What you carry at this position in your DNA and what research says about it.
Inflammation and Joint Risk: 8/10 evidence, 59 publications.
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Sample genotype (not yours): A/A
Lower Risk of Chronic Inflammatory Conditions
Baseline levels of interleukin 6 are typically lower, helping to protect against chronic inflammation. This translates to a reduced risk of joint degradation, asthma, and cardiovascular issues.
What this genotype means: Lower baseline systemic inflammation; Reduced risk of joint wear and tear; Lower susceptibility to asthma.
Sample genotype (not yours): A/G
Increased Risk of Inflammatory and Joint Issues
Carrying one copy of the G allele is linked to elevated interleukin 6 levels. This increases susceptibility to joint wear, asthma, and cardiovascular inflammation.
What this genotype means: Slightly elevated baseline inflammation; Increased risk of joint and disc degeneration; Higher susceptibility to asthma.
Sample genotype (not yours): G/G
Highest Risk of Inflammatory and Joint Issues
Two copies of the G allele promote higher baseline interleukin 6 levels. This significantly increases the risk of asthma, joint degeneration, and cardiovascular inflammation.
What this genotype means: Elevated baseline systemic inflammation; Highest risk of osteoarthritis and disc wear; Increased susceptibility to asthma and vascular calcification.
Gene function and biological role
Gene Function: The IL6 gene encodes interleukin 6, a versatile cytokine that plays a central role in both acute and chronic inflammatory responses [1]. It acts as a signaling molecule that coordinates the immune system reaction to injuries, infections, and physiological stress [2]. While temporary increases in its levels help clear pathogens, sustained overproduction of this cytokine can lead to chronic tissue damage [1]. This ongoing inflammatory state is a major driver of joint degradation, airway remodeling, and blood vessel disease [3]. Consequently, genetic variations that alter how this gene is expressed can influence susceptibility to a wide range of inflammatory and autoimmune conditions [4].
Variant Impact: Located in the promoter region of the IL6 gene, rs1800797 is a single-nucleotide change that directly influences how the gene is transcribed and secreted [5]. This genetic variation alters the binding efficiency of transcription factors, thereby modulating the baseline production of interleukin 6 [5]. The presence of the G allele is frequently associated with heightened inflammatory responses and an increased risk of developing chronic conditions like asthma [6]. Conversely, the A allele is linked to lower baseline levels of inflammation, offering a protective effect against several degenerative disorders [7]. Because of its regulatory position, this variant is often inherited alongside other key promoter changes that collectively shape immune sensitivity [8].
Key Insight: This variant sits in the promoter region of the IL6 gene, acting as a molecular volume dial that influences how much inflammatory cytokine the body produces in response to daily stress.
Location: IL6. Chromosome 7 · 7p15.3 · 22.7 Mb
Estimated prevalence by population
Global 10.4%; European 17.0%; African 0.5%; East Asian < 0.1%; South Asian 2.2%; Americas 4.3%; Ashkenazi 6.6%; Finnish 26.8%; Middle Eastern 3.1%; Amish 12.0%.
Estimated AA genotype frequency.
Global 34.5%; European 48.5%; African 13.1%; East Asian 0.3%; South Asian 25.5%; Americas 33.0%; Ashkenazi 38.3%; Finnish 49.9%; Middle Eastern 29.1%; Amish 45.3%.
Estimated AG genotype frequency.
Global 55.1%; European 34.5%; African 86.4%; East Asian 99.7%; South Asian 72.3%; Americas 62.7%; Ashkenazi 55.1%; Finnish 23.3%; Middle Eastern 67.7%; Amish 42.7%.
Estimated GG genotype frequency.
Showing effects for A/A genotype
Organ Systems
Respiratory Health
Asthma. Evidence: 8/10. Source: PMID 31959851. Lower Risk.
Bone, Joint & Connective Tissue Health
Osteoarthritis. Evidence: 3/10. Source: PMID 20175976. Lower Risk.
Spinal Disc Degeneration. Evidence: 3/10. Source: PMID 22107760. Lower Risk.
Cardiovascular & Metabolic
Heart Disease
Heart Disease. Evidence: 4/10. Source: PMID 28739396. Lower Risk.
Pharmacogenomics
Antimicrobial & Antiviral Response
Hepatitis C Treatment Response. Evidence: 5/10. Source: PMID 19387461. Typical Response.
Pain Medication Response
Opioid Sensitivity. Evidence: 5/10. Source: PMID 35335997. Higher Sensitivity.
