Female patients between the ages of 18 to 45 years (inclusive). Suitable veins for cannulation or repeated venipuncture. Body mass index (BMI) between 18 and 40 kg/m2 (inclusive). A diagnosis of polycystic ovary disease. Amenorrhea or oligomenorrhea (defined as ≤ 6 menses per year). Negative serum pregnancy test at screening. Negative urine pregnancy test before randomisation. Not be breast-feeding. Not have been pregnant within the 6 months prior to screening.