CHRNB1 · rs34730991
Where this position leads
Condition: Waist Circumference
Strength of the evidence
Its strongest genetic-study result is p = 10−8, with 1 associations in the GWAS Catalog.
4: ClinVar disease-causing, reviewed by an expert panel or a guideline (3–4 stars). 3: ClinVar, several labs agreeing (2 stars), or a genetic study at p ≤ 10−50. 2: ClinVar from one lab (1 star), or p ≤ 10−20. 1: ClinVar submitted without criteria (0 stars), or genome-wide significance (p ≤ 5×10−8). The higher of the two counts. It says how solid the evidence is, not whether it matters for a particular person.
What the study found
Who was studied 219,872 British ancestry women.
The effect Each copy of the T allele shifted the measure 0.0173 lower (95% confidence interval 0.012-0.023); p = 4 × 10−9.
Where it sits Chromosome 17, band 17p13.1 — in an intron of CHRNB1.
rs34730991 is a single position in the genome, in or near the CHRNB1 gene. Published research associates it with waist circumference adjusted for body mass index. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
On MyGeneLog this position is linked to Waist Circumference. The research behind each link, and its sources, are set out on that condition page.
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.
GWAS Catalog, Scientific reports 2021, PMID:34021172. 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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Waist circumference adjusted for body mass index (rs34730991). MyGeneLog™. https://www.mygenelog.com/variants/rs34730991