alexa Phase 3 randomised study of canfosfamide (Telcyta, TLK286) versus pegylated liposomal doxorubicin or topotecan as third-line therapy in patients with platinum-refractory or -resistant ovarian cancer.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Clinical & Experimental Pharmacology

Author(s): Vergote I, Finkler N, del Campo J, Lohr A, Hunter J,

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Abstract RATIONALE: Canfosfamide HCl (CAN) is a glutathione analogue prodrug that is activated by glutathione S-transferase P1-1 and induces apoptosis. CAN is synergistic in vitro with carboplatin, paclitaxel and anthracyclines. METHODS: Patients with platinum-refractory or -resistant ovarian cancer (OC) who had progressed on second-line therapy with pegylated liposomal doxorubicin (PLD) or topotecan (TOPO), were randomised between CAN 1000 mg/m(2) IV q 3 weeks or to either PLD 50mg/m(2) IV q 4 weeks or TOPO 1.5mg/m(2) IV d1-5 q 3 weeks. RESULTS: About 461 patients were randomised after stratification for ECOG performance status, prior therapy, and bulky (>5 cm) disease. Groups were well balanced. In the control arm 58\% and 42\% were treated with PLD and TOPO, respectively. CAN was well tolerated with the most common grade 3-4 toxicities of 5\% anaemia, 4\% neutropaenia (no febrile neutropaenia), 4\% thrombocytopaenia, and 7\% vomiting. Progression-free survival (PFS) and overall survival (OS) were significantly higher in the control arm (p<0.001 and p<0.01, respectively). In a subgroup analysis PFS and OS tended to be higher with PLD than with TOPO. CONCLUSION: CAN was well tolerated. This is the first randomised study showing an increased OS with third-line therapy. This might have important consequences for other recurrent OC trials. This article was published in Eur J Cancer and referenced in Journal of Clinical & Experimental Pharmacology

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