To evaluate serum tetranectin as a prognostic marker before first-line
chemotherapy, serum levels were studied in 67 patients with metastati
c breast cancer. In the Cox analyses, the relative risk (RR) for death
of cancer varied with the cut-off level of serum tetranectin. A maxim
al RR of 5.0 was found for patients with serum tetranectin less than o
r equal to 5.4 mg/l. The maximal RR of death for the other prognostic
variables were multiple metastases 2.8, and for a poor performance sta
tus 2.0. Testing for the outcome, progressive disease, a maximal RR of
3.8 was found for patients with serum tetranectin less than or equal
to 5.3 mg/l, a maximal RR of 3.7 for multiple metastases and a maximal
RR of 1.8 for a poor performance status. Significantly lower serum te
tranectin values were found in patients with a poor treatment response
compared to well responding patients. Serum tetranectrin seems to be
useful as an additional prognostic factor in metastatic breast cancer.