rs28936677

A SNP in the PPOX gene on chromosome 1. Its most notable genotype is C;C: Variegate porphyria

Gene
PPOX
Location
Chr 1161,166,882 (GRCh38)
Highest magnitude
3.5Important
Tested on
23andMe, AncestryDNA

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. C;CMost notableBadVariegate porphyriaImportant · 3.5
  2. C;TBadVariegate porphyria carrierImportant · 3.0
  3. T;TGoodcommon in clinvarTypical · 0.0

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

Other PPOX SNPs

All PPOX SNPs

Source and license

Adapted from rs28936677 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.