Gene

CHRNA5

CHRNA5 makes one part of a nicotine-sensitive receptor in the brain. The rs16969968 A version changes receptor function and has a small, repeated link to heavier smoking and stronger dependence measures among people who smoke. It does not predict smoking initiation or quitting.

Traits CHRNA5 shapes

Nicotine dependence tendency

Markers (rsIDs)

rs16969968

Reference databases

HGNC gene symbol report: CHRNA5
NCBI Gene: CHRNA5

How Biome reads this

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This page is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Genetic results describe tendencies and predispositions, not diagnoses. Always consult a licensed clinician before making decisions about your health, medications, or supplements.