rs1800693(C;C)

Slight (1.4x) increase in risk for multiple sclerosis

Magnitude
1.4Minor
Repute
Bad
Frequency
11%Average of 11 populations
On SNPedia
rs1800693(G;G)Minus strand
Gene
TNFRSF1A

Frequency

Share of people with C;C in each HapMap population.

  • European ancestry (Utah)25%
  • Tuscan20%
  • Luhya (Kenya)15%
  • Gujarati Indian14%
  • African ancestry (Southwest US)12%
  • Yoruba (Nigeria)12%
  • Maasai (Kenya)12%
  • Mexican ancestry (Los Angeles)10%
  • Japanese (Tokyo)3%
  • Chinese (Denver)2%
  • Han Chinese (Beijing)<1%

Other genotypes of rs1800693

  1. T;TGoodcommon/normalTypical · 0.050% of people
  2. C;TBadslight (1.2x) increase in risk for multiple sclerosisMinor · 1.239% of people

All about rs1800693

Source and license

Adapted from rs1800693(G;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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.