Wednesday, May 31, 2023 The OV.26 (ICON9) study: An International Phase III Randomised Study to Evaluate the Efficacy of Maintenance Therapy with Olaparib and Cediranib or Olaparib Alone in Patients with Relapsed Platinum-sensitive Ovarian Cancer Following a Response to Platinum-Based Chemotherapy has permanently closed to accrual having met the accrual target for the trial with CCTG centres contributing 17 patients (5% of 335 total accrual). 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. For more information please visit the OV26 members trial page.