Patients with hypogonadism were older (62 ± 15 vs. 57 ± 15 years, <i>p</i> < 0.001) and had higher prolactin levels (22 [13-36] vs. 14 [10-18] ng/mL, <i>p</i> = 0.002). The gene discussed is PRL; the disease is hypogonadism.