Although the frequency of the risk alleles A (rs1051730) and C (rs8034191) was higher among individuals with heavy tobacco intake (>40 pack-years), the differences did not reach statistical significance ( p = 0.11 and p = 0.10, respectively).
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Analysis of the Relationship Between <i>CHRNA</i>3/5 and <i>EPHX1</i> Polymorphisms to Tobacco Intake and Development of Chronic Obstructive Pulmonary Disease (COPD).
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The CHRNA3 variants (rs1051730 and rs8034191) showed a trend toward higher prevalence among individuals with heavy tobacco intake (>40 pack-years), though no significant allelic or genotypic differences were found between COPD and control groups ( p > 0.05).