ABCC11 rs17822932: Understanding Your Earwax and Body Odor Genetics
The rs17822932 variant is a well-studied genetic marker located within the ABCC11 gene, which plays a primary role in determining human earwax consistency. This variant is strongly associated with the physical transition between wet and dry earwax types and is also linked to variations in axillary (underarm) body odor.
What each genotype means
Wet earwax and standard odor
This genotype is associated with the production of wet, sticky, yellow-brown earwax and the secretion of apocrine odor precursors. Individuals with this genotype typically exhibit standard levels of underarm body odor.
This is the most common genotype in populations of European and African ancestry, but it is rare in East Asian populations.
Wet earwax and standard odor
This heterozygous genotype is associated with the wet earwax phenotype and the presence of standard underarm body odor. The G allele is dominant, meaning that even with one copy of the A allele, the functional transporter protein is typically produced.
This genotype is found at varying frequencies globally, appearing in individuals who carry one copy of the functional G allele.
Dry earwax and minimal odor
This genotype results in a loss of function of the ABCC11 transporter protein, which is associated with dry, flaky, white earwax and significantly reduced or absent underarm body odor. This is a recessive trait, meaning both copies of the gene must be the A variant to observe this phenotype.
This genotype is very common among East Asian populations, where it is carried by 80-90% of the population, but it is rare in other global populations.
What is rs17822932?
The rs17822932 variant is a single nucleotide polymorphism (SNP) found within the ABCC11 gene on human chromosome 16. In the context of human genetics, a SNP represents a variation at a single position in the DNA sequence. While rs17822932 is often discussed in literature alongside the closely related rs17822931, it serves as a critical marker for understanding the functional output of the ABCC11 protein. This gene provides instructions for creating a protein that acts as a transporter, moving molecules across cell membranes. Because this variant is located in a region that influences how this transporter functions, it has a direct impact on the chemical composition of secretions from certain glands in the body, most notably those in the ear canal and the underarms.
The Role of the ABCC11 Gene
The ABCC11 gene encodes a protein known as the multidrug resistance-associated protein 8 (MRP8). This protein is an ATP-binding cassette transporter, meaning it uses energy to move substances out of cells. In the human body, this protein is highly active in apocrine sweat glands, which are found in the ear canal and the axillary regions. When the ABCC11 protein is fully functional, it transports specific lipid and protein molecules into the sweat, resulting in 'wet' earwax and a higher potential for body odor. Conversely, when the gene carries variants that reduce or eliminate this transport activity, the resulting secretions lack these specific components. This leads to the 'dry' earwax phenotype, which is characterized by a flaky, greyish appearance, and is typically associated with a significant reduction in axillary odor.
Research and Associations
Scientific research has established a robust link between ABCC11 variants and the physical traits of earwax and body odor. Studies have consistently shown that the 'wet' earwax phenotype is genetically dominant, while the 'dry' phenotype is recessive. The evidence for this association is considered strong within the field of human genetics, as it is one of the few examples where a specific genetic change directly correlates with a visible, non-pathological human trait. While the primary association is with earwax type, researchers have also investigated the link between these genotypes and axillary osmidrosis, a condition characterized by excessive underarm odor. Because the same glands responsible for earwax composition also produce underarm sweat, the genetic profile that leads to dry earwax is statistically associated with a lower intensity of body odor.
Population Frequency
The distribution of the ABCC11 variant shows striking differences across global populations, reflecting human migration patterns and historical natural selection. The allele associated with dry earwax is found at very high frequencies in East Asian populations, often exceeding 85% to 90% in countries like China, Korea, and Japan. In contrast, this same allele is extremely rare or nearly absent in populations of African and European descent, where the 'wet' earwax allele is the standard. This geographical gradient suggests that the dry-earwax mutation likely originated in northeast Asia thousands of years ago and became fixed in those populations. Because of this, your ancestry can be a strong predictor of which genotype you are likely to carry, making this variant a common subject in studies of human population genetics and evolutionary history.
What This Information Means for You
Understanding your genotype for rs17822932 provides insight into your biological traits, specifically regarding earwax consistency and body odor. It is important to recognize that these traits are normal human variations and are not indicators of health or disease. This information is primarily educational and helps explain why individuals may have different personal hygiene needs or physical characteristics. Because this variant is not a diagnostic tool for any medical condition, it does not require clinical intervention or medical follow-up. If you have concerns about body odor or ear health, these are best addressed through standard hygiene practices or by consulting a primary care physician or dermatologist. Genetic testing for this variant is not necessary for medical management, and you should view these results as a window into your unique genetic heritage rather than a health assessment.
How common is this variant?
The allele frequency for the dry-earwax variant is very high in East Asian populations (>0.85) and significantly lower in African and European populations (<0.05).
Frequently asked questions
Is dry earwax a sign of a health problem?
No, dry earwax is a normal human variation determined by your genetics. It is not a sign of illness or a medical condition.
Can my earwax type change over time?
No, your earwax type is determined by your DNA at conception and remains consistent throughout your life. It is a stable genetic trait.
Does this gene affect my health?
The ABCC11 gene is primarily involved in the production of earwax and sweat. It is not typically associated with significant health risks or diseases.
Why do some people have more body odor than others?
Body odor is influenced by many factors, including the activity of apocrine sweat glands. The ABCC11 gene plays a role in this by determining the chemical composition of the sweat produced.
Sources & further reading
Educational information only, last refreshed 9/22/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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Non-coding regulatory variant in linkage disequilibrium with the dry earwax and body odor determinant allele.
Functional determinant of earwax dry/wet type and axillary body odor presentation via apocrine gland excretion.
Classic determinant of dry earwax versus wet earwax and axillary body odor production.
This variant determines earwax type (wet vs. dry) and is a primary genetic determinant of axillary osmidrosis (body odor).
This variant is often confused with the functional rs17822931 (538G>A) variant; rs17822931 is the primary determinant of apocrine secretion, dry versus wet earwax, and axillary osmidrosis.
This variant in the ABCC11 gene is the primary determinant of earwax type, where the AA genotype results in dry earwax and the GG/GA genotypes result in wet earwax.