CYP1B1 rs2617266: Understanding This Genetic Variant
The rs2617266 variant is a common genetic change located within the CYP1B1 gene. It is studied for its potential role in how the body processes certain environmental substances and xenobiotics.
What each genotype means
Common genotype
This is the most frequently observed genotype for this variant in the general population. Current research does not indicate that this specific genotype confers a significant functional change in the CYP1B1 enzyme compared to the common baseline. As with all genetic findings, this information should be viewed as a general observation rather than a medical diagnosis.
This is the most common genotype found across most global populations.
Common heterozygous genotype
This genotype represents a common variation where one copy of the gene carries the C allele and the other carries the T allele. There is currently no strong evidence suggesting that this specific heterozygous state significantly alters the metabolic function of the CYP1B1 protein. Please consult with a healthcare professional if you have specific concerns regarding your metabolic health or environmental exposures.
This genotype is frequently observed in diverse populations worldwide.
Common variant genotype
This genotype indicates that both copies of the gene carry the T allele. While this variant is located in the CYP1B1 gene, which is involved in metabolic pathways, there is no established clinical evidence that this specific genotype leads to significant health outcomes or altered enzyme activity. This finding should not be used to guide medical decisions or clinical care.
This genotype is found at varying frequencies across different ancestral groups but remains a common variation.
What is rs2617266?
The rs2617266 variant is a single-nucleotide polymorphism (SNP) located within the CYP1B1 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is found on chromosome 2. Because it is a common variant, it is frequently included in genetic research studies that look at how variations across the human genome might influence biological traits or responses to external factors. Researchers track these specific locations to understand how subtle differences in our genetic code contribute to the diversity of human physiological responses.
The Role of the CYP1B1 Gene
The CYP1B1 gene provides instructions for making an enzyme that belongs to the cytochrome P450 family. These enzymes are primarily responsible for metabolizing various compounds, including endogenous substances like steroids and exogenous substances known as xenobiotics, which include environmental toxins and certain medications. Because of its role in metabolism, the CYP1B1 enzyme is essential for maintaining cellular balance. While the gene is most famously associated with primary congenital glaucoma when significant mutations occur, its broader function involves the breakdown of molecules that the body encounters in daily life. Understanding how variants like rs2617266 might alter this enzyme's efficiency is a subject of ongoing scientific investigation.
Research and Associations
Scientific research has investigated rs2617266 in the context of metabolic pathways and responses to environmental stressors. Evidence regarding this specific variant is considered moderate, meaning that while associations have been observed in various studies, they are not always consistent across different populations or study designs. Some research explores whether this variant influences how individuals process xenobiotics, which are chemical substances foreign to the body. It is important to note that genetic associations are statistical in nature and do not imply a direct cause-and-effect relationship for any individual. Because the evidence is mixed and often depends on the specific population studied, scientists continue to refine their understanding of how this variant interacts with other genetic and environmental factors.
What You Can Do With This Information
Learning about your genetic variants can be an educational experience, but it is important to maintain a balanced perspective. Genetic information like rs2617266 provides a snapshot of your biological blueprint, but it does not determine your health outcomes on its own. You cannot use this information to diagnose yourself with any condition or to predict a specific response to environmental factors. If you are concerned about how your genetics might influence your health or your response to specific medications, the most important step is to consult with a qualified healthcare provider or a pharmacist. They can help you interpret your health history in the context of your genetics and provide guidance that is tailored to your specific medical needs.
How common is this variant?
The rs2617266 variant is considered common across many global populations, meaning that the different genotypes are found at significant frequencies in diverse ancestral groups.
Frequently asked questions
Is rs2617266 a disease-causing mutation?
No, rs2617266 is a common genetic variant, not a disease-causing mutation. It is studied for its potential influence on metabolic traits rather than as a direct cause of a specific medical condition.
Can I use this variant to predict my health?
No, you cannot use this variant to predict your health. Genetic variants like this are only one small piece of a very complex puzzle that includes your environment, lifestyle, and other genetic factors.
Should I change my medication based on this result?
You should never change your medication based on genetic information without consulting your doctor. Always speak with your clinician or pharmacist before making any changes to your prescribed treatments.
Where can I find more information about CYP1B1?
You can find reliable information about the CYP1B1 gene through resources like MedlinePlus Genetics or the NCBI Gene database. These sites provide comprehensive summaries of gene functions and their roles in human health.
Sources & further reading
Educational information only, last refreshed 9/26/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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A missense alteration in cytochrome P450 1B1 that contributes to structural ocular angle development and congenital glaucoma risk.
Associated with functional differences in 4-hydroxylation of estrogens and variation in steroid hormone metabolite ratios.
A well-characterized loss-of-function missense variant causing primary congenital glaucoma type 3A.
A classic founder missense mutation in CYP1B1 responsible for early-onset recessive infantile and juvenile glaucoma.
Variant (Asn453Ser) associated with altered cytochrome P450 1B1 enzymatic activity, estrogen metabolite profiles, and physical pigmentation variations.
A recurrent pathogenic missense substitution (p.Arg368His) in CYP1B1 impairing ocular development and predisposing to primary congenital and juvenile glaucoma.