HERC2 · rs3940272
Where this position leads
Condition: Hair Color
What the study found
Who was studied 10,990 European ancestry individuals.
The effect Each copy of the T allele shifted the measure 0.638 lower (95% confidence interval 0.5-0.77); p = 4 × 10−20.
Where it sits Chromosome 15, band 15q13.1 — in an intron of HERC2.
rs3940272 is a single position in the genome, in or near the HERC2 gene. Published research associates it with brown vs. black hair color. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
On MyGeneLog this position is linked to Hair Color. The research behind each link, and its sources, are set out on that condition page.
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, Communications biology 2021, PMID:34737440. 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.
Brown vs. black hair color (rs3940272). MyGeneLog™. https://www.mygenelog.com/variants/rs3940272