What is CYP1A1 (rs1048943) and Why Does the Cellular Zoomer Test for It?

Phase I detox enzyme variant

CYP1A1 (rs1048943) is a single-nucleotide change in the CYP1A1 gene, which encodes a cytochrome P450 enzyme involved in phase I oxidation of many environmental chemicals and some hormones. Testing this variant helps show inherited differences in how a person may metabolize certain compounds, adding genetic context to measured oxidative and detox markers.

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CYP1A1 (rs1048943)

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About CYP1A1 (rs1048943)

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About CYP1A1 (rs1048943)

Overview and History

CYP1A1 belongs to the cytochrome P450 family of enzymes that perform phase I oxidation reactions—chemical steps that modify environmental chemicals, pollutants, and endogenous molecules. The rs1048943 site is a common single-nucleotide polymorphism (SNP) that results in an amino-acid change in the enzyme protein and has been studied for its effects on enzyme activity. Historically, rs1048943 has been investigated because alterations in CYP1A1 function can change how substrates are transformed into metabolites. These biochemical shifts can affect downstream pathways such as reactive intermediate formation, hormone metabolism, and interactions with antioxidant and conjugation systems, making the variant relevant to studies of metabolic and oxidative patterns.

Interpreting Highs and Lows

Genotype patterns associated with increased CYP1A1 activity may suggest greater phase I oxidation capacity for specific substrates, which can change the balance of metabolites and sometimes raise markers tied to reactive intermediates or oxidative load. Genotypes associated with lower predicted activity suggest relatively reduced phase I turnover for the same substrates, which can alter the profile of detox intermediates and downstream conjugation needs. Either pattern requires interpretation alongside other Cellular Zoomer results (oxidative damage markers, glutathione turnover, phase II indicators, nutrient cofactors) and clinical factors like exposures, medication use, and lifestyle to understand functional impact.

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Including CYP1A1 (rs1048943) links inherited phase I metabolic capacity with real-time urine and saliva markers of oxidative stress, detox intermediates, and nutrient-dependent pathways. This genetic data helps clinicians contextualize organic acid and oxidative markers and tailor follow-up testing or monitoring based on likely metabolic patterns.

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CYP1A1 (rs1048943) FAQs

What is CYP1A1 (rs1048943) and why is it important?

rs1048943 is a single-letter genetic variant in the CYP1A1 gene, which codes for a liver enzyme that alters certain environmental chemicals and some hormones. The change can affect how the enzyme processes specific substances, which in turn can influence the mix of metabolites and oxidative byproducts seen on biochemical testing. Knowing this variant adds inherited context to lab patterns linked to detox and redox balance.

What does it mean if my CYP1A1 (rs1048943) levels are low?

Genetic testing reports allele status rather than blood levels. If your genotype predicts lower CYP1A1 activity, it suggests reduced phase I oxidation for certain substrates compared with other genotypes. That pattern can shift downstream metabolite profiles and is best interpreted with other Cellular Zoomer markers and exposure history to understand functional consequences.

What does it mean if my CYP1A1 (rs1048943) levels are high?

If your genotype predicts higher CYP1A1 activity, it may indicate relatively greater phase I conversion of specific compounds, which can increase production of downstream metabolites or reactive intermediates in some contexts. Elevated functional activity should be interpreted alongside oxidative stress markers, phase II capacity, and clinical exposure information for a complete picture.

Why is this biomarker included in the Cellular Zoomer?

CYP1A1 (rs1048943) provides inherited information about phase I oxidation capacity that complements urine and saliva measures of oxidative damage, detox intermediates, and nutrient status. Combining genotype with real-time markers improves interpretation of metabolic patterns and helps personalize follow-up testing and monitoring plans.

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