Bresat Cancer Update
Oncology Leader CommentarySpecial FeaturesPrevious Issues

Home: Oncology Leader Commentary: Andrew D. Seidman, MD

Click on the topic below for comments by Dr Andrew D. Seidman to comment on. You will also find links to related articles and clinical trials.

HER-2 and selection of adjuvant therapy
Adjuvant chemotherapy for node-positive patients
Adjuvant chemotherapy plus tamoxifen in ER+ patients
Aromatase inhibitors in women with increased risk of thromboembolic complications
Tamoxifen rechallenge in the metastatic setting
Trials of adjuvant Arimidex
Aromatase inhibitors in women who cannot receive adjuvant tamoxifen
Choice of aromatase inhibitors
Chemotherapy followed by endocrine therapy for metastatic disease
Herceptin for metastatic disease
Herceptin as a single agent for metastatic disease
HER-2 assays
Trials correlating activity of Herceptin with HER 2 assay
Effect of Herceptin in "HER2-negative" patients

Tamoxifen rechallenge in the metastatic setting

Interview with Neil Love, MD from Breast Cancer Update for Medical Oncologists, Program 3 2000

Play Audio Below:

There’s no uniqueness about inter-treatment interval with tamoxifen as compared to cisplatin or adriamycin or taxanes. Clearly if we induce mechanisms of drug resistance, these mechanisms are usually not permanent but dynamic, and the longer time between the initial drug exposure and the subsequent drug exposure, the more likely that patients will respond. So I’m certainly more apt to re-introduce tamoxifen for the treatment of metastatic disease if it has been a number of years, preferably a large number of years. For the patient who has completed five years of adjuvant tamoxifen and relapses a year later, I’m more inclined to go to an aromatase inhibitor rather than to re-introduce tamoxifen. For the patient – obviously I am drawing the two ends of the spectrum — who has had a five or greater year interval and then, I think the use of tamoxifen again, should be expected to be effective.

Relevant Articles:

Endocrine therapies for patients with recurrent breast cancer: Predictive factors for responses to first- and second-line endocrine therapies.
Kurebayashi, J.; Sonoo, H.; Inaji, H.; Nishimura, R.; Iino, Y.; Toi, M.; Kobayashi, S., and Saeki, T. (Reprint available from: Kurebayashi J Kawasaki Med Sch, Dept Breast & Thyroid Surg 577 Matsushima Okayama 7010192 Japan).. Oncology. 59(Suppl 1):31-37, 2000.

Current status of endocrine therapy for advanced breast cancer.
Bland, KI. Annals of Surgical Oncology. 6(8 Suppl S):4S-7S, 1999. No Abstract

Selective estrogen receptor modulators: Structure, function, and clinical use [Review].
Osborne, C. K. and Fuqua, S. A. W. Journal of Clinical Oncology. 18(17):3172-3186, 2000 Sep.

Symposium overview: Estrogens and antiestrogens in managing the patient with breast cancer.
Newman, L. A.; Wood, W. C.; Sellin, R. V.; Morrow, M.; Vogel, C., and Singletary, S. E. Annals of Surgical Oncology. 7(8):568-574, 2000 Sep.

How is tamoxifen's action subverted?
Jordan, V. C. Journal of the National Cancer Institute. 92(2):92-94, 2000 Jan 19. No abstract

Top of Page

Home · Contact us
Terms of use and general disclaimer