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Adjuvant chemotherapy in colorectal cancer: A joint analysis of randomised trials by the Nordic Gastrointestinal Tumour Adjuvant Therapy Group
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2005 (English)In: Acta Oncologica, ISSN 0284-186X, E-ISSN 1651-226X, Vol. 44, no 8, 904-912 p.Article in journal (Refereed) Published
Abstract [en]

Due to uncertainties regarding clinically meaningful gains from adjuvant chemotherapy after colorectal cancer surgery, several Nordic Groups in the early 1990s initiated randomised trials to prove or reject such gains. This report gives the joint analyses after a minimum 5-year follow-up. Between October 1991 and December 1997, 2 224 patients under 76 years of age with colorectal cancer stages II and III were randomised to surgery alone (n = 1 121) or adjuvant chemotherapy (n = 1 103) which varied between trials (5FU/levamisole for 12 months, n = 444, 5FU/leucovorin for 4-5 months according to either a modified Mayo Clinic schedule (n = 262) or the Nordic schedule (n = 397). Some centres also randomised patients treated with 5FU/leucovorin to ±levamisole). A total of 812 patients had colon cancer stage II, 708 colon cancer stage III, 323 rectal cancer stage II and 368 rectal cancer stage III. All analyses were according to intention-to-treat. No statistically significant difference in overall survival, stratified for country or region, could be found in any group of patients according to stage or site. In colon cancer stage III, an absolute difference of 7% (p = 0.15), favouring chemotherapy, was seen. The present analyses corroborate a small but clinically meaningful survival gain from adjuvant chemotherapy in colon cancer stage III, but not in the other presentations. © 2005 Taylor & Francis.

Place, publisher, year, edition, pages
2005. Vol. 44, no 8, 904-912 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-32755DOI: 10.1080/02841860500355900Local ID: 18681OAI: oai:DiVA.org:liu-32755DiVA: diva2:253578
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-12-13

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Starkhammar, HansAlbertsson, Maria

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