CYP19A1 and female infertility: A positive association was also encountered for carriers of the C allele in CYP19A1 along with null genotypes in GTSM1 (OR 11.979; 95% CI (4.570–31.400; p < 0.001) or GSTT1 (OR 13.169; 95% CI (4.518–38.380; p < 0.001), as well as we found an increase in female infertility risk for carriers CYP19A1 TT genotype, for individuals with GSMT1 null genotypes (OR 27.857; 95% CI (7.283–106.551; p < 0.001) or GSTT1 null genotypes (OR 9.471; 95% CI (3.086–29.067; p < 0.001).