TYRP1 rs1019212: What Your Genotype Means
The rs1019212 variant is a single-nucleotide polymorphism located within the TYRP1 gene. It is statistically associated with natural variations in human pigmentation, including differences in hair shade, skin tone, and iris color intensity.
What each genotype means
Typical pigmentation association
This genotype is associated with normal variation in human pigmentation traits, including skin, hair, and eye color. Research indicates that TYRP1 variants contribute to the spectrum of pigmentary phenotypes, though the specific impact of this genotype is considered limited and part of a complex polygenic architecture.
This genotype is common globally, reflecting the intermediate frequency of the A allele in many ancestral populations.
Typical pigmentation association
This heterozygous genotype is associated with normal variation in human pigmentation traits, including skin, hair, and eye color. As with other common variants in the TYRP1 gene, this genotype is one of many genetic factors that influence melanin production and distribution, with effects that are generally subtle and context-dependent.
This genotype is frequently observed across diverse populations, consistent with the intermediate minor allele frequency of this variant.
Typical pigmentation association
This genotype is associated with normal variation in human pigmentation traits, including skin, hair, and eye color. While TYRP1 is a known contributor to pigmentary diversity, this specific genotype represents a common variation that does not indicate a clinical condition or significant deviation from typical pigmentation patterns.
This genotype is common globally, appearing at frequencies consistent with the intermediate prevalence of the G allele in many ancestral groups.
Understanding the rs1019212 Variant
The rs1019212 variant is a specific genetic change, or single-nucleotide polymorphism (SNP), found within the TYRP1 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This particular variant is located in a region of the genome that influences how our bodies produce and distribute pigment. Because human physical appearance is a complex, polygenic trait—meaning it is influenced by many different genes working in concert—rs1019212 is just one of many markers that researchers study to understand the biological basis of human diversity. It is important to note that while this variant is linked to pigmentation, it does not act alone; rather, it contributes to a broader genetic landscape that shapes the unique characteristics of an individual's hair, skin, and eyes.
The Role of the TYRP1 Gene
The TYRP1 gene provides the instructions for creating the tyrosinase-related protein 1 enzyme. This enzyme is primarily active within melanocytes, which are specialized cells responsible for producing melanin. Melanin is the primary pigment that determines the color of our skin, hair, and eyes, and it also plays a role in the light-sensitive tissues of the retina. While the exact biochemical mechanisms of the TYRP1 protein are still being researched, it is known to be essential for the synthesis of eumelanin, the dark pigment that provides protection against ultraviolet radiation. Mutations that completely disrupt the function of this gene can lead to conditions like oculocutaneous albinism, which is characterized by significantly reduced pigmentation. In the context of common variants like rs1019212, the gene's activity is likely modulated rather than lost, contributing to the natural spectrum of pigmentation observed across global populations.
Research and Evidence Strength
Scientific research into rs1019212 has identified statistical associations between this variant and various pigmentation traits. Genome-wide association studies (GWAS) have frequently highlighted the TYRP1 gene as a key player in human appearance. However, the evidence strength for this specific SNP is considered limited. While researchers have observed correlations between specific alleles and variations in hair shade or skin tone, these associations can be highly dependent on an individual's ancestral background. Because pigmentation is influenced by a vast array of genetic and environmental factors, it is difficult to isolate the effect of a single SNP. Current findings should be viewed as part of a larger, ongoing effort to map the complex genetics of human traits. As with many variants in the GWAS Catalog, the findings are based on population-level statistics and do not provide a definitive prediction of an individual's physical appearance.
Interpreting Your Genetic Information
It is important to understand what you can and cannot do with information regarding the rs1019212 variant. This data is primarily for educational purposes and provides insight into the genetic factors that contribute to human diversity. You cannot use this information to diagnose any health condition or to predict your physical appearance with certainty. Because the association between this variant and pigmentation is complex and influenced by many other genes, it is not a reliable tool for personal identification or medical screening. If you have concerns about your skin health, such as changes in moles or sensitivity to sunlight, you should consult a dermatologist or a qualified healthcare professional. Genetic variants related to appearance are fascinating from a scientific perspective, but they do not replace the need for professional medical advice or standard health screenings.
How common is this variant?
The rs1019212 variant is found at an intermediate frequency globally, with a minor allele frequency typically ranging between 0.40 and 0.55 across diverse ancestral groups.
Frequently asked questions
Does rs1019212 determine my eye color?
No, rs1019212 does not determine your eye color on its own. Eye color is a polygenic trait influenced by many different genes, and this variant is only one of many factors that contribute to iris pigmentation.
Is this variant linked to skin cancer risk?
While some genes involved in pigmentation are studied in the context of skin cancer risk, rs1019212 is primarily associated with normal variations in appearance. You should always consult a dermatologist for concerns regarding skin health or cancer risk.
Can I use this SNP to predict my child's hair color?
No, you cannot use this SNP to predict a child's hair color. Pigmentation is highly complex and depends on the inheritance of many different genetic markers from both parents, as well as environmental factors.
Why is the evidence for this variant considered limited?
The evidence is considered limited because the statistical associations observed in studies are often small and can vary significantly between different ancestral populations. Additionally, the complex nature of pigmentation makes it difficult to isolate the specific impact of a single SNP.
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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Intronic variant within TYRP1 associated with shades of iris color and hair color variation.
This nonsense mutation (c.277C>T, p.Arg93Ter) in TYRP1 is the primary genetic cause of the distinct blonde hair phenotype observed in Melanesian populations.
3'-UTR variant in TYRP1 linked to natural variation in human hair color lightening and iris shade.