Abstract
The aim was to examine the value of the pretherapeutic serum cancer-associated serum antigen (CASA) level as a prognostic factor for survival in patients with recurrent epithelial ovarian carcinoma. Serum levels of CASA and cancer antigen (CA)125 were prospectively determined in 70 consecutive patients with recurrent ovarian cancer before the start of second-line chemotherapy. Univariate and multivariate analyses of survival were performed. The median level of serum CASA was 6.5 U/mL (range: 0.2-1437 U/mL). Univariate analysis showed that patients with a CASA level >10.0 U/mL had significantly shorter survival than patients with CASA level < or =10.0 U/mL (P= 0.002). Using different CASA cutoff levels (6.0, 6.5, and 10.0 U/mL), multivariate Cox analyses identified CASA as an independent prognostic factor for survival at every cutoff level. The strongest prognostic function for CASA was found at a cutoff level of 10.0 U/mL (>10 vs < or =10 U/mL; hazard ratio, 2.7; 95% confidence interval, 1.6-4.7; P < 0.001). The pretreatment CA125 level was not found to be significantly associated with survival by any of the cutoffs (35, 65, 132, and 339 U/mL). A pretreatment elevated level of the tumor marker CASA is an adverse prognostic factor for survival in patients with ovarian cancer relapse.
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