rs2143340(G;G)

> 2x risk of dyslexia and poor reading performance

Magnitude
2.3Worth knowing
Repute
Bad
Frequency
5%Average of 4 populations
On SNPedia
rs2143340(C;C)Minus strand
Gene
TTRAP

Frequency

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

  • European ancestry (Utah)6%
  • Han Chinese (Beijing)4%
  • Japanese (Tokyo)4%
  • Yoruba (Nigeria)3%

Other genotypes of rs2143340

  1. A;GBadincreased risk of dyslexia and poor reading performanceWorth knowing · 2.025% of people
  2. A;AGoodcommonTypical · 0.071% of people

All about rs2143340

Source and license

Adapted from rs2143340(C;C) 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.