Who was studied 15,106 European ancestry cases, 1,405,552 European ancestry controls.
The effect
Each copy of the G allele shifted the measure 0.0746 lower (95% confidence interval 0.049-0.101); p = 2 × 10−8.
How common The G allele had a frequency of about 39% in the people studied.
Where it sits Chromosome 19, band 19q13.33 — in an intron of CPT1C.
What each result means
A/APublished research associates this genotype with typical/baseline likelihood of Lymphocytic thyroiditis — no copies of the reported risk allele.
A/GPublished research associates this genotype (one copy of the reported risk allele) with an intermediate association with Lymphocytic thyroiditis.
G/GPublished research associates this genotype (two copies of the reported risk allele) with a higher likelihood of Lymphocytic thyroiditis compared to the general population.
Nature genetics · 2026 · PMID 41644669 · open access
Questions about rs12981033
What is rs12981033?
rs12981033 is a single position in the genome, in or near the CPT1C gene. Published research associates it with lymphocytic thyroiditis. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
What conditions is rs12981033 linked to?
On MyGeneLog this position is linked to Lymphocytic Thyroiditis (Hashimoto's). The research behind each link, and its sources, are set out on that condition page.
Does having rs12981033 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 rs12981033 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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