A Study in Healthy Men and Women Who Are Either Between 18 - 45 Years or Between 65 - 80 Years to Test How Different Doses of BI 474121 Are Tolerated

Safety, Tolerability and Pharmacokinetics of Multiple Rising Oral Doses of BI 474121 in Young and Elderly Healthy Male and Female Subjects (Double-blind, Randomised, Placebo-controlled, Parallel Group Design) and Evaluation of Midazolam Interaction in Young Healthy Male and Female Subjects (Nested, Open, Fixed-sequence, Intra-individual Comparison)

The main objectives of this trial are to investigate safety and tolerability of BI 474121 in healthy male and female young and elderly subjects following oral administration of multiple rising doses per day over 14 days.

Inclusion Criteria:

• Healthy male or female 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
• Age of 18 to 45 years (inclusive) for young or 65 to 80 years (inclusive) for elderly healthy volunteers
• BMI of 18.5 to 29.9 kg/m2 (inclusive)
• Signed and dated written informed consent prior to admission to the study, in accordance with GCP and local legislation

Exclusion Criteria:

• Any finding in the medical examination (including BP, PR or ECG) deviating from normal and assessed as clinically relevant by the investigator
• Repeated measurement of systolic blood pressure outside the range of 100 to 140 mm Hg, diastolic blood pressure outside the range of 50 to 90 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
• Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
• Cholecystectomy or other surgery of the gastrointestinal tract that could interfere with the pharmacokinetics of the trial medication (except appendectomy or simple hernia repair)
• Diseases of the central nervous system (including but not limited to any kind of seizures or stroke), and other relevant neurological or psychiatric disorders
• History of relevant orthostatic hypotension, fainting spells, or blackouts
• A positive Poly-chain reaction (PCR) test for SARS-CoV-2 and clinical symptoms suggestive for this disease at screening or on Day -3
• Further exclusion criteria apply