PLOD1 and Infertility: There were no statistically significant differences in the mean age, types of infertility, duration of infertility, BMI, basal LH, E2, P4 level, stimulation duration of recombinant human follicle-stimulating hormone (rhFSH), total rhFSH, LH level on trigger day, and method of fertilization between the two groups (all P > 0.05).