rs855913

A SNP on chromosome 7. Its most notable genotype is A;A: reduced survival with ALS

Gene
None listed
Location
Chr 7149,506,571 (GRCh38)
Highest magnitude
2.1Worth knowing
Tested on
23andMe, AncestryDNA
Minor allele frequency
3%

Genotypes

Plus strand, as in 23andMe and AncestryDNA files.

  1. C;CGoodcommon in complete genomicsTypical · 0.098% of people
  2. A;CBadreduced survival with ALSWorth knowing · 2.02% of people
  3. A;AMost notableBadreduced survival with ALSWorth knowing · 2.1<1% of people

SNPedia records rs855913 on the minus strand: (G;G), (G;T), (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Frequency

Share of each genotype in 9 HapMap populations.

  • AverageC;C 98% A;C 2% A;A <1%
  • European ancestry (Utah)C;C 93% A;C 7% A;A 0%
  • Han Chinese (Beijing)C;C 100% A;C 0% A;A 0%
  • Japanese (Tokyo)C;C 100% A;C 0% A;A 0%
  • Yoruba (Nigeria)C;C 100% A;C 0% A;A 0%
  • African ancestry (Southwest US)C;C 97% A;C 2% A;A 2%
  • Gujarati IndianC;C 99% A;C 1% A;A 0%
  • Luhya (Kenya)C;C 99% A;C <1% A;A 0%
  • Maasai (Kenya)C;C 99% A;C <1% A;A 0%
  • TuscanC;C 95% A;C 5% A;A 0%

Source and license

Adapted from rs855913 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.