What is rs4284505 (ESR1) nd Why Does the Nutrient Zoomer Test for It?

Estrogen receptor gene variant

rs4284505 is a single nucleotide variant in ESR1, the gene for estrogen receptor alpha, a transcription factor that mediates estrogen signaling across tissues. Variants at this site can alter receptor expression or activity, which can influence hormone-sensitive processes relevant to nutrient handling and metabolic responses. Testing this variant helps explain inherited differences that may shape individual nutrient patterns and responses to care.

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rs4284505 (ESR1)

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About rs4284505 (ESR1)

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About rs4284505 (ESR1)

Overview and History

rs4284505 is a single nucleotide polymorphism (SNP) located within or near the ESR1 locus, which encodes estrogen receptor alpha (ERα). ERα belongs to the nuclear receptor superfamily and acts as a ligand‑activated transcription factor, translating estrogenic signals into changes in gene expression across bone, vascular, brain, liver, and reproductive tissues. Genetic variation in ESR1 has been studied for decades as a source of inherited differences in estrogen signaling. Common SNPs such as rs4284505 are used in research and clinical genomics to probe how stable, inherited differences in receptor expression or regulation correlate with physiological patterns and biomarker profiles relevant to metabolism, inflammation, and tissue remodeling.

Interpreting Highs and Lows

Genetic results for rs4284505 are reported as genotypes rather than concentrations. Some alleles or genotype combinations have been associated with relatively greater inferred ESR1 expression or activity; these associations can align with patterns in lipid handling, bone and connective‑tissue markers, and inflammatory signaling. Other alleles are associated with relatively lower inferred activity and may correlate with different biomarker patterns. Any single-genotype association is context dependent—interpretation is most informative when considered alongside the Nutrient Zoomer’s biochemical measures and the individual’s clinical history.

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rs4284505 is included in the Nutrient Zoomer to help explain inherited variation in estrogen receptor signaling that can influence nutrient metabolism, bone and vascular biology, and inflammatory responses. By linking genotype with direct nutrient and metabolic markers, the panel helps clinicians identify patterns and tailor nutrition strategies to an individual’s biochemical and genetic profile.

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rs4284505 (ESR1) FAQs

What is rs4284505 (ESR1) and why is it important?

rs4284505 is a common genetic variant in the ESR1 gene, which encodes estrogen receptor alpha. That receptor helps regulate genes responsive to estrogen across many tissues. Knowing this variant helps clarify inherited differences in hormone‑linked biology that can affect nutrient processing and metabolic patterns.

What does it mean if my rs4284505 (ESR1) levels are low?

Genetic results are reported as genotypes rather than "levels." A genotype associated with lower inferred ESR1 activity may be linked to different patterns in lipid markers, bone‑related biomarkers, or inflammatory signals compared with other genotypes. These are associations that gain meaning when viewed alongside the Nutrient Zoomer’s vitamin, mineral, amino acid, and fatty acid results.

What does it mean if my rs4284505 (ESR1) levels are high?

A genotype associated with higher inferred ESR1 expression or activity may be associated with alternative patterns in metabolism, lipid handling, tissue remodeling, or inflammatory markers. Elevated inferred activity is an association, not a diagnosis, and its relevance depends on the full panel of nutrient and metabolic results and clinical context.

Why is rs4284505 (ESR1) included in the Nutrient Zoomer?

Including rs4284505 helps providers connect inherited differences in estrogen receptor signaling with real‑time nutrient and metabolic biomarkers. That link can clarify why individuals with similar diets or lab values respond differently, supporting more precise, personalized nutrition assessment and care planning.

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