• Media type: E-Article
  • Title: Different clinical outcome of metastatic colorectal cancer (MCRC) patients treated with intensive triplet chemotherapy plus bevacizumab (FIr-B/FOx) according to KRAS genotype and disease extension
  • Contributor: Bruera, Gemma; Cannita, Katia; Di Giacomo, Daniela; Lamy, Aude; Troncone, Giancarlo; Dal Mas, Antonella; Coletti, Gino; Frébourg, Thierry; Sabourin, Jean-Christophe; Tosi, Mario; Ficorella, Corrado; Ricevuto, Enrico
  • imprint: American Society of Clinical Oncology (ASCO), 2012
  • Published in: Journal of Clinical Oncology
  • Language: English
  • DOI: 10.1200/jco.2012.30.15_suppl.e14010
  • ISSN: 1527-7755; 0732-183X
  • Keywords: Cancer Research ; Oncology
  • Origination:
  • Footnote:
  • Description: <jats:p> e14010 </jats:p><jats:p> Background: Bevacizumab (BEV) plus triplet chemotherapy can increase efficacy of first-line treatment of MCRC, particularly if integrated with secondary liver surgery in liver-limited (L-L) patients (pts). Clinical outcome of FIr-B/FOx regimen was evaluated according to KRAS genotype in L-L and other MCRC pts. Methods: Tumoral and metastatic samples were screened for KRAS codon 12 and 13, and BRAF mutations by SNaPshot and/or direct sequencing. MCRC pts were classified as L-L and other or multiple metastatic (O/MM). Activity and efficacy were evaluated and compared using log-rank test. Results: Fifty-nine pts were evaluated: 31 KRAS wild-type, 53%; 28 KRAS mutant, 47%. At 21.5 months median follow-up, objective response rate (ORR), progression-free survival (PFS) and overall survival (OS) were, respectively: KRAS wild-type 90%, 14 months, 38 months; KRAS mutant 67%, 11 months, 20 months. PFS and OS were, respectively: overall in 25 L-L compared to 32 O/MM evaluable pts, 17 and 12 months, 47 and 21 months, significantly different; in KRAS wild-type, 12 L-L compared to 18 O/MM, 21 and 12 months, 47 and 28 months, significantly different; in KRAS mutant, 13 L-L compared to 14 O/MMS, 11 months equivalently, 39 and 19 months, not significantly different. Conclusions: First line FIr-B/FOx regimen can increase activity and efficacy of KRAS wild-type and mutant MCRC pts; integration with secondary liver surgery significantly discriminates increased clinical outcome in KRAS wild-type L-L compared to O/MM pts while not in KRAS mutant pts. </jats:p>
  • Access State: Open Access