rs121908639

A SNP in the ASS1 gene on chromosome 9. Its most notable genotype is A;G: Carrier of a citrullinemia type I mutation

Gene
ASS1
Location
Chr 9130,489,464 (GRCh38)
Highest magnitude
3.0Important
Tested on
AncestryDNA

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. A;GMost notableBadCarrier of a citrullinemia type I mutationImportant · 3.0
  2. G;GGoodcommon in clinvarTypical · 0.0

On SNPedia: (A;G), (G;G). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Other ASS1 SNPs

All ASS1 SNPs

Notes

From SNPedia

Notes

aka c.970G>A (p.Gly324Ser or G324S)

A;G

Unaffected in absence of a second ASS1 gene mutation

Source and license

Adapted from rs121908639 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.