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Who was studied 397,338 European ancestry individuals.
The effect
Each copy of the C allele shifted the measure 0.0159 higher (95% confidence interval 0.012-0.02); p = 3 × 10−13.
How common The C allele had a frequency of about 68% in the people studied.
Where it sits Chromosome 13, band 13q21.1 — between genes, 91.6 kb from HMGN2P39.
What each result means
A/ANo copy of the version the research linked to Age at first sexual intercourse. This is the starting point the study compared everyone against.
A/COne copy of the version the research linked to Age at first sexual intercourse. That is a smaller link than two copies.
C/CTwo copies of the version the research linked to Age at first sexual intercourse. That is the strongest link of the three results. A link in a study is not a diagnosis.
Nature human behaviour · 2021 · PMID 34211149 · open access
Questions about rs9538248
What is rs9538248?
rs9538248 is a single position in the genome, in or near the near HMGN2P39 gene. Published research associates it with age at first sexual intercourse. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
What conditions is rs9538248 linked to?
On MyGeneLog this position is linked to Age at First Sexual Intercourse. The research behind each link, and its sources, are set out on that condition page.
Does having rs9538248 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 rs9538248 come from?
GWAS Catalog, Nature human behaviour 2021, PMID:34211149. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
0 5122Reads by AI crawlersClaude0ChatGPT0Google · Gemini0Perplexity1Meta AI0Microsoft · Copilot0Amazon2Apple0China (ByteDance, Huawei, Baidu…)0Others2Total5Counted 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
Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.
Age at first sexual intercourse (rs9538248). MyGeneLog™. https://www.mygenelog.com/variants/rs9538248