After adjusting for age, BMI, duration of infertility, history of OC treatment, AMH, basal FSH, basal LH, FAI, HCY, and TG, as these factors were statistically different between the two groups and were reported to be associated with the clinical pregnancy rate in IVF/ICSI-ET before, there was no statistical difference in the clinical pregnancy rate between the two groups either (as shown in Supplementary Table 3). This evidence concerns the gene PLOD1 and Infertility.