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Oncology| Volume 53, ISSUE 8, P1034-1040, August 2021

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Impact of laparoscopy on oncological outcomes after colectomy for stage III colon cancer: A post-hoc multivariate analysis from PETACC8 European randomized clinical trial

      Abstract

      Background

      In colon cancer (CC), surgery remains the mainstay of treatment with curative intent. Despite several clinical trials comparing open and laparoscopic approaches, data on long-term outcomes for stage III CC are lacking.

      Methods

      This post-hoc analysis of the European PETACC8 randomized phase 3 trial included patients from 340 sites between December 2005 and November 2009, with long follow-up (median 7.56 years). Patients were randomly assigned to FOLFOX or FOLFOX+cetuximab after colonic resection. The surgical approach was left to the referring surgeon's discretion.

      Results

      Among 2555 patients included, 1796 (70.29%) were operated on by open surgery and 759 (29.71%) by laparoscopy. The 5-year OS rate was better after laparoscopic resection (85.4%, 95%CI 82.5–87.7) than after open surgery (80.2%, 95%CI 78.2–82.0; p = 0.002). The 5-year DFS rate was also better after laparoscopy (p = 0.016). However, in multivariate analysis using a propensity matching, the surgical approach was not found to be an independent prognostic factor for OS or DFS. OS (p = 0.0243) and DFS (p = 0.035) were increased after laparoscopic surgery in KRAS/BRAF WT sub-group

      Conclusion

      We showed that laparoscopic resection has comparable long-term outcomes to open surgery in patients with stage III CC. For those with RAS and BRAF WT CC, laparoscopic colectomy may favorably impact survival.

      Keywords

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      Linked Article

      • Laparoscopy and survival in colon cancer: A further step beyond the non-inferiority?
        Digestive and Liver DiseaseVol. 53Issue 8
        • Preview
          In the last two decades, several evidences have suggested safety and short-term advantages of laparoscopic approach for colon cancer surgery. However, in randomized clinical trials its benefits in terms of long-term survival have never gone beyond the mere non-inferiority in comparison with open surgery. The COST multi-institutional trial randomly assigned 872 patients affected by colon cancer to open and laparoscopic surgery and demonstrated similar disease-free survivals between groups (HR 0.86, 95%CI 0.63–1.17) [1].
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