Predictive relevance of soluble CD44v6 serum levels for the responsiveness to second line hormone- or chemotherapy in patients with metastatic breast cancer.

Abstract:

:Concentrations of soluble CD44 standard (sCD44std) and CD44 variant 6 (sCD44v6) isoforms were determined in the sera of 59 patients with distant metastasis from breast cancer receiving second line hormone- or chemotherapy, in comparison to 46 breast cancer patients without detectable recurrent disease and 21 healthy blood donors. The sera of non-metastatic breast cancer, patients contained sCD44std and sCD44v6 concentrations similiar to those of healthy blood donors. In sera of patients with distant metastasis from recurrent breast cancer the median values of sCD44std and sCD44v6 were significantly higher (sCD44std: 502 ng/ml, p=0.03; sCD44v6: 193 ng/ml, p = 0.002) in comparison to healthy blood donors and patients with non-metastatic disease (p<0.001 for both parameters). A significant correlation was observed between sCD44v6 serum concentrations and the number of metastasized organs (p=0.0018), serum LDH concentrations (p<0.0001), tumor grading (p=0.025) and the presence of hepatic metastasis (p=0.028). Furthermore, sCD44v6 expression was associated with the patient's responsiveness to second line hormone- or chemotherapy. Non-responders had significantly higher sCD44v6 levels compared with the responder group (median: 447 ng/ml vs 171 ng/ml; p=0.0007). Logistic regression analysis indicated that sCD44v6 serum levels above 250 ng/ml (p =0.033) and the presence of hepatic metastasis (p=0.009) were independent factors predicting an unfavourable response to therapy.

journal_name

Anticancer Res

journal_title

Anticancer research

authors

Kopp R,Classen S,Wolf H,Gholam P,Possinger K,Wilmanns W

subject

Has Abstract

pub_date

2001-07-01 00:00:00

pages

2995-3000

issue

4B

eissn

0250-7005

issn

1791-7530

journal_volume

21

pub_type

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