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Who was studied 221,596 European ancestry cases, 1,564,466 European ancestry controls.
The effect
Each copy of the T allele shifted the measure 0.0513 lower (95% confidence interval 0.042-0.061); p = 5 × 10−28.
How common The T allele had a frequency of about 20% in the people studied.
Where it sits Chromosome 13, band 13q32.3 — between genes, 16.4 kb from RPS6P23.
What each result means
C/CNo copy of the version the research linked to Hypothyroidism. This is the starting point the study compared everyone against.
C/TOne copy of the version the research linked to Hypothyroidism. That is a smaller link than two copies.
T/TTwo copies of the version the research linked to Hypothyroidism. That is the strongest link of the three results. A link in a study is not a diagnosis.
Nature genetics · 2026 · PMID 41644669 · open access
Questions about rs9554559
What is rs9554559?
rs9554559 is a single position in the genome, in or near the near RPS6P23 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 rs9554559 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 rs9554559 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 rs9554559 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.
0 1812213Reads by AI crawlersClaude0ChatGPT0Google · Gemini0Perplexity1Meta AI0Microsoft · Copilot0Amazon2Apple0China (ByteDance, Huawei, Baidu…)2ByteDance (Doubao)2Others13Total18Counted by the name each crawler declares; requests found to be impersonating one are left out. Google · Gemini includes Googlebot, the search crawler whose index Google also uses for its AI features. Other search engines and bots are under Others.
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