rs3764880

A SNP in the TLR8 gene on chromosome X. Its most notable genotype is A;A: 1.2 - 1.8x increased tuberculosis risk

Gene
TLR8
Location
Chr X12,906,707 (GRCh38)
Highest magnitude
1.6Minor
Tested on
23andMe, AncestryDNA, FamilyTreeDNA
Minor allele frequency
44%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. A;AMost notableBad1.2 - 1.8x increased tuberculosis riskMinor · 1.638% of people
  2. A;GBadpossible 1.2 - 1.8x increased tuberculosis susceptibility in femalesMinor · 1.521% of people
  3. G;GNot ratednormalTypical · 0.040% of people

On SNPedia: (A;A), (A;G), (G;G). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Frequency

Share of each genotype in 4 HapMap populations.

  • AverageA;A 38% A;G 21% G;G 40%
  • European ancestry (Utah)A;A 69% A;G 14% G;G 17%
  • Han Chinese (Beijing)A;A 9% A;G 27% G;G 64%
  • Japanese (Tokyo)A;A 16% A;G 23% G;G 61%
  • Yoruba (Nigeria)A;A 59% A;G 22% G;G 19%

Conditions, medicines and genes

Genosets

Genosets combine several genotypes. Twofold checks them in your report.

Notes

From SNPedia

Show notes, about 210 words

rs3764880 is a SNP in the TLR8 gene, located on the X chromosome. rs3764880 is also known as Met1Val. A study of both Indonesian and Russian tuberculosis patients (and controls) concluded that the minor (A) allele of rs3764880 was associated with increased risk for tuberculosis. In the Indonesian population of 375 patients, the odds ratio was 1.8 (CI: 1.2–2.7); in the Russian population of 1,837 patients, the odds ratio was 1.2 (CI: 1.02–1.48); the combined evidence for association was p = 1.2×10e?3 – 6×10e?4. Note that the association was found primarily in males (although also to a lesser extent in homozygous females), presumably due to the presence of only one X chromosome in males. A functional toll-like receptor 8 variant is associated with HIV disease restriction. Toll-like receptor 8 polymorphism and coronary artery disease. Application of pharmacogenomics to vaccines. Toll-like receptor signaling pathway variants and prostate cancer mortality. Common genetic variation and the control of HIV-1 in humans. Association of polymorphisms in TLR genes and in genes of the Toll-like receptor signaling pathway with cancer risk. TLR7/8/9 polymorphisms and their associations in systemic lupus erythematosus patients from southern Brazil.

Source and license

Adapted from rs3764880 on SNPedia, using a snapshot taken October 16, 2026. SNPedia content is shared under CC BY-NC-SA 3.0 US, and this page is shared under the same license.

SNPedia is a community-edited wiki. Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice. Magnitude is a community rating of how interesting a genotype is, not a risk score.