Drug-drug Interaction Study: Influence of Vilaprisan on Pharmacodynamics (PD) and Pharmacokinetics (PK) of a Combined Oral Contraceptive (COC)

Inclusion Criteria: * Healthy female premenopausal subjects * Age: 18 to 35 years (inclusive) * Body mass index (BMI) : ≥18 and ≤30 kg/m² * Non-smoker for 3 months (former smokers who quit smoking \>3 months before the first study drug administration may be included) Exclusion Criteria: * Incomplete recovery from pre-existing disease for which it can be assumed that the absorption, distribution, excretion, and effect of the study drugs will not be normal * presence or history of thrombophlebitis, venous or arterial thrombotic/thromboembolic events (e.g. deep venous thrombosis, pulmonary embolism, myocardial infarction) or of a cerebrovascular accident