Background: The beneficial effects of bevacizumab, a widely used agent in metastatic colorectal cancer (mCRC), on clinical survival have been proven. This study investigated the correlation of the clinical benefits and prognosis with proteinuria and other parameters.
Methods: The study included mCRC patients receiving bevacizumab. Hypertension, 24-hour urine proteinuria, and other routine parameters were recorded at baseline and at certain intervals during treatment.
Results: The study included 36 consecutive patients. The median progression-free survival (PFS) duration was 10.9±2.6months, and the median overall survival (OS) was 23±3.1months. The median PFS was 7.2months among patients with basal proteinuria above 114mg/day, whereas the median PFS was 12months among patients with an equal or lower level (P=0.010). Similarly, PFS was shorter in patients with high lactate dehydrogenase (LDH) or carcinoembryonic antigen (CEA) levels (LDH, P=0.022; CEA, P=0.014). Bevacizumab response's performance status was good (P=0.05) and was even better in patients with a single liver metastasis (P=0.034) or hypertension (P=0.034).
Conclusions: We demonstrated that high basal proteinuria, LDH, or CEA levels may be negative prognostic factors in mCRC patients receiving bevacizumab.
Keywords: Bevacizumab; Metastatic colorectal cancer; Prognostic and predictive factors; Proteinuria.
Copyright © 2014 Elsevier Masson SAS. All rights reserved.