Hair colour (natural, before greying): Dark brown (UKB data field 1747_4)
CBFA2T3 · rs190233891
0 22Reads by AI crawlersClaude0ChatGPT0Google · Gemini0Perplexity0Meta AI0Microsoft · Copilot0Amazon0Apple0China (ByteDance, Huawei, Baidu…)0Others2Total2Counted 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.
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 171,614 European ancestry cases, 283,550 European ancestry controls.
The effect
Each copy of the A allele shifted the measure 0.16 lower (95% confidence interval 0.11-0.21); p = 2 × 10−11.
How common The A allele had a frequency of about 1% in the people studied.
Where it sits Chromosome 16, band 16q24.3 — in an intron of CBFA2T3.
What each result means
A/ATwo copies of the version the research linked to Hair colour (natural, before greying): Dark brown (UKB data field 1747_4). That is the strongest link of the three results. A link in a study is not a diagnosis.
A/GOne copy of the version the research linked to Hair colour (natural, before greying): Dark brown (UKB data field 1747_4). That is a smaller link than two copies.
G/GNo copy of the version the research linked to Hair colour (natural, before greying): Dark brown (UKB data field 1747_4). This is the starting point the study compared everyone against.
rs190233891 is a single position in the genome, in or near the CBFA2T3 gene. Published research associates it with hair colour (natural, before greying): dark brown (ukb data field 1747_4). A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
Does having rs190233891 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 rs190233891 come from?
GWAS Catalog, Nature genetics 2021, PMID:34737426. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
0 22Reads by AI crawlersClaude0ChatGPT0Google · Gemini0Perplexity0Meta AI0Microsoft · Copilot0Amazon0Apple0China (ByteDance, Huawei, Baidu…)0Others2Total2Counted 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.
Quoting this page
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Hair colour (natural, before greying): Dark brown (UKB data field 1747_4) (rs190233891). MyGeneLog™. https://www.mygenelog.com/variants/rs190233891