Weiss, Christian and Arnold, Dirk and Dellas, Kathrin and Liersch, Torsten and Hipp, Matthias and Fietkau, Rainer and Sauer, Rolf and Hinke, Axel and Roedel, Claus (2010) PREOPERATIVE RADIOTHERAPY OF ADVANCED RECTAL CANCER WITH CAPECITABINE AND OXALIPLATIN WITH OR WITHOUT CETUXIMAB: A POOLED ANALYSIS OF THREE PROSPECTIVE PHASE I-II TRIALS. INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS, 78 (2). pp. 472-478. ISSN 0360-3016, 1879-355X
Full text not available from this repository. (Request a copy)Abstract
Purpose: A pooled analysis of three prospective trials of preoperative radiochemotherapy (RCT) for rectal cancer by using oxaliplatin and capecitabine with or without cetuximab was performed to evaluate the impact of additional cetuximab on pathologic complete response (pCR) rates and tumor regression (TRG) grades. Methods and Materials: Of 202 patients, 172 patients met the inclusion criteria (primary tumor stage II/III, M0). All patients received concurrent RCT, and 46 patients received additional cetuximab therapy. A correlation of pretreatment clinicopathologic factors and cetuximab treatment with early pCR rates (TRG > 50%) was performed with univariate and multivariate analyses. Toxicity data were recorded for all patients. Results: Of 172 patients, 24 (14%) patients achieved a pCR, and 84 of 172 (71%) patients showed a TRG of >50% in the surgical specimen assessment after preoperative treatment. Age, gender, and TIN stages, as well as localization of the tumor, were not associated with pCR or good TRG. The pCR rate was 16% after preoperative RCT alone and 9% with concurrent cetuximab therapy (p = 0.32). A significantly reduced TRG of >50% was found after RCT with cetuximab compared to RCT alone (p = 0.0035). This was validated by a multivariate analysis with all available clinical factors (p = 0.0037). Acute toxicity and surgical complications were not increased with additional cetuximab. Conclusions: Triple therapy with RCT and cetuximab seems to be feasible, with no unexpected toxicity. Early response assessment (TRG), however, suggests subadditive interaction. A longer follow-up (and finally randomized trials) is needed to draw any firm conclusions with respect to local and distant failure rates. (C) 2010 Elsevier Inc.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GROWTH-FACTOR-RECEPTOR; SQUAMOUS-CELL CARCINOMA; RADIATION-THERAPY; CHEMORADIATION; CHEMORADIOTHERAPY; COMBINATION; EXPRESSION; RADIOCHEMOTHERAPY; CHEMOTHERAPY; MULTICENTER; Cetuximab; Oxaliplatin; Capecitabine; Rectal cancer; Radiochemotherapy |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Strahlentherapie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Jul 2020 10:10 |
| Last Modified: | 09 Jul 2020 10:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24081 |
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