Showing effects for A/G genotype
Asthma. Evidence: 8/10. Source: PMID 31959851. Increased Risk.
Osteoarthritis. Evidence: 3/10. Source: PMID 20175976. Increased Risk.
Spinal Disc Degeneration. Evidence: 3/10. Source: PMID 22107760. Increased Risk.
Heart Disease. Evidence: 4/10. Source: PMID 28739396. Increased Risk.
Hepatitis C Treatment Response. Evidence: 5/10. Source: PMID 19387461. Poorer Response.
Showing effects for G/G genotype
Asthma. Evidence: 8/10. Source: PMID 31959851. Highest Risk.
Osteoarthritis. Evidence: 3/10. Source: PMID 20175976. Highest Risk.
Spinal Disc Degeneration. Evidence: 3/10. Source: PMID 22107760. Highest Risk.
Heart Disease. Evidence: 4/10. Source: PMID 28739396. Highest Risk.
Opioid Sensitivity. Evidence: 5/10. Source: PMID 35335997. Typical Sensitivity.
What this genotype means for the people who carry it
Sample genotype: AA (Homozygous)
Inheriting two copies of the protective A allele is associated with a more balanced immune response and lower baseline levels of interleukin 6 [1]. This reduced inflammatory profile provides significant protection against joint-related issues, including osteoarthritis and lumbar disc degeneration [2]. Airway sensitivity is also minimized, resulting in a lower likelihood of developing asthma or experiencing severe respiratory symptoms [3]. Furthermore, cardiovascular health is favored, with studies showing a decreased risk of coronary artery disease [4]. In therapeutic settings, this genotype is linked to a more favorable response to certain antiviral treatments [1]. Additionally, pediatric pain studies suggest that those with this genetic profile may be more sensitive to opioid medications for pain management [5].
Lower baseline systemic inflammation; Reduced risk of joint wear and tear; Lower susceptibility to asthma.
Sample genotype: AG (Heterozygous)
Carrying a single copy of the G allele elevates the baseline production of interleukin 6, pushing the immune system toward a more active inflammatory state [1]. This heightened reactivity is associated with an increased susceptibility to joint conditions, such as osteoarthritis and intervertebral disc degeneration [2]. Airway tissues are also more prone to inflammation, which raises the risk of developing asthma [3]. Cardiovascular health may be affected, as chronic inflammation contributes to the progression of coronary artery disease [4]. When undergoing treatment for chronic viral infections, individuals with this genotype have shown a poorer response to peginterferon therapies [1]. Pain management patterns also differ, with some studies indicating a lower sensitivity to standard opioid doses compared to non-carriers [5].
Slightly elevated baseline inflammation; Increased risk of joint and disc degeneration; Higher susceptibility to asthma.
Sample genotype: GG (Homozygous)
Inheriting two copies of the G allele leads to the highest baseline expression and secretion of interleukin 6, creating a persistent inflammatory environment [1]. This chronic state of low-grade inflammation accelerates the wear and tear of joint cartilage, significantly increasing the risk of osteoarthritis [2]. It also predisposes the intervertebral discs to premature degeneration, which can lead to chronic back pain [3]. The respiratory system is highly sensitive in this genetic group, showing a well-documented increase in asthma susceptibility [4]. Blood vessels are also more vulnerable to inflammatory damage, elevating the risk of coronary artery disease [5]. From a pharmacological perspective, this genotype is associated with a reduced response rate to peginterferon-alfa therapies [1]. Managing lifestyle factors like diet and exercise is particularly beneficial for this group to help mitigate systemic inflammation.
Elevated baseline systemic inflammation; Highest risk of osteoarthritis and disc wear; Increased susceptibility to asthma and vascular calcification.
Variants with shared genetic architecture
rs1800795 · IL6 Gene · Chr 7 · Inflammation and Diabetes Risk
rs2069837 · IL6 Gene · Chr 7 · Inflammation and Longevity
rs1800796 · IL6 Gene · Chr 7 · Inflammatory Response
Transancestral mapping and genetic load in systemic lupus erythematosus.
Interleukin-6 haplotypes and the response to therapy of chronic hepatitis C virus infection.
Interleukin 6 SNP rs1800797 associates with the risk of adult-onset asthma.
A meta-analysis of interleukin-6 promoter polymorphisms on risk of hip and knee osteoarthritis.
Genetic susceptibility of intervertebral disc degeneration among young Finnish adults.
Content updated August 2026.
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