In the case of CYP1A1–2 rs1048943 A>G, no statistically significant differences were found between groups (p = 0.075); both control subjects and larynx cancer patients presented high rates of SNP homozygosity for GG genotype: 22 (95.65%) control subjects and 64 (80%) cancer patients, respectively. The gene discussed is CYP1A1; the disease is cancer.