5032 Background: DMXAA (AS1404) is a small-molecule vascular disrupting agent, which in animal models shows additive or supra-additive effects with cytotoxics, including taxanes and platinum agents. This phase II study evaluated DMXAA in combination with carboplatin and paclitaxel in recurrent platinum-sensitive ovarian cancer patients with a progression-free interval of more than 6 months after response to platinum-based chemotherapy. Methods: Patients had first diagnosed disease FIGO stage Ic-IV, with presence of recurrent disease confirmed by imaging. Patients were randomised 1:1 to receive up to 6 cycles of carboplatin (AUC 6 mg/ml × min) and paclitaxel (175 mg/m2) with or without DMXAA (1200 mg/m2). Safety assessments included EKG, adverse events, laboratory screens and ophthalmic exam. Efficacy endpoints are objective response rates, time to progression, duration of response and stable disease, and median and 1-year survival. Results: 55 patients have been enrolled to date from a planned total of ∼70. Initial safety findings in the two arms are comparable. Preliminary investigator-assessed RECIST response data show the following unconfirmed outcomes: of 17 patients in the DMXAA arm, there are 10 with partial responses (PRs), 7 with stable disease (SD) and 0 with progressive disease (PD); of 14 patients in the control arm, there are 8 PRs, 6 SDs and 0 PDs. Conclusions: Initial safety findings suggest that addition of DMXAA to standard doses of carboplatin and paclitaxel did not add significantly to toxicity. Efficacy assessments are ongoing to determine the value of the triple combination in recurrent ovarian cancer. No significant financial relationships to disclose.
