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Ann Surg Oncol. 2014 Apr;21(4):1352-60. doi: 10.1245/s10434-013-3412-9. Epub 2013 Dec 4.

Analysis of bevacizumab-based preoperative radiochemotherapy in patients with locally advanced rectal cancer on surgery-associated spectrum of complications.

Author information

1
Department of Radiooncology Kiel/Luebeck, University of Kiel, Kiel, Germany, Kathrin.Dellas@uksh.de.

Abstract

BACKGROUND:

Preoperative radiochemotherapy (RCT) is a standard of care for patients with locally advanced rectal cancer (LARC; stages II and III). Results of our phase II study (BevXelOx-RT) have shown that this regimen is feasible but without a significant improvement of pathological complete response. Whether preoperatively administered bevacizumab, due to its specific toxicity profile, leads to increased rates of surgical complications is currently a subject for debate. This analysis focusses on the surgery-associated spectrum of complications.

METHODS:

Data from 62 patients with rectal cancer (uT3-4; N0/1, M0) of the phase II trial were analyzed. Patients received radiotherapy (50.4/1.8 Gy fractions), simultaneous bevacizumab 5 mg/kg (d1, d15, d29), and capecitabine 825 mg/m(2) twice daily (d1-14, d22-35), oxaliplatin 50 mg/m(2) (d1, d8, d22, d29). Four to six weeks after RCT, surgical resection was performed.

RESULTS:

Overall, 69/69 patients underwent surgery, and 66 (95.7 %) patients had R0 resection. Surgery was mainly conducted (in 66 %) by highly experienced surgeons (>20 resections of rectal cancer/year) with differences between the institutions due to the operative procedures but without effects on the rate of R0 resection or complications. The average duration of surgery was 239 min (±10). Frequency of multivisceral resections (11 %), intraoperative (8 %) and postoperative (43 %) complications were all in the expected range. In particular, we did not observe an increased rate of postoperative bleedings (3 %). The postoperative mortality rate was 0 %.

CONCLUSIONS:

Quantity and the kind of surgery-associated spectrum of complications followed by a preoperative bevacizumab-containing RCT regimen in patients with LARC were in line with comparable trials of bevacizumab-based approaches.

PMID:
24306667
DOI:
10.1245/s10434-013-3412-9
[Indexed for MEDLINE]

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