Thymidine phosphorylase expression and effect of doxifluridine: A phase II study
- Authors:
- Published online on: July 1, 2001 https://doi.org/10.3892/or.8.4.753
- Pages: 753-758
Metrics: Total
Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )
Abstract
Doxifluridine (5'-DFUR), an active intermediate metabolite of capecitabine, is converted to 5-fluorouracil by thymidine phosphorylase (TP). We used immunohistochemical staining to investigate the relation between TP expression and 5'-DFUR effects in 40 patients with advanced/recurrent lung metastases from colorectal cancer. Cox regression analysis suggested that TP-positive cancer cells (risk ratio 3.72), were independent factors in survival whereas factors in progression-free survival were TP-positive cancer cells (2.93), and TP-positive stromal cells (0.24). It is suggested that TP expression in cancer cells and in stromal cells are opposite prognostic factors in patients treated with 5'-DFUR.
