STAT4 rs7574865: Understanding Genetic Links to Autoimmunity
The rs7574865 variant is a single nucleotide polymorphism located within the STAT4 gene. Research has consistently associated this variant with an increased susceptibility to certain autoimmune diseases, including systemic lupus erythematosus and rheumatoid arthritis.
What each genotype means
Typical Autoimmune Risk Profile
You carry two copies of the common G allele, which is not associated with elevated genetic susceptibility to systemic lupus erythematosus or rheumatoid arthritis at this specific locus. While carrying this genotype reflects a standard baseline risk for these autoimmune conditions, overall risk is complex and influenced by numerous other genes and environmental factors.
Observed in approximately 50% to 65% of individuals of European and East Asian ancestry, and in more than 85% of individuals of African ancestry.
Mildly Increased Autoimmune Predisposition
You carry one copy of the A risk allele, which has been associated in population studies with a modest increase in relative risk for autoimmune conditions like systemic lupus erythematosus and rheumatoid arthritis. This statistical association represents only a mild elevation in risk and is not diagnostic of any autoimmune disorder.
Found in roughly 30% to 45% of individuals of European and East Asian descent, and in about 10% to 15% of individuals of African descent.
Moderately Increased Autoimmune Predisposition
You carry two copies of the A risk allele, a genotype linked in autoimmune association studies to an incrementally higher relative susceptibility to systemic lupus erythematosus and rheumatoid arthritis compared to carrying one or no copies. However, this finding indicates a probabilistic predisposition rather than a clinical diagnosis, as most people with this genotype never develop an autoimmune disease.
Present in roughly 4% to 9% of individuals of European and East Asian descent, and in less than 2% of individuals of African descent.
What is the rs7574865 Variant?
The rs7574865 variant is a single nucleotide polymorphism (SNP) situated within the third intron of the STAT4 gene. In genetics, an intron is a non-coding region of a gene that is removed during the process of creating a protein. While introns do not provide the direct instructions for building a protein, they often contain regulatory elements that control when, where, and how much of a protein is produced. Because rs7574865 is located in this regulatory space, researchers hypothesize that it may influence the expression levels of the STAT4 protein. This specific SNP is frequently studied in the context of immune system function, as it serves as a marker for a haplotype—a group of genetic variations that are inherited together—that has been linked to various inflammatory and autoimmune conditions across diverse human populations.
The Role of the STAT4 Gene
The STAT4 gene encodes a protein known as Signal Transducer and Activator of Transcription 4. This protein functions as a transcription factor, which acts like a molecular switch to turn specific genes on or off within a cell. STAT4 is primarily involved in the signaling pathways of cytokines, such as interleukin-12 and type 1 interferons. These signals are critical for the development and activation of T-cells, specifically those involved in the body's inflammatory response. By regulating the production of proteins like interferon-gamma, STAT4 helps coordinate the immune system's defense against pathogens. When this signaling pathway is overactive or dysregulated, it can contribute to chronic inflammation. Because of its central role in immune regulation, variations in the STAT4 gene are of significant interest to scientists studying why some individuals are more prone to autoimmune disorders than others.
Research and Disease Associations
Extensive research, including large-scale meta-analyses, has identified a significant association between the minor T allele of rs7574865 and an increased risk for systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Studies have shown that individuals carrying the T allele often exhibit higher levels of STAT4 mRNA and protein in certain immune cells when stimulated. While the evidence for this association is strong and has been replicated across multiple cohorts of European and Asian ancestry, the exact biological mechanism remains a subject of ongoing investigation. It is important to note that while this variant is a recognized risk factor, it is not a diagnostic tool. Autoimmune diseases are complex and multifactorial, meaning they arise from a combination of many genetic, environmental, and lifestyle factors. Having this variant does not guarantee the development of a disease, and many people without the variant also develop these conditions.
Population Frequency
The frequency of the rs7574865 variant varies by ancestry. In many studies, the minor T allele is observed at a frequency of approximately 22% in populations of European origin, while it is often found at higher frequencies, around 30% to 32%, in Asian populations. These differences in allele frequency are common in human genetics and reflect the historical migration and evolutionary history of different groups. Despite these variations in frequency, the statistical association between the variant and increased disease risk has been observed consistently across these different ethnic backgrounds, suggesting that the underlying biological impact of the variant is not limited to a single population.
What This Information Means for You
Understanding your genetic profile regarding rs7574865 can be an educational experience, but it is not a substitute for professional medical advice. Because autoimmune diseases are complex, a single genetic variant provides only a small piece of a much larger puzzle. You cannot use this information to diagnose yourself or predict your future health outcomes. If you have concerns about your risk for autoimmune conditions, or if you are experiencing symptoms such as joint pain, fatigue, or skin rashes, it is essential to consult with a healthcare provider or a rheumatologist. They can evaluate your personal and family medical history, perform necessary clinical tests, and provide guidance tailored to your specific health needs. Never make changes to your health management or medication based on genetic data without first discussing them with a qualified clinician.
How common is this variant?
The minor T allele of rs7574865 has a frequency of approximately 22% in European populations and ranges between 30% and 32% in Asian populations.
Frequently asked questions
Does having the rs7574865 T allele mean I will get lupus?
No. Having the T allele is associated with an increased statistical risk, but it does not cause the disease. Many people with the T allele never develop lupus, and many people with lupus do not carry this specific variant.
Is rs7574865 a diagnostic test for rheumatoid arthritis?
No, this variant is not used for clinical diagnosis. Rheumatoid arthritis is diagnosed by doctors based on clinical symptoms, physical exams, and blood tests, not by genetic testing of a single SNP.
Can I change my risk associated with this variant?
Genetic variants are inherited and cannot be changed. However, you can focus on overall health and wellness, and you should discuss any concerns about autoimmune symptoms with your doctor.
Why is this variant called an 'intronic' variant?
It is called intronic because it is located within an intron, which is a non-coding section of the STAT4 gene. These regions often play a role in regulating how genes are expressed.
Sources & further reading
Educational information only, last refreshed 10/17/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant is associated with altered immune function and risk for systemic lupus erythematosus.
This SNP is associated with the regulation of inflammatory pathways and autoimmune risk.
This variant is associated with susceptibility to systemic lupus erythematosus and rheumatoid arthritis.
This genetic marker is associated with the modulation of immune response and susceptibility to inflammatory diseases.
This SNP is involved in the genetic predisposition to various autoimmune disorders.
This marker is linked to the genetic architecture of autoimmune disease susceptibility.