8. Male or female patients. Women of childbearing potential* must be ready and able to use highly effective methods of birth control per International Conference on Harmonisation [ICH M3(R2)] in combination with male condom as "double barrier", during the trial and for at least 6 months after the end of treatment with BI 836880, that result in a low failure rate of less than 1% per year when used consistently and correctly. A list of contraception methods meeting these criteria is provided in the patient information.