The study looked at how certain genetic variations in the CYP1A1 gene can affect the risk of developing lung cancer. By analyzing the Msp1 and Ile/Val genotypes in individuals with lung cancer and controls, the researchers found that having genotype C or Val/Val genotype increased the risk of lung cancer. Specifically, individuals with genotype C were 1.85 times more likely to develop lung cancer, while those with Val/Val genotype were 3.3 times more likely. People with both genotype C and Val/Val genotype were even more susceptible to lung cancer. This suggests that these genetic variations may play a role in increasing the risk of developing lung cancer.