CHICAGO, June 4, 2007 -- Women on tamoxifen therapy who reported having hot flashes were less likely to develop recurrent breast cancer than those who did not report hot flashes, according to a study from the Moores Cancer Center at the University of California, San Diego (UCSD). Moreover, hot flashes were a stronger predictor of outcome than age, hormone receptor status or even how advanced the breast cancer was at diagnosis.The study results were presented at the American Society of Clinical Oncology (ASCO) annual meeting in Chicago today.