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Endo180 modulation by bisphosphonates and diagnostic accuracy in metastatic breast cancer

Palmieri, C; Caley, M P; Purshouse, K; Fonseca, A-V; Rodriguez-Teja, M; Kogianni, G; Woodley, L; Odendaal, J; Elliott, K; Waxman, J; Sturge, Justin


C Palmieri

M P Caley

K Purshouse

A-V Fonseca

M Rodriguez-Teja

G Kogianni

L Woodley

J Odendaal

K Elliott

J Waxman


Background:Endo180 (CD280; MRC2; uPARAP)-dependent collagen remodelling is dysregulated in primary tumours and bone metastasis. Here, we confirm the release and diagnostic accuracy of soluble Endo180 for diagnosing metastasis in breast cancer (BCa).Methods:Endo180 was quantified in BCa cell conditioned medium and plasma from BCa patients stratified according to disease status and bisphosphonate treatment (n=88). All P-values are from two-sided tests.Results:Endo180 is released by ectodomain shedding from the surface of MCF-7 and MDA-MB-231 BCa cell lines. Plasma Endo180 was significantly higher in recurrent/metastatic (1.71±0.87; n=59) vs early/localised (0.92±0.37; n=29) BCa (P<0.0001). True/false-positive rates for metastasis classification were: 85%/50% for the reference standard, CA 15-3 antigen (28 U ml-1); 97%/36% for Endo180; and 97%/32% for CA 15-3 antigen+Endo180. Bisphosphonate treatment was associated with reduced Endo180 levels in BCa patients with bone metastasis (P=0.011; n=42). True/false-positive rates in bisphosphonate-naive patients (n=57) were: 68%/45% for CA 15-3 antigen; 95%/20% for Endo180; and 92%/21% for CA 15-3 antigen+Endo180.Conclusion:Endo180 is a potential marker modulated by bisphosphonates in metastatic BCa.


Palmieri, C., Caley, M. P., Purshouse, K., Fonseca, A., Rodriguez-Teja, M., Kogianni, G., …Sturge, J. (2013). Endo180 modulation by bisphosphonates and diagnostic accuracy in metastatic breast cancer. The British journal of cancer / Cancer Research Campaign, 108(1), 163-169.

Journal Article Type Article
Acceptance Date Dec 31, 2013
Online Publication Date Dec 20, 2012
Publication Date 2013-01
Publicly Available Date
Journal British Journal of Cancer
Print ISSN 0007-0920
Electronic ISSN 1532-1827
Publisher Cancer Research UK
Peer Reviewed Peer Reviewed
Volume 108
Issue 1
Pages 163-169
Keywords Cancer Research; Oncology
Public URL