Might be straying off the point somewhat but ?? is your friend thinking of the STAR trial???
Compared Tamoxifen with Raloxifene (currently indicated to prevent/treatpostmenopausal osteoporosis) in the PREVENTION of BC
http://www.cancer.gov/newscenter/pre...sultsApr172006
Don't know if there are published/ongoing studies to the role of Raloxifene in BC patients