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ESR1 rs2347867: what the research says

rs2347867
Reproductive
Moderate evidenceGene: ESR1

This variant in the estrogen receptor 1 gene is associated with human reproductive behavior and influences estrogen-responsive gene expression.

What each genotype means

A/AModerate attention

Major allele homozygous

This genotype is associated with higher odds of above-median percent mammographic density in some studies, particularly in lean women. Research also suggests that individuals with this genotype may not show the same protective association between dietary enterolactone and breast cancer risk as those carrying the minor allele.

This is the major homozygous genotype and is generally the most common form found across most global populations.

A/GModerate attention

Heterozygous carrier

As a carrier of one minor allele, your profile may show intermediate characteristics regarding estrogen-responsive gene expression and mammographic density markers. Research indicates that carriers of the minor allele may experience different interactions between dietary factors like enterolactone and breast cancer risk compared to those without the minor allele.

This genotype is found at varying frequencies depending on ancestral background, typically representing a significant portion of the population.

G/GModerate attention

Minor allele homozygous

This genotype is associated with lower odds of above-median percent mammographic density compared to the major homozygous genotype, with effects most pronounced in lean women. Studies suggest that individuals with this genotype may benefit from a protective association between high plasma enterolactone levels and breast cancer risk.

This is the minor homozygous genotype and is generally less common than the major homozygous genotype across most populations.

Variable

Our full long-form research profile for rs2347867 — genotype interpretations, evidence review, and FAQ — is being written and will appear on this page soon.

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