Irinotecan combined with bolus 5-fluorouracil and folinic acid Nordic schedule as first-line therapy in advanced colorectal cancer. |
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Authors: | B Glimelius R Ristam?ki M Kjaer P Pfeiffer T Skovsgaard K M Tveit T Linné J E Fr?din B Boussard D Oulid-A?ssa S Pyrh?nen |
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Affiliation: | Department of Oncology, Radiology and Clinical Immunology, Uppsala University Hospital, Sweden. bengt.glimelius@onkologi.uu.se |
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Abstract: | BACKGROUND: This multicentre phase II study evaluated the efficacy and safety of irinotecan combined with the Nordic schedule of 5-fluorouracil (5-FU) and folinic acid (FA) as first-line therapy in patients with advanced colorectal cancer. PATIENTS AND METHODS: Seventy-four patients with measurable disease and a WHO performance status of 2 or less were treated with irinotecan 210 mg/m(2) as a 30-90 min intravenous infusion on day 1, followed by 5-FU 500 mg/m(2) and FA 60 mg/m(2) bolus on days 1 and 2, every 2 weeks, until disease progression or unacceptable toxicity. The primary end point was the objective response rate. RESULTS: Twenty-nine out of 68 evaluable patients achieved a complete (n = 7) or partial (n = 22) response, leading to an overall response rate of 43% [95% confidence interval (CI) 31% to 55%]. The median duration of response was 10 months. The estimated median time to progression and survival were 6.4 months (95% CI 5.4-9.0) and 15.6 months (95% CI 13.3-19.0), respectively, in the intention-to-treat population. A total of 860 cycles were administered to 74 patients. Neutropenia was the main adverse event with grade 3-4 toxicity in 66% of patients and 17.5% of cycles. Grade 3-4 non-haematological toxicities were infrequent and included diarrhoea in 16% of patients and 2% of cycles and nausea/vomiting in 10% of patients and 1% of cycles. CONCLUSIONS: Irinotecan combined with the bolus Nordic schedule of 5-FU/FA is active in advanced colorectal cancer with an easily managed safety profile which ensures good schedule compliance. The low incidence of grade 3-4 non-haematological toxicity justifies the further evaluation of this combination in the context of randomised clinical trials. |
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Keywords: | chemotherapy colorectal cancer irinotecan Nordic schedule |
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