rs3850641

A SNP in the TNFSF4 gene on chromosome 1. Its most notable genotype is A;G: Increased risk of myocardial infarction in women

Gene
TNFSF4
Location
Chr 1173,206,693 (GRCh38)
Highest magnitude
1.2Minor
Tested on
23andMe, AncestryDNA, FamilyTreeDNA
Minor allele frequency
14%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. A;GMost notableBadIncreased risk of myocardial infarction in womenMinor · 1.216% of people
  2. G;GNot ratedLess susceptible to autoimmune thyroid diseases, but women more susceptible to myocardial infarctionMinor · 1.21% of people

On SNPedia: (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;G 16% G;G 1%
  • European ancestry (Utah)A;G 31% G;G 5%
  • Han Chinese (Beijing)A;G 21% G;G 0%
  • Japanese (Tokyo)A;G 9% G;G 0%
  • Yoruba (Nigeria)A;G 3% G;G 0%

Notes

From SNPedia

Show notes, about 230 words

(2016 article) "An association between GG genotype of rs3850641 in TNFSF4 gene and AITDs was found (p = 0.046). Additionally, the clinical sub-phenotype analysis revealed a significant association between GG genotype in rs7514229 and AITDs patients who were ≤18 years of age. Furthermore, rs3850641 variant allele G was in strong association with hypothyroidism in Hashimoto’s thyroiditis (HT) (p = 0.018)." (Abstract). ... "Further analysis found that the frequencies of TT genotype in rs7514229 and GG genotype in rs3850641 were lower in the AITDs group than the control group (Table 3), which suggested that people with these genotypes are less susceptible to AITDs (p = 0.016, OR = 0.236, 95% CI = 0.066–0.850 and p = 0.027, OR = 0.492, 95% CI = 0.259–0.935, respectively)." . Participants were genotyped for the rs3850641 SNP in TNFSF4. Genotype associations were neither found with TNFSF4 mRNA levels nor with atherosclerosis associated systemic factors or risk for stroke. (2005 article). "In two independent human populations, the less common allele of SNP rs3850641 in TNFSF4 was significantly more frequent (P <or= 0.05) in individuals with myocardial infarction than in controls." (Abstract) (2011 article) "The rs45454293T-allele, in agreement with the linked rs3850641G-allele, proved to be associated with increased risk of MI in women."

Source and license

Adapted from rs3850641 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.