Neoadjuvant Radiotherapy for Rectal Cancer: Meta-analysis of Randomized Controlled Trials View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2013-12

AUTHORS

Nuh N. Rahbari, Heike Elbers, Vasileios Askoxylakis, Edith Motschall, Ulrich Bork, Markus W. Büchler, Jürgen Weitz, Moritz Koch

ABSTRACT

BACKGROUND: Although neoadjuvant radiotherapy may improve local control of rectal cancer, its clinical value requires further evaluation as a result of potential side effects and advances in surgical technique. A meta-analysis was performed to assess effectiveness and safety of neoadjuvant radiotherapy in the management of rectal cancer. METHODS: The following databases were searched: the Cochrane Library, Biosis, Web of Science, Embase, ASCO Abstracts and WHO International Clinical Trials Registry Platform. Randomized controlled trials on the following comparisons were included: (1) neoadjuvant therapy versus surgery alone and (2) neoadjuvant chemoradiotherapy versus neoadjuvant radiotherapy. RESULTS: We identified 17 and 5 relevant trials that enrolled 8,568 and 2,393 patients, respectively. Neoadjuvant radiotherapy improved local control (hazard ratio 0.59; 95 % confidence interval 0.48-0.72) compared to surgery alone even after total mesorectal excision, whereas its benefit in overall survival just failed to reach statistical significance (0.93; 0.85-1.00). However, it was associated with increased perioperative mortality (1.48; 1.08-2.03), in particular if a dose of 5 Gy per fraction was administered (1.85; 1.23-2.78). Chemoradiotherapy improved local control as opposed to radiotherapy (0.53; 0.39-0.72), with no impact on perioperative outcome and long-term survival. CONCLUSIONS: Neoadjuvant radiotherapy improves local control in patients with rectal cancer, particularly when chemoradiotherapy is administered. The question if the use of more effective chemotherapy protocols improves overall survival warrants further investigation. More... »

PAGES

4169-4182

Identifiers

URI

http://scigraph.springernature.com/pub.10.1245/s10434-013-3198-9

DOI

http://dx.doi.org/10.1245/s10434-013-3198-9

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1010497514

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24002536


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