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.

Inclusion Criteria:

• Part A: Healthy male subjects according to the assessment of the investigator, as based on a complete medical history including a physical examination, vital signs (Blood pressure (BP), Pulse rate (PR)), 12-lead Electrocardiogram (ECG), and clinical laboratory tests Part B: Healthy male and female (women of non-childbearing potential) subjects according to the assessment of the investigator, as based on a complete medical history including a physical examination, vital signs (BP, PR), 12-lead ECG, and clinical laboratory tests

• Part A: Age of 18 to 50 years (inclusive) Part B: Age of 18 to 55 years (inclusive)

• Part A: Body Mass Index (BMI) of 20.0 to 29.9 kg/m (inclusive) and body weight of at least 60 kg

• Signed and dated written informed consent in accordance with International Council for Harmonisation-Good Clinical Practice (ICH-GCP) and local legislation prior to admission to the trial

• Part B: For female trial participants: Female trial participants who meet any of the following criteria (women of non-childbearing potential):

  • Permanently sterilised (including hysterectomy, bilateral salpingectomy, or bilateral oophorectomy)
  • Postmenopausal, defined as no menses for at least 1 year without an alternative medical cause. In questionable cases a blood sample with FSH above 40 U/L and estradiol below 30 ng/L at screening is confirmatory

• Further inclusion criteria apply

Exclusion Criteria:

• Any finding in the medical examination (including BP, Pulse rate (PR) or ECG) deviating from normal and assessed as clinically relevant by the investigator
• Repeated measurement at screening of systolic blood pressure outside the range of 90 to 139 mmHg, diastolic blood pressure outside the range of 50 to 89 mmHg, or pulse rate outside the range of 50 to 90 bpm
• Any laboratory value outside the reference range that the investigator considers to be of clinical relevance
• Any evidence of a concomitant disease assessed as clinically relevant by the investigator
• Further exclusion criteria apply

Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization). For more details refer to: https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing

Outcome assessors may be unblinded upon request, except for Electrocardiogram (ECG) laboratory staff, who shall remain blinded throughout the study.