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- Holten-Andersen, M, et al.
(författare)
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Association between preoperative plasma levels of tissue inhibitor of metalloproteinases 1 and rectal cancer patient survival: a validation study
- 2004
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Ingår i: European Journal of Cancer. - : Elsevier BV. - 1879-0852 .- 0959-8049. ; 40:1, s. 64-72
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Tidskriftsartikel (refereegranskat)abstract
- The level of the tissue inhibitor of metalloproteinases 1 (TIMP-1) has previously been demonstrated to predict the survival of early stage colorectal cancer patients. The present study was undertaken to further validate plasma TIMP-1 as a prognostic marker in rectal cancer. Preoperative plasma from 352 rectal cancer patients were analysed using an immunoassay for TIMP-1. The TIMP-1 immunoassay demonstrated robustness and good reproducibility with low interassay coefficients of variation (CV). The rectal cancer patients had a mean plasma TIMP-1 level of 184 mug/l (standard deviation (SD): 70 mug/l). There were no significant differences in TIMP-1 levels between patients with Dukes' stage A, B or C disease, whereas Dukes' stage D patients had significantly increased TIMP-1 levels (P < 0.000 1); however, high levels of TIMP-1 were not restricted to those with advanced disease. Univariate analysis demonstrated an increasing risk of mortality with increasing TIMP-1 levels Hazard Ratio (HR)=2.9; 95% Confidence Interval (CI): 1.7-5.0; P<0.0001). Including additional covariates, multivariate analysis identified plasma T1MP-1 as an independent prognostic marker (HR=2.2; 95% CI: 1.2-4.1 (P 0.01). This study showed a highly significant and independent association between preoperative plasma TIMP-I levels and survival in rectal cancer patients, thus confirming our previous findings. Furthermore, the TIMP-1 immunoassay proved to be stable and reproducible in this confirmatory study. © 2003 Elsevier Ltd. All rights reserved.
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