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Serum HER-2/neu in the management of breast cancer patients.

Abstract：

:The clinical role of HER-2/neu, a 185 kD epithelial transmembranous protein, has evolved after the approval of the anti-HER-2/neu targeted monoclonal antibody trastuzumab (Herceptin) for the therapy of metastatic breast cancer. The extracellular domain of HER-2/neu undergoes proteolytic cleavage from the full-length protein by metalloproteases, and is shed into the blood as a circulating antigen. While HER-2/neu gene amplification and/or protein overexpression are detected in approximately 25% of primary breast cancers, serum HER-2/neu levels are elevated beyond the upper limit of normal in 50 to 60% of stage IV breast cancer patients. HER-2/neu in serum can be detected by enzyme immunoassays (manual and automated versions). It has been shown to have prognostic and predictive information in breast cancer patients. Monitoring for recurrence by serum HER-2/neu reaches a high sensitivity for HER-2/neu positive tumors. Longitudinal follow-up of patients during any kind of systemic therapy allows for monitoring of the therapeutic success. When utilized in these applications, serum HER-2/neu testing is complementary to HER-2/neu tissue results and to the determination of classical tumor markers such as CA 15-3, CA 27.29 and CEA, which are not targeted by specific forms of systemic therapy.

journal_name

Clin Biochem

journal_title

Clinical biochemistry

authors

Lüftner D,Lüke C,Possinger K

doi

10.1016/s0009-9120(03)00026-2

subject

Has Abstract

pub_date

2003-06-01 00:00:00

pages

233-40

issue

4

eissn

0009-9120

issn

1873-2933

pii

S0009912003000262

journal_volume

36

pub_type

杂志文章,评审

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