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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 1,544 Sub-Saharan African ancestry individuals.
The effect
Each copy of the G allele shifted the measure 3.12 higher; p = 2 × 10−8.
How common The G allele had a frequency of about 2% in the people studied.
What each result means
A/ANo copy of the version the research linked to Skin color in blue band. This is the starting point the study compared everyone against.
A/GOne copy of the version the research linked to Skin color in blue band. That is a smaller link than two copies.
G/GTwo copies of the version the research linked to Skin color in blue band. That is the strongest link of the three results. A link in a study is not a diagnosis.
American journal of human genetics · 2026 · PMID 42586059
Questions about rs1004420978
What is rs1004420978?
rs1004420978 is a single position in the genome, in or near the near ERGIC1 gene. Published research associates it with skin color in blue band. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
Does having rs1004420978 mean I will get this?
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.
Where does the information about rs1004420978 come from?
GWAS Catalog, American journal of human genetics 2026, PMID:42586059. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
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Quoting this page
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.
Skin color in blue band (rs1004420978). MyGeneLog™. https://www.mygenelog.com/variants/rs1004420978