To assess safety, tolerability, pharmacokinetics, and pharmacodynamics of BIRT 2584 XX in single rising oral doses of 5 mg to 700 mg in a polyethylene glycol 400 (PEG 400) solution in healthy subjects

Inclusion Criteria:

• Healthy male subjects as determined by results of screening
• Signed written informed consent in accordance with Good Clinical Practice (GCP) and local legislation
• Age >=18 and <=50 years
• BMI >=18.5 and <=29.9 kg/m2

Exclusion Criteria:

• Any finding of the medical examination (including blood pressure, pulse rate, and electrocardiogram) deviating from normal and of clinical relevance
• Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunologic, haematological, oncological or hormonal disorders
• Surgery of gastrointestinal tract (except appendectomy)
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
• Relevant history of orthostatic hypotension, fainting spells or blackouts
• Chronic or relevant acute infections
• History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
• Intake of drugs with a long half-life (> 24 hours) (< 1 month prior to administration or during the trial)
• Use of any drugs, which might influence the results of the trial, (< 10 days prior to study drug administration or expected during the trial)
• Participation in another trial with an investigational drug (< 2 months prior to administration or expected during trial)
• Smoker (> 10 cigarettes or >3 cigars or >3 pipes/day)
• Alcohol abuse (> 60 g/day)
• Drug abuse
• Blood donation or loss > 400 mL, < 1 month prior to administration or expected during the trial
• Clinically relevant laboratory abnormalities
• Any ECG value outside of the reference range and of clinical relevance including, but not limited to QRS interval > 110 ms or QT interval, Bazett correction (QTcB) > 450 ms or QT interval >500 ms
• Inability to comply with dietary regimen of study centre
• Inability to comply with investigator's instructions