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Home: Oncology Leader Commentary: Gershon Locker, MD

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

Trials of first line Arimidex
Choosing first-line endocrine therapy in postmenopausal patients
Vasomotor symptoms and Arimidex
Mechanisms of resistance to endocrine therapy
Tamoxifen rechallenge versus Arimidex
Aromatase inhibitors when adjuvant tamoxifen is contraindicated
ATAC adjuvant trial: Arimidex vs Tamoxifen vs the Combination

Trials of first-line Arimidex

Interview with Neil Love, MD from Breast Cancer Update for Medical Oncologists, Program 1 2000

Play Audio Below:

There are two trials. There is a North American trial and there is an international trial. And the most conservative interpretation on both of them is that Arimidex and tamoxifen are equivalent in the first-line treatment of hormonally responsive advanced breast cancer. And that’s the most conservative statement you can make and, as you know, the American study actually shows some benefit to Arimidex compared to tamoxifen in terms of time to progression. The European trial, which included a lot of women who were not estrogen-receptor positive, or at least known to be positive, is a much more difficult trial to interpret. But even in that study they were equivalent. And what this means is, again, alternatives - hormonal alternatives for postmenopausal women who have metastatic breast cancer front-line. We have always known that Arimidex is as good as anything second-line. But we now have front-line data. The other important point is that it justifies the examination of Arimidex and anastrozole in the adjuvant setting in a comparison with tamoxifen. And that study was just completed, the ATAC trial, and so, I think that is very exciting.

Relevant Articles:

Anastrozole versus tamoxifen as first-line therapy for advanced breast cancer in 668 postmenopausal women: Results of the tamoxifen or arimidex randomized group efficacy and tolerability study. Bonneterre, J.; Thurlimann, B.; Robertson, J. F. R.; Krzakowski, M.; Mauriac, L.; Koralewski, P.; Vergote, I.; Webster, A.; Steinberg, M., and von Euler, M. Journal of Clinical Oncology. 18(22):3748-3757, 2000 Nov 15.

Anastrozole is superior to tamoxifen as first-line therapy for advanced breast cancer in postmenopausal women: Results of a North American multicenter randomized trial.
Nabholtz, J. M.; Buzdar, A.; Pollak, M.; Harwin, W.; Burton, G.; Mangalik, A.; Steinberg, M.; Webster, A., and von Euler, M. Journal of Clinical Oncology. 18(22):3758-3767, 2000 Nov 15.

Critique of survival update analysis from two phase III anastrozole clinical trials.
Buzdar, A. U.; Wood; Wolter; Vogel; Bland, and Ravdin. Annals of Surgical Oncology. 6(8 Suppl S):8S-11S, 1999 Dec. No abstract

Static disease on anastrozole provides similar benefit as objective response in patients with advanced breast cancer.
Robertson, J. F. R.; Howell, A.; Buzdar, A.; von Euler, M., and Lee, D.. Breast Cancer Research & Treatment. 58(2):157-162, 1999 Nov.

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