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Home: Oncology Leader Commentary: C Kent Osbourne, MD

Click on the topic below for comments by Dr C Kent Osborne to comment on. You will also find links to related articles and clinical trials.

Problems with estrogen receptor assays
Cut-off for ER-positivity
Receptor assays in metastatic disease
Mechanism of action of Faslodex
Receptor downregulation and Faslodex
Faslodex effects in the laboratory
Randomized trials comparing Faslodex to Arimidex
Tolerability of Faslodex
Other trials of Faslodex
Future Clinical role of Faslodex
Intramuscular injection of Faslodex
Clinical trials of adjuvant Faslodex
Management of DCIS
Future trials of Faslodex plus estrogen

Receptor assays in metastatic disease

Interview with Neil Love, MD Breast Cancer Update for Medical Oncologists, Program 6 2000

Play Audio Below:

The receptor assay in metastatic disease is simply one of several features that you look at to decide whether to treat the patient with endocrine therapy of chemotherapy. And there are certainly occasional patients with quote "ER-negative tumors" that I still give a trial of endocrine therapy. There, you’re not dealing with a curable disease, no matter what you do, and delays of a few weeks or even a few months is not going to be significantly deleterious to the patient. So, if you give her a trial of endocrine therapy and you’re wrong, you haven’t lost anything. In the adjuvant setting, however, it’s a different story. There, we’re talking about potentially curative therapies. And if you’re wrong there, it can make a big difference.

Relevant Articles:

The effect of estrogen usage on the subsequent hormone receptor status of primary breast cancer.
Lower, E. E.; Blau, R.; Gazder, P., and Stahl, D. L. (Reprint available from: Lower EE Univ Cincinnati, Coll Med, Dept Internal Med Cincinnati, OH 45221 USA).. Breast Cancer Research & Treatment. 58(3):205-211, 1999 Dec.

Development of a novel, "pure" antiestrogen.
Howell, A.; Osborne, C. K.; Morris, C., and Wakeling, A. E. ICI 182,780 (Faslodex (TM)) -. Cancer. 89(4):817-825, 2000 Aug 15.

Time-dependent relevance of steroid receptors in breast cancer.
Coradini, D.; Daidone, M. G.; Boracchi, P.; Biganzoli, E.; Oriana, S.; Bresciani, G.; Pellizzaro, C.; Tomasic, G.; Di Fronzo, G., and Marubini, E. Journal of Clinical Oncology. 18(14):2702-2709, 2000 Jul.

Hormonal receptor determination of 1,052 Chinese breast cancers.
Chow, L. W. C. and Ho, P. Journal of Surgical Oncology. 75(3):172-175, 2000 Nov.

Youth and hormone receptors in breast cancer: good or bad news first?
Stockler, M. and Beith, J. (Reprint available from: Stockler M Univ Sydney, Natl Hlth & Med Res Council, Clin Trials Ctr, Dept Med Sydney NSW 2006 Australia). Lancet. 355(9218): 1839-1840, 2000 May 27. No abstract

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