CDKN2B-AS1 rs2383206: What Your Genotype Means
The rs2383206 variant is a genetic marker located in the CDKN2B-AS1 gene region on chromosome 9p21. It is statistically associated with an increased predisposition to coronary artery disease and related cardiovascular conditions.
What each genotype means
Baseline risk profile
This genotype is considered the baseline or normal state for this variant in many population studies. Research indicates that individuals with this genotype do not carry the specific risk-associated alleles linked to increased susceptibility for coronary artery disease and related vascular conditions at this locus.
This genotype is common, occurring in a significant portion of the population depending on ancestral background.
Moderately increased risk
Carrying one copy of the G allele is associated with a statistically higher predisposition to coronary artery disease and related atherosclerotic conditions compared to the baseline. This association has been observed across multiple ethnic groups, though the magnitude of risk can vary by ancestry and environmental factors.
This heterozygous genotype is frequently observed, with roughly one in four individuals of European ancestry estimated to carry risk-associated variants at this locus.
Elevated risk profile
Individuals with two copies of the G allele show a stronger statistical association with an increased risk for coronary artery disease and myocardial infarction compared to those with the A/A or A/G genotypes. While this variant is linked to disease susceptibility, it is only one factor among many, and lifestyle factors remain critical to cardiovascular health.
This homozygous genotype is common in many populations, with the G allele frequency reaching approximately 0.45 to 0.50 in European populations.
Understanding the rs2383206 Variant
The rs2383206 variant is a single nucleotide polymorphism (SNP) situated on chromosome 9p21. This specific region of the human genome has been a major focus of cardiovascular research since it was first identified as a genetic risk locus in 2007. Unlike variants that change the protein-coding sequence of a gene, rs2383206 is located in a non-coding regulatory region. This means it does not alter the structure of a protein directly but instead influences how genes in its vicinity are expressed. Because it sits within a complex regulatory landscape, researchers study this SNP to understand how subtle changes in DNA sequence can influence the biological pathways that maintain vascular health and regulate cell cycles.
The Role of CDKN2B-AS1
The variant rs2383206 is associated with the CDKN2B-AS1 gene, which produces a long non-coding RNA molecule often referred to as ANRIL. While it does not code for a protein, ANRIL plays a critical role in the long-range transcriptional regulation of nearby genes, specifically CDKN2A and CDKN2B. These genes are essential for controlling the cell cycle and cellular proliferation. Research suggests that variations in this region may alter the expression levels of these genes, potentially impacting the behavior of vascular smooth muscle cells and endothelial cells. By influencing these fundamental cellular processes, the CDKN2B-AS1 region is thought to contribute to the biological mechanisms that underlie the development of atherosclerotic plaques in the arteries.
Research and Evidence Strength
The association between the 9p21 locus and coronary artery disease (CAD) is one of the most replicated findings in human genetics. Large-scale genome-wide association studies (GWAS) have consistently linked variants in this region to an increased risk of CAD, myocardial infarction, and intracranial aneurysm. However, it is important to note that the evidence for rs2383206 specifically is considered to be part of a broader signal in the 9p21 region. While the statistical association is robust across many studies, the exact functional mechanism remains a subject of ongoing investigation. The effect size of such variants is typically modest, meaning that carrying a risk allele does not guarantee the development of disease, but rather represents one of many contributing factors in a complex, multifactorial health landscape.
What This Information Means for You
Genetic information regarding variants like rs2383206 is intended for educational purposes and should not be used for self-diagnosis or medical decision-making. Coronary artery disease is a complex condition influenced by a combination of genetic, environmental, and lifestyle factors, such as diet, exercise, and smoking status. Knowing your genotype for this variant does not provide a definitive prediction of your future health. If you are concerned about your cardiovascular risk, the most effective approach is to consult with a healthcare professional. They can evaluate your overall risk profile, including traditional clinical markers like blood pressure, cholesterol levels, and family history, to provide personalized guidance on maintaining heart health and managing potential risks.
How common is this variant?
The minor allele frequency for variants in the 9p21 region, including rs2383206, is approximately 0.45 to 0.50 in European populations, making these genotypes quite common.
Frequently asked questions
Does having the rs2383206 risk allele mean I will get heart disease?
No. Genetic variants like rs2383206 only indicate a statistical predisposition and are not diagnostic. Many people with the risk allele never develop heart disease, and many without it do.
Can I change my risk associated with this SNP?
While you cannot change your DNA, you can manage your overall cardiovascular risk through lifestyle choices. Maintaining a healthy diet, regular physical activity, and avoiding smoking are proven ways to support heart health regardless of your genetic background.
Should I get a genetic test for rs2383206?
Routine genetic testing for this specific SNP is not currently recommended for clinical practice. Cardiovascular risk assessment is best performed by a doctor using established clinical tools that account for multiple health factors.
Is this variant only found in certain ancestries?
The 9p21 risk locus has been studied extensively in European populations, but associations have been observed across various global ancestries. The frequency and impact can vary, so research findings may not be identical for every individual.
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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