A Study in Healthy People to Test if Taking Different Formulations of BI 425809 Tablets Influences the Amount of BI 425809 in the Blood

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 (Blood Pressure (BP), Pulse Rate (PR)), 12-lead Electrocardiogram (ECG), and clinical laboratory tests * Age of 18 to 55 years (inclusive) * Body Mass Index (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 * Male subjects, or female subjects who meet any of the following criteria from at least 30 days before the first administration of trial medication until 30 days after trial completion: * Use of adequate contraception, e.g. any of the following methods plus condom: \--- implants, injectables, combined oral or vaginal contraceptives, intrauterine device * Sexually abstinent * A vasectomised sexual partner (vasectomy at least 1 year prior to enrolment) * Surgically sterilised (including hysterectomy) * Postmenopausal, defined as at least 1 year of spontaneous amenorrhea (in questionable cases a blood sample with levels of FSH above 40 U/L and estradiol below 30 ng/L is confirmatory) Exclusion Criteria: * Any finding in the medical examination (including Blood Pressure (BP), Pulse Rate (PR) or Electrocardiogram (ECG)) deviating from normal and assessed as clinically relevant by the investigator * Repeated measurement of systolic blood pressure outside the range …