Safety, Tolerability and Pharmacokinetics of Single Rising Oral Doses of BI 113823 Powder in Bottle (PiB) and Tablet in Healthy Male Volunteers

Investigation of Safety, Tolerability and Pharmacokinetics of Single Rising Oral Doses of 5 to 800 mg BI 113823 Powder in Bottle (PiB) and Tablet Administered to Healthy Male Volunteers in a Partially Randomised and Double Blinded, Placebo Controlled Phase I Trial. Including Intra-individual Open Comparisons of PiB and Tablet (Fasted and Fed).

To investigate the safety, tolerability, and pharmacokinetics incl. dose proportionality of BI 113823, as well as the relative bioavailability of PiB vs. tablet and tablet fasted vs. fed (food effect for the tablet).

Inclusion Criteria:

1. Healthy males according to the following criteria: Based upon a complete medical history, including the physical examination, vital signs (BP, PR), 12-lead ECG, clinical laboratory tests
2. Age ≥18 and Age ≤45 years
3. BMI ≥18.5 and BMI ≤29.9 kg/m2 (Body Mass Index)
4. Signed and dated written informed consent prior to admission to the study in accordance with GCP and the local legislation

Exclusion Criteria:

1. Any finding of the medical examination (including BP, PR and ECG) deviating from normal and of clinical relevance
2. Any evidence of a clinically relevant concomitant disease
3. Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
4. Surgery of the gastrointestinal tract (except appendectomy)
5. Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
6. History of relevant orthostatic hypotension, fainting spells or blackouts
7. Chronic or relevant acute infections
8. History of relevant allergy/hypersensitivity (including allergy to drug or its excipients)
9. Intake of drugs with a long half-life (> 24 hours) within at least one month or less than 10 half-lives of the respective drug prior to administration
10. Use of drugs which might reasonably influence the results of the trial or that prolong the QT/QTc interval based on the knowledge at the time of protocol preparation within 10 days prior to administration
11. Participation in another trial with an investigational drug within two months prior to administration or during the trial
12. Smoker (> 10 cigarettes or > 3 cigars or > 3 pipes/day)
13. Inability to refrain from smoking on trial days
14. Alcohol abuse (more than 30 g/day)
15. Drug abuse
16. Blood donation (more than 100 mL within four weeks prior to administration)
17. Excessive physical activities (within one week prior to administration)
18. Any laboratory value outside the reference range that is of clinical relevance
19. Inability to comply with dietary regimen of trial site
20. Bradycardia < 50/min, PR interval > 200 ms, QRS interval > 110 ms, QTcB > 450 ms, or QT (uncorrected) > 470 ms or any other relevant ECG findings at screening
21. A history of additional risk factors for Torsades des Pointes (e.g., heart failure, hypokalemia, family history of Long QT Syndrome)