rs9340799(A;G)

Women have normal (lower) risk of Endometriosis, 0.75x lower risk of Endometrial Cancer, and normal (higher) risk of cognitive impairment.

Magnitude
2.0Worth knowing
Repute
Good
Frequency
31%Average of 4 populations
On SNPedia
rs9340799(A;G)
Gene
ESR1

Frequency

Share of people with A;G in each HapMap population.

  • European ancestry (Utah)42%
  • Yoruba (Nigeria)32%
  • Han Chinese (Beijing)25%
  • Japanese (Tokyo)24%

Other genotypes of rs9340799

  1. A;AGoodWomen have lower risk of Endometriosis but normal risk for Endometrial Cancer, and more cognitive impairment with age.Worth knowing · 2.062% of people
  2. G;GMost notableBadWomen have 10x risk of Endometriosis, but half the risk of Endometrial Cancer and 0.76x less cognitive impairment.Important · 3.07% of people

All about rs9340799

Notes

From SNPedia

Men have zero risk, but can pass this on to their daughters. One normal and one rare version of Estrogen Receptor 1 (alpha).

Source and license

Adapted from rs9340799(A;G) 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.