alexa A phase II study of pegylated-camptothecin (pegamotecan) in the treatment of locally advanced and metastatic gastric and gastro-oesophageal junction adenocarcinoma.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Scott LC, Yao JC, Benson AB rd, Thomas AL, Falk S,

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Abstract PURPOSE: Combination chemotherapy results in a significant survival advantage in patients with advanced gastric cancer compared to best supportive care. Nevertheless, the prognosis remains poor with a median survival of 8-10 months. Topoisomerase-I inhibitors such as irinotecan have activity in advanced gastric cancer. Pegamotecan may offer significant advantages over other topoisomerase-I inhibitors due to its prolonged circulating half-life, tolerability and passive tumour accumulation. PATIENTS AND METHODS: This was a non-randomised, multi-centre, two-step Fleming design phase II study. Eligible patients with locally advanced (inoperable) or metastatic gastric or gastro-oesophageal adenocarcinoma, with measurable disease, ECOG performance status < or =2, with adequate haematological, renal and hepatic function, who had received < or =1 prior chemotherapy regimen for advanced disease, were treated with 7,000 mg/m(2) of pegamotecan as a 1-h infusion every 21 days until disease progression or unacceptable toxicity. The primary efficacy measure was the objective response rate. RESULTS: Five of the 35 patients recruited into this study had a partial response (14.3\%), with a median time to progression of 11.9 weeks (95\% CI: 6.6, 13.1), and median overall survival of 38.1 weeks (95\% CI: 29.0, 47.3). Grade 3/4 toxicities included neutropenia in 6 (17.1\%) patients, thrombocytopenia in 4 (11.4\%), fatigue in 8 (22.9\%), nausea in 6 (17\%), vomiting in 6 (17\%) and anorexia in 4 (11.4\%) patients. There were no episodes of febrile neutropenia and no toxic deaths. CONCLUSIONS: Pegamotecan has activity in this patient population and was generally well-tolerated. The favourable rate of haematological toxicities and diarrhoea compared with irinotecan in similar studies suggests that pegamotecan could be combined with other active agents in further studies in this disease. This article was published in Cancer Chemother Pharmacol and referenced in Journal of Nanomedicine & Nanotechnology

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