A Study to Test Whether Multiple Doses of BI 456906 Have an Effect on Cardiac Safety in People With Overweight or Obesity

Inclusion Criteria: 1. Otherwise 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 (blood pressure (BP), pulse rate (PR)), 12-lead electrocardiogram (ECG), and clinical laboratory tests 2. Age of 18 to 55 years (inclusive) 3. Body mass index (BMI) of 27.0 to 39.9 kg/m2 (inclusive) and body weight \> 70 kg 4. Signed and dated written informed consent in accordance with the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use-Good Clinical Practice (ICH-GCP) and local legislation prior to admission to the trial 5. Female subjects who meet any of the following criteria for a highly effective contraception from at least 7 days before the first administration of trial medication until 28 days after trial completion: * Use of combined (estrogen and progestogen containing) hormonal contraception that prevents ovulation (oral, intravaginal or transdermal). In case of oral contraception a barrier method should be used in addition. * Use of progestogen-only hormonal contraception that inhibits ovulation (oral, injectable or implantable). In case of oral contraception a barrier method should be used in addition. * Use of intrauterine device (IUD) or intrauterine hormone-releasing system (IUS) * Sexually abstinent * A vasectomised sexual partner who received medical assessment of the surgical success (documented absence of sperm) and provided that partner is the sole sexual partner of the trial participant * Surgically sterilised (including hysterectomy) * Postmenopausal, defined as no menses for 1 year without an alternative medical cause (in questionable cases a blood sample with levels of Follicle Stimulating Hormone (FSH) above 40 U/L and estradiol below 30 ng/L is confirmatory) Exclusion Criteria: 1. Any finding in the medical examination (including BP, PR or ECG) deviating from normal and assessed as clinically relevant by the investigator 2. Repeated measurement of systolic blood pressure outside the range of 90 to 140 millimetre of mercury (mmHg), diastolic blood pressure outside the range of 50 to 90 mmHg, or pulse rate outside the range of 50 to 90 beats per minute (bpm) 3. Any laboratory value outside the reference range that the investigator considers to be of clinical relevance and, in particular: * Alanine aminotransferase (ALT) above upper limit of normal (ULN) + 20% * Aspartate aminotransferase (AST) above ULN + 20% * Gamma glutamyltransferase (GGT) above ULN + 20% * Lipase or amylase above ULN + 20% * Bilirubin above 1.2x ULN (except for cases of Gilbert's Syndrome) * eGFR \< 60 mL/min/1.73 m² 4. Any evidence of a concomitant disease assessed as clinically relevant by the investigator 5. Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders 6. History of either chronic or acute pancreatitis 7. Diseases of the central nervous system (including but not limited to any kind of seizures or stroke), and other relevant neurological or psychiatric disorders 8. History of relevant orthostatic hypotension, fainting spells, or blackouts Further exclusion criteria apply