Due to a change in the development program, the study was closed prematurely.

The primary objective of this study is to describe the efficacy of vilaprisan in subjects with uterine fibroids compared to ulipristal.

The secondary objective of this study is to evaluate the efficacy and safety of different treatment regimens of vilaprisan in subjects with uterine fibroids.

Inclusion Criteria:

• Women, 18 years or older at the time of Visit 1
• Diagnosis of uterine fibroid(s) documented by ultrasound at screening with at least 1 fibroid with largest diameter more than 30 mm and less than 120 mm
• Heavy menstrual bleeding (HMB) >80.00 mL documented by menstrual pictogram (MP) in a bleeding episode period during the screening period
• Use of an acceptable non-hormonal method of contraception
• An endometrial biopsy performed during the screening period, without significant histological disorder such as endometrial hyperplasia (including simple hyperplasia) or other significant endometrial pathology

Exclusion Criteria:

• Pregnancy or lactation (less than 3 months since delivery, abortion, or lactation before start of treatment)
• Hypersensitivity to any ingredient of the study drugs
• Hemoglobin values ≤6 g/dL or any condition requiring immediate blood transfusion (subjects with hemoglobin values ≤10.9 g/dL will be recommended to use iron supplementation)
• Any diseases, conditions, or medications that can compromise the function of the body systems and could result in altered absorption, excessive accumulation, impaired metabolism, or altered excretion of the study drug including
• Abuse of alcohol, drugs, or medicines (eg: laxatives)
• Undiagnosed abnormal genital bleeding
• Any diseases or conditions that might interfere with the conduct of the study or the interpretation of the results

Availability of this study's data will later be determined according to Bayer's commitment to the EFPIA/PhRMA "Principles for responsible clinical trial data sharing". This pertains to scope, timepoint and process of data access. As such, Bayer commits to sharing upon request from qualified researchers patient-level clinical trial data, study-level clinical trial data, and protocols from clinical trials in patients for medicines and indications approved in the US and EU as necessary for conducting legitimate research. This applies to data on new medicines and indications that have been approved by the EU and US regulatory agencies on or after January 01, 2014.

Interested researchers can use www.vivli.org to request access to anonymized patient-level data and supporting documents from clinical studies to conduct research. Information on the Bayer criteria for listing studies and other relevant information is provided in the member section of the portal.

With protocol version 5.0 the blinded study arms A3 and B were converted to one open-label study arm called A3/B.