PROACT - Pre-Operative Arimidex Compared To Tamoxifen

Summary

The purpose of this study is to compare tamoxifen, versus a newer treatment, ARIMIDEX, which we already know to be well tolerated. The main objectives of this research study are to see whether using these drugs will shrink down tumours before surgery and to see if any shrinkage in the tumour affects the extent of surgery that is required.

Timeline

Start

2000-08

Primary completion

2003-01

Completion

2007-12

Publications

• Results Cataliotti L, Buzdar AU, Noguchi S, Bines J, Takatsuka Y, Petrakova K, Dube P, de Oliveira CT. Comparison of anastrozole versus tamoxifen as preoperative therapy in postmenopausal women with hormone receptor-positive breast cancer: the Pre-Operative "Arimidex" Compared to Tamoxifen (PROACT) trial. Cancer. 2006 May 15;106(10):2095-103. doi: 10.1002/cncr.21872.
• Fujiwara Y, Takatsuka Y, Imoto S, Inaji H, Ikeda T, Akiyama F, Tamura M, Miyoshi K, Iwata H, Mitsuyama S, Noguchi S. Outcomes of Japanese breast cancer patients treated with pre-operative and post-operative anastrozole or tamoxifen. Cancer Sci. 2012 Mar;103(3):491-6. doi: 10.1111/j.1349-7006.2011.02171.x. Epub 2012 Jan 13.

Drugs

Indications