A Double-blind, Randomized, Multicentre Trial to Compare the Anti-tumour Effects and Tolerability of a 500 mg Dose of Faslodex (Fulvestrant) Plus Arimidex (Anastrozole) With a 500 mg Dose of Faslodex(Fulvestrant) Alone and With Arimidex(Anastrozole) Alone, in Postmenopausal Women Prior to Surgery for Primary Breast Cancer
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Percentage Change From Baseline to Time of Surgery in Oestrogen Receptor (ER) H-score: Antitumour Effects of Fulvestrant, Anastrozole and a Combination of Both as Measured by the ER H-score.
For each sample, the ER H-score is calculated from the percentage of cells staining very weak (+/-); weak (+); moderate (++); or strong (+++) as follows: H-score = [(0.5 x percent +/-) + (1 x percent +) + (2 x percent ++) + (3 x percent +++)]. Range 0-300. The greater the change from baseline (randomization) in ER H-score, the greater the blockage of ER expression and the greater the potential anti-tumour activity. Percentage change from baseline=[(SRG - BL)/BL]x100
Surgery (SRG) was to be performed between days 15 and 22 after baseline (BL)
AstraZeneca Faslodex Medical Science Director, MD
United Kingdom: Department of Health