PURPOSE: Colorectal cancer is one of the most common cancers. The tumor necrosis factor-related apoptosis inducing ligand (TRAIL) pathway transmits apoptotic signals and anticancer agents that activate this system, which are in clinical development. We sought to determine the prognostic value of the clinically most relevant members of this pathway in colorectal cancer patients. EXPERIMENTAL DESIGN: We used an arrayed panel of colorectal cancer tissue to assess the protein expression of the functional TRAIL receptors (TRAIL-R1 and TRAIL-R2) and both the long and short forms of FLICE inhibitory protein (FLIP(L) and FLIP(S)). Disease-free survival was examined by Kaplan-Meier estimates and the log-rank test. Prognostic factors were determined by Cox multivariate analysis. RESULTS: The TRAIL receptors and FLIP(S) were not associated with survival. On univariate analysis, strong FLIP(L) expression was associated with a significantly higher survival (P = 0.0082). On multivariate analysis using the Cox proportional hazards model, FLIP(L) phenotype was significantly associated with a poor prognosis in this series (hazard ratio, 2.04; 95% confidence interval, 1.18-3.56; P = 0.011). CONCLUSIONS: Overexpression of FLIP(L), but not TRAIL-R1 or TRAIL-R2, provides stage-independent prognostic information in colorectal cancer patients. This may indicate a clinically more aggressive phenotype and a subset of patients for whom more extensive adjuvant treatment would be appropriate.
PURPOSE:Colorectal cancer is one of the most common cancers. The tumor necrosis factor-related apoptosis inducing ligand (TRAIL) pathway transmits apoptotic signals and anticancer agents that activate this system, which are in clinical development. We sought to determine the prognostic value of the clinically most relevant members of this pathway in colorectal cancerpatients. EXPERIMENTAL DESIGN: We used an arrayed panel of colorectal cancer tissue to assess the protein expression of the functional TRAIL receptors (TRAIL-R1 and TRAIL-R2) and both the long and short forms of FLICE inhibitory protein (FLIP(L) and FLIP(S)). Disease-free survival was examined by Kaplan-Meier estimates and the log-rank test. Prognostic factors were determined by Cox multivariate analysis. RESULTS: The TRAIL receptors and FLIP(S) were not associated with survival. On univariate analysis, strong FLIP(L) expression was associated with a significantly higher survival (P = 0.0082). On multivariate analysis using the Cox proportional hazards model, FLIP(L) phenotype was significantly associated with a poor prognosis in this series (hazard ratio, 2.04; 95% confidence interval, 1.18-3.56; P = 0.011). CONCLUSIONS: Overexpression of FLIP(L), but not TRAIL-R1 or TRAIL-R2, provides stage-independent prognostic information in colorectal cancerpatients. This may indicate a clinically more aggressive phenotype and a subset of patients for whom more extensive adjuvant treatment would be appropriate.
Authors: A Morizot; D Mérino; N Lalaoui; G Jacquemin; V Granci; E Iessi; D Lanneau; F Bouyer; E Solary; B Chauffert; P Saas; C Garrido; O Micheau Journal: Cell Death Differ Date: 2010-11-12 Impact factor: 15.828
Authors: Donal P McLornan; Helen L Barrett; Robert Cummins; Ultan McDermott; Cliona McDowell; Susie J Conlon; Victoria M Coyle; Sandra Van Schaeybroeck; Richard Wilson; Elaine W Kay; Daniel B Longley; Patrick G Johnston Journal: Clin Cancer Res Date: 2010-06-22 Impact factor: 12.531
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Authors: Roger W McGilvray; Robert A Eagle; Nicholas F S Watson; Ahmad Al-Attar; Graham Ball; Insiya Jafferji; John Trowsdale; Lindy G Durrant Journal: Clin Cancer Res Date: 2009-10-27 Impact factor: 12.531
Authors: Manonmani Ganapathy; Rita Ghosh; Xie Jianping; Xiaoping Zhang; Roble Bedolla; John Schoolfield; I-Tien Yeh; Dean A Troyer; Aria F Olumi; Addanki P Kumar Journal: Clin Cancer Res Date: 2009-02-17 Impact factor: 12.531
Authors: T Trarbach; M Moehler; V Heinemann; C-H Köhne; M Przyborek; C Schulz; V Sneller; G Gallant; S Kanzler Journal: Br J Cancer Date: 2010-01-12 Impact factor: 7.640