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Eur J Cancer. 2010 Dec;46(18):3323-31. doi: 10.1016/j.ejca.2010.06.009. Epub 2010 Jul 7.

Preoperative plasma TIMP-1 is an independent prognostic indicator in patients with primary colorectal cancer: a prospective validation study.

Author information

1
Department of Surgery, Uppsala University, 75185 Uppsala, Sweden. helgi.birgisson@surgsci.uu.se

Abstract

BACKGROUND:

Previous studies have suggested plasma tissue inhibitor of metalloproteinases-1 (TIMP-1) as a stage independent prognostic marker in colorectal cancer (CRC) patients. The aim was to validate plasma TIMP-1 and serum carcino-embryonic antigen (CEA) levels as prognostic indicators in an independent population-based cohort of patients with CRC.

PATIENTS AND METHODS:

During 2000-2003, plasma and serum were collected preoperatively from 322 patients treated for primary CRC. TIMP-1 and CEA levels were determined by validated ELISA platforms.

RESULTS:

High TIMP-1 and CEA levels each associated with poor overall survival (OS); TIMP-1 (hazard ratio (HR) 2.1; 95% confidence interval (CI) 1.6-2.7) and CEA (HR 1.2; 95% CI 1.1-1.3), and disease-free survival (DFS); TIMP-1 (HR 2.0; 95% CI: 1.5-2.6) and CEA (HR 1.2; 95% CI: 1.1-1.4) in univariate analyses. In stratified analyses of stages II and III, TIMP-1 levels associated significantly with OS and DFS in stages II and III, associations were not found for CEA. Multivariate analysis for OS, including TIMP-1 and CEA levels and clinico-pathological baseline variables, revealed significant association of TIMP-1 (HR 1.8; 95% CI 1.3-2.4) but not CEA levels.

CONCLUSIONS:

This independent prospective validation study confirms the significant association between preoperative plasma TIMP-1 levels and survival of CRC patients: TIMP-1 provided stronger prognostic information than CEA. Thus, this study brings plasma TIMP-1 to the next level of evidence for its clinical use as a prognostic marker in CRC patients.

PMID:
20619633
DOI:
10.1016/j.ejca.2010.06.009
[Indexed for MEDLINE]

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