OBJECTIVE: We sought to determine if genetic polymorphisms in the aryl hydrocarbon receptor signaling pathway are associated with menopausal hot flashes via hormone levels. STUDY DESIGN: Women (n = 639) aged 45-54 years completed a study survey and provided blood for genetic and hormone analyses. The associations were analyzed using multivariable logistic regression and generalized linear models. RESULTS: Women carrying CYP1B1 (rs1800440) GG genotype had 3-fold greater odds of experiencing hot flashes for ≥1 year compared to the AA genotype (adjusted odds ratio [OR], 3.05; 95% confidence interval [CI], 1.12-8.25). Adding serum estradiol concentrations to the confounder-adjusted model resulted in a nonsignificant association (adjusted OR, 2.59; 95% CI, 0.91-7.18). Carriers of both CYP1B1 (rs1800440) G and CYP1B1 (rs1058636) G alleles had higher odds of experiencing hot flashes for ≥1 year compared to women homozygous for the major alleles (adjusted OR, 1.77; 95% CI, 1.06-2.96), even after adjustment for serum estradiol. CONCLUSION: CYP1B1 is associated with menopausal hot flashes via pathways that may involve changes in serum estradiol concentration.
OBJECTIVE: We sought to determine if genetic polymorphisms in the aryl hydrocarbon receptor signaling pathway are associated with menopausal hot flashes via hormone levels. STUDY DESIGN:Women (n = 639) aged 45-54 years completed a study survey and provided blood for genetic and hormone analyses. The associations were analyzed using multivariable logistic regression and generalized linear models. RESULTS:Women carrying CYP1B1 (rs1800440) GG genotype had 3-fold greater odds of experiencing hot flashes for ≥1 year compared to the AA genotype (adjusted odds ratio [OR], 3.05; 95% confidence interval [CI], 1.12-8.25). Adding serum estradiol concentrations to the confounder-adjusted model resulted in a nonsignificant association (adjusted OR, 2.59; 95% CI, 0.91-7.18). Carriers of both CYP1B1 (rs1800440) G and CYP1B1 (rs1058636) G alleles had higher odds of experiencing hot flashes for ≥1 year compared to women homozygous for the major alleles (adjusted OR, 1.77; 95% CI, 1.06-2.96), even after adjustment for serum estradiol. CONCLUSION:CYP1B1 is associated with menopausal hot flashes via pathways that may involve changes in serum estradiol concentration.
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