TY - JOUR

T1 - The Prognostic and Predictive Value of Soluble Type IV Collagen in Colorectal Cancer

T2 - A Retrospective Multicenter Study

AU - Rolff, Hans Christian

AU - Christensen, Ib Jarle

AU - Vainer, Ben

AU - Svendsen, Lars Bo

AU - Eefsen, Rikke Løvendahl

AU - Wilhelmsen, Michael

AU - Lund, Ida Katrine

AU - Høyer-Hansen, Gunilla

AU - Nielsen, Hans Jørgen

AU - Illemann, Martin

AU - Danish Collaborative Research Group on Colorectal Cancer

N1 - ©2015 American Association for Cancer Research.

PY - 2016/5

Y1 - 2016/5

N2 - PURPOSE: To investigate the prognostic and predictive biomarker value of type IV collagen in colorectal cancer.EXPERIMENTAL DESIGN: Retrospective evaluation of two independent cohorts of patients with colorectal cancer included prospectively in 2004-2005 (training set) and 2006-2008 (validation set). Plasma samples were available from 297 (training set) and 482 (validation set) patients. Type IV collagen determinations were performed using an ELISA. From the training set, 222 tumors were available for IHC. Clinical and follow-up data were retrieved from patient files and national registries.RESULTS: High levels of type IV collagen showed independent prognostic significance in both cohorts with hazard ratios (HRs; for a one-unit change on the log base 2 scale) of 2.25 [95% confidence intervals (CIs), 1.78-2.84; P < 0.0001] and 2.24 (95% CI, 1.75-2.86; P < 0.0001) for the training and validation set, respectively. The prognostic impact was present both in patients with metastatic and nonmetastatic disease. The predictive value of the marker was investigated in stage II and III patients. In the training set, type IV collagen was prognostic both in the subsets of patients receiving and not receiving adjuvant antineoplastic therapy. However, in the validation set, the prognostic effect of the marker vanished when looking at patients who received adjuvant antineoplatic therapy (HR 0.90; 95% CI, 0.42-1.93) but was still present in the group not receiving adjuvant chemotherapy (HR 2.88; 95% CI, 1.98-4.21).CONCLUSIONS: The results indicate clinical validity of type IV collagen as a prognostic biomarker in colorectal cancer, although the suggested predictive role of the marker should be validated. Clin Cancer Res; 22(10); 2427-34. ©2015 AACR.

AB - PURPOSE: To investigate the prognostic and predictive biomarker value of type IV collagen in colorectal cancer.EXPERIMENTAL DESIGN: Retrospective evaluation of two independent cohorts of patients with colorectal cancer included prospectively in 2004-2005 (training set) and 2006-2008 (validation set). Plasma samples were available from 297 (training set) and 482 (validation set) patients. Type IV collagen determinations were performed using an ELISA. From the training set, 222 tumors were available for IHC. Clinical and follow-up data were retrieved from patient files and national registries.RESULTS: High levels of type IV collagen showed independent prognostic significance in both cohorts with hazard ratios (HRs; for a one-unit change on the log base 2 scale) of 2.25 [95% confidence intervals (CIs), 1.78-2.84; P < 0.0001] and 2.24 (95% CI, 1.75-2.86; P < 0.0001) for the training and validation set, respectively. The prognostic impact was present both in patients with metastatic and nonmetastatic disease. The predictive value of the marker was investigated in stage II and III patients. In the training set, type IV collagen was prognostic both in the subsets of patients receiving and not receiving adjuvant antineoplastic therapy. However, in the validation set, the prognostic effect of the marker vanished when looking at patients who received adjuvant antineoplatic therapy (HR 0.90; 95% CI, 0.42-1.93) but was still present in the group not receiving adjuvant chemotherapy (HR 2.88; 95% CI, 1.98-4.21).CONCLUSIONS: The results indicate clinical validity of type IV collagen as a prognostic biomarker in colorectal cancer, although the suggested predictive role of the marker should be validated. Clin Cancer Res; 22(10); 2427-34. ©2015 AACR.

KW - Journal Article

U2 - 10.1158/1078-0432.CCR-15-2342

DO - 10.1158/1078-0432.CCR-15-2342

M3 - Journal article

C2 - 26673797

VL - 22

SP - 2427

EP - 2434

JO - Clinical Cancer Research

JF - Clinical Cancer Research

SN - 1078-0432

IS - 10

ER -