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    Preoperative downstaging chemoradiation with concurrent irinotecan and capecitabine in MRI-defined locally advanced rectal cancer: a phase I trial (NWCOG-2).

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    Authors
    Gollins, Simon W
    Myint, S
    Susnerwala, S
    Haylock, B
    Wise, M
    Topham, C
    Samuel, L
    Swindell, Ric
    Morris, J
    Mason, L
    Levine, Edward
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    Affiliation
    Department of Clinical Oncology, North Wales Cancer Treatment Centre, Rhyl LL18 5UJ, UK. simon.gollins@cd-tr.wales.nhs.uk
    Issue Date
    2009-09-15
    
    Metadata
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    Abstract
    BACKGROUND: The aim of this study was to investigate the safety of neoadjuvant chemoradiation using radiotherapy (RT) combined with concurrent capecitabine and irinotecan for locally advanced rectal cancer before surgery. METHODS: Forty-six patients were recruited and treated on the basis that MRI scanning had shown poor-risk tumours with threatening (< or =1 mm) or involvement of the mesorectal fascia. Conformal RT was given using 3 or 4 fields at daily fractions of 1.8 Gy on 5 days per week to a total dose of 45 Gy. Concurrently oral capecitabine was given twice daily throughout radiotherapy continuously from days 1 to 35 and intravenous irinotecan was given once per week during weeks 1 to 4 of RT. Dose levels were gradually escalated as follows. Dose level 1: capecitabine 650 mg m(-2) b.i.d. and irinotecan 50 mg m(-2); Dose level 2: capecitabine 650 mg m(-2) b.i.d. and irinotecan 60 mg m(-2); Dose level 3: capecitabine 825 mg m(-2) b.i.d. and irinotecan 60 mg m(2); Dose level 4: capecitabine 825 mg m(-2) b.i.d. and irinotecan 70 mg m(-2). RESULTS: Diarrhoea (grade 3, no grade 4) was the main serious acute toxicity with lesser degrees of fatigue, neutropenia, anorexia and palmar-plantar erythrodysesthesia. The recommended dose for future study was dose level 2 at which 3 of 14 patients (21%) developed grade 3 diarrhoea. Postoperative complications included seven pelvic or wound infections and two anastomotic and two perineal wound dehiscences. There were no deaths in the first 30 days postoperatively. Of 41 resected specimens, 11 (27%) showed a pathological complete response (pCR) and five (12%) showed an involved circumferential resection margin (defined as < or =1 mm). The 3-year disease-free survival (intent-to-treat) was 53.2%. CONCLUSION: In patients with poor-risk MRI-defined locally advanced rectal cancer threatening or involving the mesorectal fascia, preoperative chemoradiation based on RT at 45 Gy in 25 daily fractions over 5 weeks with continuous daily oral capecitabine at 650 mg m(-2) b.i.d. days 1-35 and weekly IV irinotecan at 60 mg m(-2) weeks 1-4, provides acceptable acute toxicity and postoperative morbidity with encouraging response and curative resection rates.
    Citation
    Preoperative downstaging chemoradiation with concurrent irinotecan and capecitabine in MRI-defined locally advanced rectal cancer: a phase I trial (NWCOG-2). 2009, 101 (6):924-34 Br. J. Cancer
    Journal
    British Journal of Cancer
    URI
    http://hdl.handle.net/10541/85195
    DOI
    10.1038/sj.bjc.6605258
    PubMed ID
    19690550
    Type
    Article
    Language
    en
    ISSN
    1532-1827
    ae974a485f413a2113503eed53cd6c53
    10.1038/sj.bjc.6605258
    Scopus Count
    Collections
    All Christie Publications
    Clinical Oncology

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