Aim: To assess the role of Notch activation in predicting bevacizumab efficacy in colorectal cancer (CRC). Materials & methods: Notch activation was evaluated by immunohistochemistry (IHC) on 65 CRC enrolled within randomized clinical trials assessing first-line bevacizumab-based chemotherapy and on 21 CRC treated with chemotherapy alone. Results: Strong Notch (IHC 3+) activation was negatively associated with response (18 vs 62% in low Notch cases [IHC 0, 1, 2+]; p = 0.016), progression-free survival (4.9 vs 12.1 months; p = 0.002) and overall survival (19.3 vs 30.4 months; p = 0.039). No correlation was found between Notch activation and clinical outcome in CRC treated with chemotherapy alone. Conclusion: A potential role of Notch activation in the antitumor activity of bevacizumab could be hypothesized.
Strong Notch activation hinders bevacizumab efficacy in advanced colorectal cancer / Negri, Francesca V; Crafa, Pellegrino; Pedrazzi, Giuseppe; Bozzetti, Cecilia; Lagrasta, Costanza; Gardini, Giorgio; Tamagnini, Ione; Bisagni, Alessandra; Azzoni, Cinzia; Bottarelli, Lorena; Graiani, Gallia; Romano, Ida; Porzio, Rosa; Bacchini, Gian P; Paties, Carlo; Tomasello, Gianluca; Marchetti, Giovanni; Fanello, Silvia; Pinto, Carmine; Sala, Roberto; Ardizzoni, Andrea. - In: FUTURE ONCOLOGY. - ISSN 1479-6694. - ELETTRONICO. - 11:23(2015), pp. 3167-3174. [10.2217/fon.15.218]
Strong Notch activation hinders bevacizumab efficacy in advanced colorectal cancer
ARDIZZONI, ANDREA
2015
Abstract
Aim: To assess the role of Notch activation in predicting bevacizumab efficacy in colorectal cancer (CRC). Materials & methods: Notch activation was evaluated by immunohistochemistry (IHC) on 65 CRC enrolled within randomized clinical trials assessing first-line bevacizumab-based chemotherapy and on 21 CRC treated with chemotherapy alone. Results: Strong Notch (IHC 3+) activation was negatively associated with response (18 vs 62% in low Notch cases [IHC 0, 1, 2+]; p = 0.016), progression-free survival (4.9 vs 12.1 months; p = 0.002) and overall survival (19.3 vs 30.4 months; p = 0.039). No correlation was found between Notch activation and clinical outcome in CRC treated with chemotherapy alone. Conclusion: A potential role of Notch activation in the antitumor activity of bevacizumab could be hypothesized.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
