and cannot predict with certainty whether an individual will develop a condition. If you are concerned about your eye health or have a family history of glaucoma, the most effective step is to consult with an ophthalmologist or a qualified eye care professional. They can perform clinical examinations, such as measuring intraocular pressure and inspecting the structures of the eye, which are the standard methods for monitoring and managing eye health. Never use genetic data to make medical decisions or to self-diagnose. Always discuss any concerns about your vision or genetic risk factors with a healthcare provider who can provide personalized guidance based on your clinical history.
How common is this variant?
The frequency of the rs3825943 variant varies significantly across global populations, with minor allele frequencies typically ranging between 0.15 and 0.30 depending on the ancestral cohort studied.
Frequently asked questions
Is rs3825943 a diagnostic test for glaucoma?
No, rs3825943 is not a diagnostic test. It is a genetic marker associated with risk, but it cannot determine if you have or will develop glaucoma.
Should I be worried if I have the risk genotype?
Having a risk genotype does not mean you will develop a disease. Many people with risk variants never experience symptoms, and you should focus on regular eye exams.
How can I find out if I have this variant?
This variant is sometimes included in direct-to-consumer genetic testing panels. However, these results should be interpreted with caution and discussed with a medical professional.
Does this variant affect other parts of the body?
LOXL1 is involved in elastic fiber formation throughout the body, but the primary clinical focus of this variant is on ocular health and pseudoexfoliation syndrome.
Sources & further reading
Educational information only, last refreshed 9/27/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This LOXL1 missense variant (Gly153Asp) is closely linked to exfoliation glaucoma risk through altered extracellular matrix cross-linking in ocular tissues.
This coding missense variant (Arg141Leu) in LOXL1 is a major established risk allele for pseudoexfoliation syndrome and secondary open-angle glaucoma.
A missense variant in LOXL1 strongly associated with susceptibility to pseudoexfoliation syndrome and secondary glaucoma.
Missense variant in LOXL1 strongly associated with pseudoexfoliation syndrome and secondary glaucoma.
Common missense coding variant (Arg141Leu) in LOXL1 associated with exfoliation syndrome and secondary open-angle glaucoma.
A missense variant (p.Gly153Asp) in LOXL1 strongly associated with pseudoexfoliation syndrome and secondary open-angle glaucoma.