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- W2140183817 abstract "Background and Purpose We wanted to evaluate the efficacy, defined as 2-year disease-free survival (DFS), and safety of bevacizumab/chemoradiation in preoperative and adjuvant settings for patients with stage II/III rectal cancer. Patients and Methods Eligible patients had stage II/III rectal adenocarcinoma, Eastern Cooperative Oncology Group performance status (ECOG PS) 0-1, and adequate organ function, and received preoperative (cohort A) or adjuvant (cohort B) treatment at physician discretion. Patients received 5-fluorouracil (5-FU) as an intravenous infusion (IVCI) 225 mg/m2/d on days 1-42, bevacizumab 5 mg/kg intravenously (I.V.) on days 1 and 15 (cohort A), or every 2 weeks (cohort B), with radiation therapy to 50.4 Gy. After surgery (cohort A) or chemoradiation (cohort B), FOLFOX6 (5-fluorouracil, leucovorin, oxaliplatin) and bevacizumab were administered for 4 months and then bevacizumab was given alone for up to 1 year. Results Sixty-six patients (cohort A = 35; cohort B = 31) were enrolled from August 2006-April 2009: median age was 57 years; male patients, 62%; ECOG PS 0, 75%; stage II/III, 31%/69%. In cohort A, the complete pathologic response (pCR) rate was 29% (11% microscopic residual disease, 49% gross disease). Four patients did not undergo surgery (toxicity, 2 patients; progressive disease, 1 patient; patient decision, 1 patient). One- and 2-year DFS for cohorts A/B were 85%/not reached and 97%/89%, respectively (median survival not reached for either cohort). Frequent grade 3/4 toxicity included diarrhea (A cohort, 14%; B cohort, 29%), neutropenia (A cohort, 14%, B cohort, 23%), mucositis (A cohort, 23%, B cohort, 0%), and fatigue (A cohort, 6%, B cohort, 10%). Other serious toxicity included bowel perforation and pelvic infection (cohort A, 1 patient each), bowel perforation (2 patients), anal wound dehiscence (1 patient), perianal infection (2 patients), and rectovaginal fistula (1 patient) (cohort B), without treatment-related death in either cohort. Conclusions Bevacizumab can be added to standard preoperative and adjuvant chemoradiation in most patients with expected and manageable toxicity and may increase treatment efficacy." @default.
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- W2140183817 date "2012-03-01" @default.
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- W2140183817 title "Phase II Study of Bevacizumab and Chemoradiation in the Preoperative or Adjuvant Treatment of Patients With Stage II/III Rectal Cancer" @default.
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- W2140183817 doi "https://doi.org/10.1016/j.clcc.2011.04.002" @default.
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