Gene

ARNTL

ARNTL (also known as BMAL1) encodes a core circadian-clock transcription factor that heterodimerizes with CLOCK to drive rhythmic, genome-wide expression of clock-controlled genes. Because this circadian machinery also times skin and metabolic responses to daylight, ARNTL variation is used as genetic context for how the body's vitamin D response interacts with sun exposure and season.

Traits ARNTL shapes

Vitamin D level

Reference databases

HGNC gene symbol report: ARNTL
NCBI Gene: ARNTL

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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.