Who was studied 257,365 African ancestry, admixed American, East Asian ancestry, European ancestry, South Asian ancestry, Greater Middle Eastern cases, 2,186,763 African ancestry, admixed American, East Asian ancestry, European ancestry, South Asian ancestry, Greater Middle Eastern controls.
The effect
Each copy of the T allele shifted the measure 0.0333 higher (95% confidence interval 0.026-0.041); p = 4 × 10−18.
How common The T allele had a frequency of about 36% in the people studied.
Where it sits Chromosome 6, band 6q21 — between genes, 5 kb from BEND3.
What each result means
C/CPublished research associates this genotype with typical/baseline likelihood of Hypothyroidism — no copies of the reported risk allele.
C/TPublished research associates this genotype (one copy of the reported risk allele) with an intermediate association with Hypothyroidism.
T/TPublished research associates this genotype (two copies of the reported risk allele) with a higher likelihood of Hypothyroidism compared to the general population.
Nature genetics · 2026 · PMID 41644669 · open access
Questions about rs12208103
What is rs12208103?
rs12208103 is a single position in the genome, in or near the near BEND3 gene. Published research associates it with hypothyroidism. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
What conditions is rs12208103 linked to?
On MyGeneLog this position is linked to Hypothyroidism. The research behind each link, and its sources, are set out on that condition page.
Does having rs12208103 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 rs12208103 come from?
GWAS Catalog, Nature genetics 2026, PMID:41644669. 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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