In the present study, transient prolactin elevation was the second common event and found in 12 of 57 patients in the 5 μg group, 5 of 57 in the 2.5 μg group and 2 of 27 in the placebo group, although gynecomastia and galactorrhoea were not reported. The gene discussed is PRL; the disease is Gynecomastia.