PLOD1 and Infertility: In the present study, it was found that there was no significant difference in age, BMI, infertility duration, basal FSH and estrogen levels, total doses of gonadotropin used during the controlled ovarian hyperstimulation process, endometrial thickness and estrogen levels on the trigger day, as well as the number of oocytes retrieved in the same ovulation protocol between the two groups with the LH/FSH ratio bounded by 2 (Table 1, P > 0.05).