PLOD1 and hypogonadotropic hypogonadism: A consensus agreement was reached for the following suggestions: patient with hypogonadotropic hypogonadism (100%), advanced age of the patient (80.8%), insufficient or inadequate response during first stimulation (76.9%), stagnant E2 level (75.0%), stagnant follicular growth (75.0%), LH level <1.2 ng/ml during stimulation (70.6%) and suspicion of FSH receptor polymorphism (67.3%).