RONICICLIB / Placebo in Combination With Chemotherapy in Small Cell Lung Cancer

Patients will receive roniciclib treatment as a 3 days on / 4 days schedule off with two 2.5 mg tablets twice daily for a total dose of 10.0 mg/day during 6 cycles (21 days each) of chemotherapy with Carboplatin/etoposide or Cisplatin/etoposide and continue thereafter as monotherapy until tumor progression, unacceptable toxicity, death, consent withdrawal, or withdrawal from the study.

Patients will receive placebo treatment as a 3 days on / 4 days schedule off with two tablets twice daily during 6 cycles (21 days each) of chemotherapy with Carboplatin/etoposide or Cisplatin/etoposide and continue thereafter as monotherapy until tumor progression, unacceptable toxicity, death, consent withdrawal, or withdrawal from the study