A total of 456 patients whose ovarian cancer had recurred were enrolled in the trial in 63 centres from the UK, Canada, Australasia and Spain. They were randomised to receive platinum-based chemotherapy together with a placebo (the reference arm of the trial), or 20 mg a day of cediranib during chemotherapy followed by placebo for 18 months (concurrent arm of the trial), or 20 mg a day of cediranib during chemotherapy followed by cediranib as a maintenance treatment (maintenance arm).
"ICON6 has a three-arm design in which the effect of cediranib given with chemotherapy and continued as maintenance can be compared with standard chemotherapy. This is the first trial to have demonstrated a benefit of concurrent cediranib with chemotherapy, as well as demonstrating an additional benefit with maintenance cediranib," he said.
An increased survival time of nearly three months is significant in this group of patients. Prof Ledermann explained: "In previous ovarian cancer trials any improvement seen with each new treatment has been incremental. Survival has improved through sequential use of drugs. Most of the recent positive trials have shown an improvement in progression-free survival. Trials showing an improvement in overall survival are uncommon. Cediranib produces an incremental improvement in progression-free survival and an incremental improvement in overall survival. Although the average improvement in overall survival is 2.7 months, some patients will see a much more substantial benefit."
ECCO president, Professor Cornelis van de Velde, commented: "These are important resul
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ECCO-the European CanCer Organisation