Standard

Height

SMCHD1 · rs2347808

Where this position leads

Condition: Height

rs2347808 Condition: Height Height Condition rs2347808 rs2347808 SMCHD1

What the study found

Who was studied 507,850 East Asian ancestry individuals, 420,829 European ancestry individuals.

The effect Each copy of the A allele shifted the measure 0.0147 lower (95% confidence interval 0.012-0.017); p = 3 × 10−33.

Where it sits Chromosome 18, band 18p11.32 — in an intron of SMCHD1.

What each result means

A/A Two copies of the version the research linked to Height. That is the strongest link of the three results. A link in a study is not a diagnosis.
A/G One copy of the version the research linked to Height. That is a smaller link than two copies.
G/G No copy of the version the research linked to Height. This is the starting point the study compared everyone against.
Source

Questions about rs2347808

What is rs2347808?

rs2347808 is a single position in the genome, in or near the SMCHD1 gene. Published research associates it with height. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

What conditions is rs2347808 linked to?

On MyGeneLog this position is linked to Height. The research behind each link, and its sources, are set out on that condition page.

Does having rs2347808 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 rs2347808 come from?

GWAS Catalog, Nature communications 2025, PMID:40436827. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

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.

Height (rs2347808). MyGeneLog™. https://www.mygenelog.com/variants/rs2347808

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