CETP rs247616: Understanding Your Genetic Variant
The rs247616 variant is a well-studied genetic marker located in the regulatory region of the CETP gene. It is frequently associated with variations in high-density lipoprotein (HDL) cholesterol levels and has been investigated for its potential role in coronary artery disease risk profiles.
What each genotype means
Typical HDL cholesterol levels
You carry two copies of the common C allele for this CETP regulatory variant. In population studies, this baseline genotype is associated with standard CETP expression, typical high-density lipoprotein cholesterol (HDL-C) concentrations, and average coronary artery disease risk relative to this single marker. Because cardiovascular disease is influenced by many genes and lifestyle factors, your overall lipid profile and clinical risk are best evaluated through comprehensive medical screening.
Carried by approximately 35% to 40% of individuals of European ancestry, with varying frequencies across other global populations.
Modestly higher HDL cholesterol
You carry one copy of the A allele linked to reduced CETP expression. Research indicates that heterozygous carriers tend to have modestly higher circulating HDL cholesterol levels compared to non-carriers, along with small statistical differences in coronary disease risk profiles. However, current evidence indicates that genetically elevated HDL-C does not necessarily provide proportional cardiovascular protection, and results may vary across ancestries.
Carried by roughly 45% to 50% of individuals of European ancestry, representing the most common genotype in several cohorts.
Higher HDL cholesterol levels
You carry two copies of the A allele, which has been shown in functional and association studies to correlate with reduced CETP hepatic expression and significantly higher HDL cholesterol concentrations. While this genotype is statistically linked to elevated HDL-C and altered lipid exchange, large-scale genetic studies show limited and mixed evidence regarding whether this directly translates to reduced coronary artery disease risk. If you are taking lipid-lowering medications such as statins, consult your healthcare provider or pharmacist regarding overall management of your lipid panel.
Carried by approximately 10% to 16% of individuals of European ancestry; it occurs at lower frequencies in East Asian populations.
What is rs247616 and Where is it Located?
The rs247616 variant is a single-nucleotide polymorphism (SNP) situated in the upstream regulatory region of the CETP gene on chromosome 16. This specific location is critical because it functions as a promoter or enhancer area, which controls how much of the CETP protein is produced by the body. Because it sits within a large haplotype block—a group of genetic variations that are often inherited together—rs247616 is frequently studied alongside other nearby variants. Research indicates that this region is highly polymorphic, meaning there is significant natural variation among individuals. By influencing the transcription of the gene, rs247616 acts as a genetic switch that can modulate the expression levels of the CETP protein in liver tissues. Understanding its position helps researchers determine how genetic architecture influences metabolic processes, specifically those related to lipid transport in the bloodstream.
The Role of the CETP Gene
The CETP gene encodes the cholesteryl ester transfer protein, a glycoprotein that plays a central role in lipid metabolism. Its primary function is to facilitate the exchange of cholesteryl esters from high-density lipoprotein (HDL) particles for triglycerides found in low-density lipoprotein (LDL) and very-low-density lipoprotein (VLDL) particles. This process effectively lowers the concentration of HDL cholesterol, often referred to as 'good' cholesterol, while increasing the triglyceride content of other lipoproteins. Because HDL is involved in reverse cholesterol transport—the process of moving cholesterol from tissues back to the liver for excretion—the activity of the CETP protein is a key factor in maintaining healthy lipid profiles. Variations in the CETP gene, such as rs247616, can alter the amount of this protein produced, thereby shifting the balance of cholesterol transport and potentially impacting cardiovascular health markers.
Research Associations and Evidence Strength
Scientific research has consistently linked rs247616 to changes in HDL cholesterol levels, with the variant influencing the expression of CETP mRNA in the liver. While the association with HDL levels is robust and replicated across large cohorts, the link to coronary artery disease (CAD) remains complex and sometimes controversial. Some studies, such as those conducted in specific populations like the Polish cohort, have observed that certain genotypes may correlate with an increased risk of CAD. However, other large-scale Mendelian randomization studies have produced mixed results, sometimes showing only statistically insignificant effects on disease risk. This suggests that while rs247616 is a reliable marker for lipid levels, its direct role in causing heart disease is likely influenced by other genetic and environmental factors. Consequently, the evidence strength for this variant as a standalone predictor of clinical disease is considered limited.
What You Can and Cannot Do With This Information
Genetic information regarding rs247616 provides insight into your biological predisposition for lipid metabolism, but it is not a diagnostic tool. You cannot use this information to determine your personal risk of heart disease or to make decisions about starting or stopping medications. If you are concerned about your cholesterol levels or cardiovascular health, the most effective approach is to consult with a healthcare professional who can evaluate your full lipid panel, family history, and lifestyle factors. Genetic variants are only one piece of a much larger puzzle; they do not dictate your health outcomes. Always discuss any questions about your genetic results or potential medication adjustments with your doctor or a qualified pharmacist. They can provide context based on clinical guidelines and help you develop a personalized health strategy that considers all relevant medical data.
How common is this variant?
The rs247616 variant is common, with a minor allele frequency (MAF) of approximately 0.40 in European populations. It is widely distributed across various ancestral groups, making it a frequently studied marker in lipid-related genetic research.
Frequently asked questions
Does having the rs247616 variant mean I will have heart disease?
No, having a specific genotype for rs247616 does not mean you will develop heart disease. Genetic variants only indicate a potential predisposition, and many other factors like diet, exercise, and overall health play a much larger role in your actual risk.
Can I change my CETP expression through diet?
While certain lifestyle choices can influence your cholesterol levels, there is no evidence that you can directly 'turn off' or 'turn on' the expression of the CETP gene through diet alone. You should focus on heart-healthy habits recommended by your doctor to manage your lipid profile.
Should I get tested for this SNP?
Routine testing for the rs247616 variant is not currently recommended for the general public. Clinical decisions regarding heart health are based on blood tests, such as cholesterol panels, rather than individual genetic markers.
Is rs247616 the same as the Taq1B polymorphism?
No, rs247616 and the Taq1B polymorphism (rs708272) are different genetic variants. However, they are both located within the CETP gene and are sometimes studied together because they can be in linkage disequilibrium, meaning they are often inherited together.
Sources & further reading
Educational information only, last refreshed 10/19/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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CETP promoter variant associated with preserved cognitive function, elevated HDL levels, and exceptional longevity across European cohorts.
The B2 (A) allele of the TaqIB polymorphism is associated with lower CETP activity and significantly higher HDL-cholesterol levels.
The missense variant p.Ile422Val (I405V) in CETP is associated with reduced cholesteryl ester transfer protein activity, leading to elevated HDL-C levels and modest protection against coronary artery disease.
The I405V variant in CETP is associated with altered HDL cholesterol levels and cardiovascular risk profiles.
Well-established regulatory intronic polymorphism modulating cholesteryl ester transfer protein activity and circulating HDL cholesterol levels.
Known as the CETP TaqIB polymorphism, this intron variant is linked to reduced CETP activity, higher circulating HDL-C, and altered cardiovascular risk profile.