rs121918221

A SNP in the SEC23B gene on chromosome 20. Its most notable genotype is A;G: Carrier of a congenital dyserythropoietic anemia type II mutation

Gene
SEC23B
Location
Chr 2018,515,695 (GRCh38)
Highest magnitude
3.0Important
Tested on
23andMe, AncestryDNA
Minor allele frequency
<1%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. A;GMost notableBadCarrier of a congenital dyserythropoietic anemia type II 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.

Notes

From SNPedia

Notes

aka c.325G>A (p.Glu109Lys or E109K)

A;G

Unaffected in absence of a second SEC23B gene mutation

Source and license

Adapted from rs121918221 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.