Sensitive

Substance use disorder

TCF20 · rs9306356

Where this position leads

Condition: Substance Use Disorder

What the study found

Who was studied 1,458,999 European ancestry individuals, 58,370 mixed American ancestry individuals.

The effect Each copy of the T allele shifted the measure 5.85 higher; p = 5 × 10⁻⁹.

Where it sits Chromosome 22, band 22q13.2 — in an intron of TCF20.

What each result means

C/C Published research associates this genotype with typical/baseline likelihood of Substance use disorder — no copies of the reported risk allele.

C/T Published research associates this genotype (one copy of the reported risk allele) with an intermediate association with Substance use disorder.

T/T Published research associates this genotype (two copies of the reported risk allele) with a higher likelihood of Substance use disorder compared to the general population.

Source

Genome-wide meta-analyses of cross substance use disorders in diverse populations

Lai D, Zhang M, Green N, Abreu M, Schwantes-An TH, Parker CC, Zhang S, Jin F, Sun A, Zhang P, Edenberg HJ, Liu Y

and 1 more — show all

Foroud T

Molecular psychiatry · 2026 · PMID 41057643 · open access

Questions about rs9306356

What is rs9306356?

rs9306356 is a single position in the genome, in or near the TCF20 gene. Published research associates it with substance use disorder. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

What conditions is rs9306356 linked to?

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

Does having rs9306356 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 rs9306356 come from?

GWAS Catalog, Molecular psychiatry 2026, PMID:41057643. 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.

Substance use disorder (rs9306356). MyGeneLog™. https://www.mygenelog.com/variants/rs9306356

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