HCG20 · rs3129981
Stands on its own. Nothing else here links to this position yet — but the page above is the point: what the research found, what each genotype means, and where it came from, in language you can read. Links to conditions, drugs and the senses appear automatically if we write them.
What the study found
Who was studied 110,346 European ancestry males.
The effect The reported allele is T; the catalogue records no effect size ; p = 2 × 10−10.
Where it sits Chromosome 6, band 6p21.33 — in an intron of HCG20.
rs3129981 is a single position in the genome, in or near the HCG20 gene. Published research associates it with omega-3 fatty acid levels. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.
GWAS Catalog, HGG advances 2025, PMID:40545721. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.
Omega-3 fatty acid levels (rs3129981). MyGeneLog™. https://www.mygenelog.com/variants/rs3129981