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Cathepsin D and the epidermal growth factor receptor (EGFr) have both been proposed as poor prognostic markers in breast cancer. We have compared the tumour cytosolic cathepsin D level with EGFr and oestrogen receptor (ER) levels and the axillary node status of 131 patients with operable breast cancer, to see if EGFr and cathepsin D are co-regulated. Cathepsin D level was measured using a two-site immunoradiometric assay kit. No correlation was found between the level of cathepsin D and EGFr, ER or nodal status. Since the raised level of cytosolic cathepsin D was not related to EGFr, it may be that measuring the level of both of these markers in the same sample will give additional prognostic information.

Original publication

DOI

10.1016/0959-8049(93)90401-z

Type

Journal article

Journal

Eur J Cancer

Publication Date

1993

Volume

29A

Pages

426 - 428

Keywords

Biomarkers, Tumor, Breast Neoplasms, Cathepsin D, ErbB Receptors, Female, Humans, Lymph Nodes, Prognosis, Receptors, Estrogen