PKP2 rs1064796268: What Your Genotype Means
The rs1064796268 variant is a genetic change located within the PKP2 gene. It is associated with arrhythmogenic right ventricular cardiomyopathy (ARVC), a condition that affects the heart's structure and electrical system.
What each genotype means
Typical genetic profile
This genotype represents the most common sequence found in the general population for this location in the PKP2 gene. It is not associated with the increased risk of arrhythmogenic right ventricular cardiomyopathy (ARVC) linked to pathogenic variants in this gene. You should discuss any concerns regarding heart health or family history of cardiomyopathy with a qualified healthcare provider.
This is the most common genotype observed across all major global populations.
Potential risk variant carrier
Carrying one copy of this variant means you have a sequence change in the PKP2 gene that has been studied in the context of arrhythmogenic right ventricular cardiomyopathy (ARVC). Research indicates that PKP2 variants are often associated with this condition, though penetrance—the likelihood of developing symptoms—can be incomplete and variable. Please consult with a cardiologist or genetic counselor to interpret this result in the context of your personal and family medical history.
This genotype is rare in the general population, as most pathogenic PKP2 variants are found at very low frequencies in large cohort studies.
Rare variant carrier
This genotype indicates that both copies of the PKP2 gene carry this specific variant. While PKP2 variants are a known cause of arrhythmogenic right ventricular cardiomyopathy (ARVC), the clinical significance of being homozygous for a specific variant can be complex and depends on the specific nature of the change. You should seek professional medical guidance to understand how this may relate to your health, as clinical expression of these variants is highly variable.
This genotype is extremely rare and is not typically observed at significant frequencies in large population databases.
Understanding the PKP2 Gene
The PKP2 gene provides the instructions for creating a protein known as plakophilin 2. This protein is a critical component of desmosomes, which are specialized structures that act like 'glue' to hold heart muscle cells together. By maintaining the structural integrity of the myocardium, plakophilin 2 ensures that heart cells can communicate and contract in a coordinated fashion. Because the heart is under constant mechanical stress, the stability provided by desmosomal proteins is essential for long-term cardiac health. When the PKP2 gene is altered, the resulting protein may be missing, unstable, or unable to perform its role effectively. This disruption can weaken the connections between heart muscle cells, potentially leading to the replacement of healthy muscle tissue with fatty or fibrous tissue, a hallmark of certain inherited cardiac conditions.
What is the rs1064796268 Variant?
The rs1064796268 variant is a specific change in the DNA sequence of the PKP2 gene. In genomics, a variant like this represents a deviation from the most common sequence found in the human population. Because this variant is located within a gene responsible for critical structural proteins, researchers study it to determine if it interferes with the production or function of plakophilin 2. Genetic variants in PKP2 are frequently investigated in the context of arrhythmogenic right ventricular cardiomyopathy (ARVC), a disorder that can cause irregular heartbeats, or arrhythmias, and increase the risk of sudden cardiac events. While many variants in this gene are classified as pathogenic due to their clear link to disease, the clinical significance of any specific variant depends on the strength of the evidence gathered from clinical studies and family history reports.
Research and Clinical Associations
Scientific research has established that loss-of-function variants in the PKP2 gene are a primary genetic cause of ARVC. Studies published in journals such as Circulation: Cardiovascular Genetics have highlighted that mutations in desmosomal genes, particularly PKP2, are the most prevalent genetic findings in individuals diagnosed with this condition. The evidence for the pathogenicity of various PKP2 variants is often derived from observing their presence in affected families and conducting functional studies that show how the variant disrupts protein stability or cell-to-cell adhesion. However, it is important to note that ARVC is a complex condition with variable expressivity, meaning that even individuals with the same genetic variant may experience different symptoms or severity. The evidence strength for specific variants can range from moderate to strong, and clinicians often use these findings alongside physical exams and imaging to understand a patient's cardiac health.
Population Frequency and Interpretation
The frequency of specific PKP2 variants varies significantly across different global populations. Some variants are extremely rare, while others may appear more frequently in specific cohorts. For many rare variants associated with inherited cardiac conditions, the frequency in the general population is very low, which is often a factor considered by geneticists when assessing the likelihood that a variant is the cause of a disease. It is common for clinical databases like ClinVar to list these variants as they are identified in patients undergoing genetic testing. Because population databases like gnomAD provide a snapshot of genetic diversity, they help researchers distinguish between common benign variations and rare, potentially harmful ones. If you have received information about this variant, it is important to remember that genetic testing results should always be interpreted by a qualified healthcare professional who can place the findings in the context of your personal and family medical history.
Managing Genetic Information
If you have been identified as a carrier of a PKP2 variant, the most important step is to consult with a cardiologist or a genetic counselor. These professionals can help you understand what the result means for your health and whether any screening, such as an echocardiogram or an electrocardiogram (ECG), is appropriate for you or your family members. It is vital to understand that having a genetic variant does not guarantee that you will develop a heart condition; many factors, including lifestyle and other genetic modifiers, play a role in health outcomes. You should never make changes to your medical care or medication regimen based solely on a genetic report without speaking to your clinician. Genetic information is a tool for personalized health management, and your doctor is the best resource for determining how to use this information to support your long-term well-being.
How common is this variant?
This variant is noted as common in ClinVar, though specific frequency data across diverse ancestral populations may be limited or vary by database.
Frequently asked questions
What is the PKP2 gene?
The PKP2 gene provides instructions for making the plakophilin 2 protein. This protein is essential for the structure of desmosomes, which help heart muscle cells stick together and communicate.
Is a PKP2 variant a diagnosis of heart disease?
No, identifying a genetic variant is not a medical diagnosis. It is a piece of information that should be discussed with a cardiologist to determine if further heart screening is necessary.
What is ARVC?
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a condition where heart muscle is replaced by fat or fibrous tissue. This can lead to irregular heart rhythms and other cardiac issues.
Should I change my medication if I have this variant?
You should never change your medication or treatment plan based on genetic results without consulting your doctor or pharmacist. They are the only ones who can safely adjust your care.
Where can I find more information about my specific result?
You should speak with a genetic counselor or your primary care physician. They can help you interpret your report and explain what it means for your specific health situation.
Sources & further reading
Educational information only, last refreshed 10/10/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant in the PKP2 gene is associated with desmosomal proteins and is frequently observed in clinical variant databases.
This variant is a pathogenic mutation in the PKP2 gene associated with an increased risk of arrhythmogenic right ventricular dysplasia (ARVD) type 9.