PLOD1 and Infertility: Baseline characteristics, including age, infertility duration, BMI, and basal hormones (FSH, LH, E2, P), remained comparable (F = 0.03-2.77, P >0.05), while parity (F = 3.87, P < 0.05) and infertility types (χ2=7.62, P < 0.05) exhibited significant differences, as shown in Table 1.