rs2143340(A;G)

Increased risk of dyslexia and poor reading performance

Magnitude
2.0Worth knowing
Repute
Bad
Frequency
25%Average of 4 populations
On SNPedia
rs2143340(C;T)Minus strand
Gene
TTRAP

Frequency

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

  • Yoruba (Nigeria)32%
  • European ancestry (Utah)28%
  • Japanese (Tokyo)22%
  • Han Chinese (Beijing)18%

Other genotypes of rs2143340

  1. G;GMost notableBad> 2x risk of dyslexia and poor reading performanceWorth knowing · 2.35% of people
  2. A;AGoodcommonTypical · 0.071% of people

All about rs2143340

Source and license

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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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