rs650662: Understanding Genetic Associations with Sun Exposure
The rs650662 variant is a single nucleotide polymorphism (SNP) located in an intergenic region of the human genome. It has been identified in research studies as being associated with tanning dependence and patterns of sun exposure during childhood.
What each genotype means
Typical sun exposure profile
This genotype is associated with baseline patterns of sun exposure and tanning behaviors in childhood. Research suggests that this variant may play a role in complex gene-environment interactions related to how individuals engage with sun exposure, though the effect size is considered moderate. This finding is based on statistical associations in population studies and does not predict individual behavior.
This is a common genotype found in European populations.
Typical sun exposure profile
This genotype is associated with baseline patterns of sun exposure and tanning behaviors in childhood. Research suggests that this variant may play a role in complex gene-environment interactions related to how individuals engage with sun exposure, though the effect size is considered moderate. This finding is based on statistical associations in population studies and does not predict individual behavior.
This is a common genotype found in European populations.
Typical sun exposure profile
This genotype is associated with baseline patterns of sun exposure and tanning behaviors in childhood. Research suggests that this variant may play a role in complex gene-environment interactions related to how individuals engage with sun exposure, though the effect size is considered moderate. This finding is based on statistical associations in population studies and does not predict individual behavior.
This is a common genotype found in European populations.
What is rs650662?
A single nucleotide polymorphism, or SNP, is a variation at a single position in a DNA sequence among individuals. The rs650662 variant is located on chromosome 6. Because it is situated in an intergenic region—meaning it lies in the DNA sequence between known protein-coding genes—it does not directly code for a protein. Instead, researchers study such variants to understand how they might influence the regulation of nearby genes or serve as markers for other biological processes. In the context of genomics, rs650662 is categorized as a trait-associated variant, meaning its presence is statistically correlated with specific observable characteristics or behaviors rather than a direct cause of a medical condition.
Research and Associations
Scientific research, including genome-wide association studies (GWAS), has explored the link between genetic markers and skin-related behaviors. Specifically, rs650662 has been investigated for its association with tanning dependence and sun exposure habits during childhood. The evidence for this association is considered moderate, reflecting the complex nature of human behavior and environmental interactions. Tanning and sun exposure are influenced by a combination of genetic predisposition, cultural factors, and personal choices. Because these traits are polygenic—meaning they are influenced by many different genetic variants—rs650662 represents only a small piece of a much larger puzzle. Current research highlights that while statistical correlations exist, they do not imply a direct biological mechanism or a deterministic outcome for any individual.
Interpreting Your Information
It is important to understand that genetic associations like those found for rs650662 are based on population-level data and do not provide a diagnostic tool for individuals. You cannot use this information to predict your personal tanning behavior or your risk for skin-related health issues. Genetic variants are just one factor among many, including lifestyle, environment, and other genetic markers, that shape human traits. If you have concerns about your skin health, sun sensitivity, or the risks associated with UV exposure, the most reliable course of action is to consult with a dermatologist or a qualified healthcare professional. They can provide personalized advice based on your medical history and clinical examination, which are far more informative than any single genetic variant.
How common is this variant?
The rs650662 variant is commonly found in European populations. Frequency data for specific genotypes can be explored through large-scale genomic databases like gnomAD.
Frequently asked questions
Is rs650662 a cause of skin cancer?
No, rs650662 is not a known cause of skin cancer. It is a genetic marker associated with tanning behaviors, which are separate from the direct genetic drivers of skin malignancy.
Can I use this SNP to change my sun exposure habits?
Genetic information regarding this SNP should not dictate your health choices. You should always follow established medical guidelines for sun safety, such as using sunscreen and limiting peak sun exposure, regardless of your genotype.
Where can I find more information on this variant?
You can look up rs650662 in public databases such as the NCBI dbSNP or the GWAS Catalog. These resources provide technical details and links to the original research studies.
Why is this variant called intergenic?
The term intergenic means the variant is located in the DNA sequence between genes. It does not sit within a gene that provides instructions for making a protein.
Sources & further reading
Educational information only, last refreshed 9/17/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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