Gene

SLC23A1

SLC23A1 encodes SVCT1, a sodium-dependent transporter expressed in the intestine, kidney, and liver that mediates dietary absorption and renal reabsorption of ascorbic acid (vitamin C). Common SLC23A1 variants, including rs33972313, are established GWAS hits for circulating vitamin C concentration, reflecting differences in how efficiently the transporter moves vitamin C across cell membranes.

Traits SLC23A1 shapes

Vitamin C absorption

Markers (rsIDs)

rs33972313

Reference databases

HGNC gene symbol report: SLC23A1
NCBI Gene: SLC23A1

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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.