CYP19A1 and Infertility: In the comparison of the distribution of CYP19A1 genotypes in cases and controls (Table 8), we found that the frequency of CYP19A1 TC/CC genotype was 68.6% in cases versus 40.4% of the controls; this shows a statistically significant association of CYP19A1 TC/CC genotype with infertility, despite of the cause (OR 4.232; 95% (2.710–6.609); p < 0.001)