Part A: The main objectives of this trial are to investigate safety, tolerability and pharmacokinetics (PK) of BI 3031185 in healthy male subjects following administration of multiple rising doses.
Part B: The main objectives of Part B of this trial are to investigate safety, tolerability, and pharmacokinetics (PK) of BI 3031185 in healthy male subjects and female subjects of non-childbearing potential following oral administration of multiple doses of BI 3031185.