Abstract
Abstract The aim of the present study was to investigate the association of peripheral-blood cell count (PBC)-derived ratios, other biomarkers of inflammation and biomarkers of tumor growth with outcome in a cohort of patients presenting for the next line of therapy after the failure of prior systemic treatment. The data of 51 patients with advanced/metastatic colorectal carcinoma treated with cetuximab in the second or higher line of therapy were retrospectively analyzed. The median duration of cetuximab therapy and the median survival were 5.1 and 12.1 months, respectively. C-reactive protein (CRP), but not urinary neopterin correlated significantly with PBC-derived ratios. Both CRP and urinary neopterin correlated positively with carcinoembryonic antigen (CEA) concentrations and biomarkers of liver dysfunction. Although a number of parameters predicted overall survival in univariate analysis, only hemoglobin, CEA change and serum bilirubin were independent predictors of survival. In conclusion, in patients with metastatic colorectal carcinoma and predominantly liver metastases, the outcome of therapy in the advanced line setting was associated with initial hemoglobin level, a decrease of CEA concentration and initial presence of liver dysfunction. Urinary neopterin did not correlate with PBC-derived ratios, in contrast to CRP, but both urinary neopterin and serum CRP concentrations correlated with laboratory parameters of liver dysfunction.
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