CETP rs1532423: Understanding Your Genetic Variant
The rs1532423 variant is a well-documented genetic marker located within the CETP gene. It is primarily associated with the regulation of cholesteryl ester transfer protein activity and the modulation of circulating high-density lipoprotein (HDL) cholesterol levels.
What each genotype means
Typical CETP activity
This genotype is associated with standard levels of cholesteryl ester transfer protein activity. Research indicates that individuals with this profile generally exhibit baseline lipid metabolism patterns compared to those carrying the T allele.
Carried by approximately 36% of individuals in European populations.
Intermediate CETP activity
This genotype represents a heterozygous state that may influence the regulation of cholesteryl ester transfer protein. Statistical associations suggest this profile often correlates with lipid levels intermediate to those observed in homozygous carriers.
Carried by approximately 48% of individuals in European populations.
Modified CETP activity
This genotype is associated with variations in the regulation of the CETP gene, which plays a role in lipid metabolism. While this variant is linked to differences in circulating HDL cholesterol levels in some studies, the clinical significance for individual cardiovascular risk remains a subject of ongoing research.
Carried by approximately 16% of individuals in European populations.
What is rs1532423?
The rs1532423 variant is a single nucleotide polymorphism (SNP) located within the CETP gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is classified as an intronic polymorphism, meaning it resides in a non-coding region of the gene. While it does not directly alter the protein's amino acid sequence, such regulatory variants often influence how much of a protein is produced or when it is expressed in the body. Because it is located in a region that modulates gene activity, researchers study it to understand how subtle differences in our genetic code can lead to measurable differences in physiological traits, such as the concentration of various lipids circulating in the bloodstream.
The Role of the CETP Gene
The CETP gene provides instructions for creating the cholesteryl ester transfer protein. This protein plays a critical role in lipid metabolism by facilitating the transfer of cholesteryl esters and triglycerides between different types of lipoprotein particles in the blood. Specifically, it moves cholesterol from high-density lipoprotein (HDL) particles to very-low-density lipoprotein (VLDL) and low-density lipoprotein (LDL) particles. By regulating this exchange, CETP is a key player in reverse cholesterol transport, a process that helps remove excess cholesterol from peripheral tissues and return it to the liver for processing. Because of its central role in lipid homeostasis, variations in the CETP gene are frequently investigated for their potential impact on cardiovascular health and the balance of cholesterol levels in the blood.
Research and Associations
Scientific research, including studies published in journals like Circulation: Cardiovascular Genetics, has identified associations between variants in the CETP gene region and lipid profiles. The rs1532423 variant is recognized as a regulatory polymorphism that influences the activity of the CETP protein. Some studies have suggested that certain genetic variations in this region correlate with differences in HDL cholesterol levels. However, it is important to note that the evidence strength for this specific SNP is considered limited. While large-scale genome-wide association studies (GWAS) often highlight the CETP locus as a significant contributor to lipid trait variation, the functional impact of any single SNP can be complex and influenced by other genetic and environmental factors. Consequently, while the association is well-established in a statistical sense, it should not be viewed as a definitive predictor of an individual's health status.
Population Frequency
Genetic variants are distributed differently across global populations, and rs1532423 is no exception. Current data indicates that the minor allele frequency for this variant is approximately 0.40 in European populations. This means that the variant is relatively common, appearing in a significant portion of the population. Because frequency can vary substantially between different ancestral groups, researchers often emphasize the importance of considering population-specific data when interpreting genetic findings. Understanding these frequencies helps scientists determine whether a variant is rare or common, which in turn informs how they design studies to assess the variant's potential impact on human traits. If you are interested in how this variant relates to your own ancestry, consulting with a genetic counselor can provide context on how these frequencies are calculated and what they mean in a broader scientific framework.
What You Can Do With This Information
Information about genetic variants like rs1532423 is primarily intended for educational purposes and to foster a better understanding of human biology. It is crucial to remember that a single SNP is rarely the sole determinant of a complex trait like cholesterol levels, which are influenced by a combination of genetics, diet, lifestyle, and other environmental factors. You cannot use this information to diagnose a medical condition or to make decisions about medication. If you have concerns about your cholesterol levels or cardiovascular health, the most appropriate step is to discuss your results with a qualified healthcare provider. They can interpret your lipid profile in the context of your overall health history and provide personalized guidance. Never change or stop any prescribed medication based on genetic information without first consulting your clinician or pharmacist.
How common is this variant?
The minor allele frequency for rs1532423 is approximately 0.40 in European populations, making it a common variant.
Frequently asked questions
Does having the rs1532423 variant mean I have high cholesterol?
No, having a specific genotype for rs1532423 does not mean you have high cholesterol. Cholesterol levels are influenced by many factors, including diet, exercise, and your overall genetic makeup, not just a single SNP.
Can I use this SNP to predict my risk of heart disease?
While some variants in the CETP gene are studied in the context of cardiovascular health, rs1532423 is not a diagnostic tool. You should not use this information to predict your personal risk of heart disease.
Should I change my diet based on my rs1532423 genotype?
No, you should not change your diet based on this genetic information. Dietary decisions should be made in consultation with a healthcare provider or a registered dietitian based on your actual blood lipid levels and overall health needs.
Where can I find more information about the CETP gene?
You can find reliable information about the CETP gene through resources like MedlinePlus Genetics, the NCBI Gene database, and peer-reviewed research articles on PubMed.
Sources & further reading
Educational information only, last refreshed 10/15/2026. 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.
Known as the CETP TaqIB polymorphism, this intron variant is linked to reduced CETP activity, higher circulating HDL-C, and altered cardiovascular risk profile.
The I405V coding variant in cholesteryl ester transfer protein correlates with diminished CETP mass, elevated HDL cholesterol levels, and potential longevity benefits.