Study Evaluating the Efficacy of Maintenance Olaparib and Cediranib or Olaparib Alone in Ovarian Cancer Patients

Official Title

International Phase III Randomised Study to Evaluate the Efficacy of Maintenance Therapy With Olaparib and Cediranib or Olaparib Alone in Patients With Relapsed Ovarian Cancer Following a Response to Platinum-based Chemotherapy


ICON 9 will assess the efficacy, safety and tolerability of maintenance olaparib in combination with cediranib compared to maintenance olaparib alone following a response to platinum-based chemotherapy in women with relapsed platinum-sensitive ovarian, fallopian tube or peritoneal cancer. Prognostic and predictive factors will be studied from tumour and blood samples.

Trial Description

Primary Outcome:

  • Progression free survival (PFS) measured from the date of randomisation to the date of objective progression (investigator assessed using RECIST v1.1) or date of death from any cause (in the absence of progression)
  • Overall survival (OS) measured from the date of randomisation to the date of death from any cause
Secondary Outcome:
  • Toxicity
  • PFS and OS measured from the time of starting chemotherapy
  • Adherence to maintenance therapy- compliance and dose reductions and interruptions
  • TSST (the time from randomisation to start of second subsequent therapy or death)
  • Quality of life using EORTC QLQ C30
  • Quality of life using EORTC QLQ OV28
  • Cost effectiveness using EQ-5D-5L for economic evaluation
  • Progression free survival by CA125 - GCIG criteria
  • VIII. Response rate (RECIST v1.1 and/or CA125) at 16 weeks of treatment in patients who had RECIST v1.1 measurable disease or elevated CA125 at randomisation. RECIST measurements will be based on investigator assessment not central review
ICON9 is an international multicentre randomised, phase III trial assessing maintenance treatment with olaparib and cediranib or olaparib alone in women with relapsed ovarian cancer whose disease progressed more than 6 months after first line chemotherapy. Women whose disease responds to platinum chemotherapy following 3 to 4 cycles can be registered for collection of germline BRCA test results if known, and somatic BRCA testing of archival tumour specimens or secondary debulking tissue if required. Patients who have completed treatment and whose disease has responded (partial or complete) to a minimum of 4 cycles of platinum based chemotherapy will be randomised to maintenance treatment of either olaparib and cediranib or olaparib alone. The maintenance regimen may be continued beyond radiological progression until trial closure if the patient is deemed to still be deriving clinical benefit, but must be discontinued once subsequent treatment is instituted.

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Canadian Cancer Society

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