The purpose of this trial is to investigate the fate of the roniciclib (study drug) in the body in a so called mass-balance study. This means to investigate how the study drug is absorbed, distributed, broken down (metabolized) and removed (excreted or eliminated) from the body.

Inclusion Criteria:

• - Male or female subjects aged ≥18 years
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 - 2
• Subjects with advanced, histologically or cytologically confirmed solid tumors, refractory to any standard therapy, have no standard therapy available, or subjects must have actively refused any treatment which would be regarded standard, and / or if in the judgment of the investigator, experimental treatment is clinically and ethically acceptable
• Adequate bone marrow, liver, and renal functions as assessed by laboratory requirements to be conducted within 14 days prior to the first dose of study drug:

Exclusion Criteria:

• Previous deep vein thrombosis (within the last 6 months), arterial thrombotic events (including strokes), or pulmonary embolism
• History of cardiac disease: congestive heart failure New York Heart Association (NYHA) class III or IV, angina (within past 6 months prior to study entry), myocardial infarction, or cardiac arrhythmias requiring anti-arrhythmic therapy (beta blockers or digoxin are permitted)
• Anticancer chemotherapy or immunotherapy within 4 weeks of study entry. Mitomycin C or nitrosoureas should not be given within 6 weeks of study entry. Accepted exemptions are bisphosphonates, luteinising hormone releasing hormone (LHRH) agonists for prostate cancer, and mitotane for adrenal carcinoma.
• Radiotherapy within 3 weeks prior to the first dose of study drug. Palliative radiotherapy will be allowed
• Intake of strong CYP3A4 inhibitors (e.g., boceprevir, clarithromycin, conivaptan, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, mibefradil (withdrawn in the US), nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin and voriconazole) and strong CYP3A4 inducers (e.g., carbamazepine, phenytoin , rifampin and St. John's Wort)