rs7769409

A SNP in the C4B gene on chromosome 6. Its most notable genotype is T;T: Congenital adrenal hyperplasia

Gene
C4B
Location
Chr 632,040,535 (GRCh38)
Highest magnitude
5.0Very important
Tested on
Not on consumer chips

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. C;CGoodcommon in clinvarTypical · 0.0
  2. C;TBadmiscallled by 23andMe, but should indicate being a carrier of allele for congenital adrenal hyperplasiaImportant · 3.0
  3. T;TMost notableBadCongenital adrenal hyperplasiaVery important · 5.0

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

Conditions, medicines and genes

Other C4B SNPs

All C4B SNPs

Notes

From SNPedia

Notes

C;T

As with rs7755898(C;T), for 23andMe users this commonly occurs as the result of a genotyping error in that testing platform. This can be seen in the opensnp data. If you were tested on another platform this may be real and further testing is perhaps warranted. See discussion at Congenital adrenal hyperplasia

T;T

See discussion at Congenital adrenal hyperplasia

Source and license

Adapted from rs7769409 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.