Gene Profiling Predicts Resistance To Breast Cancer Drug Herceptin

Wed, 21 Feb 2007 10:00 AM EST

... Using gene chips to profile tumors before treatment, researchers at Harvard and Yale Universities found markers that identified breast cancer subtypes resistant to Herceptin, the primary treatment for HER2-positive breast cancer. They say this advance could help further refine therapy for the 25 to 30 percent of breast cancer patients with this class of tumor. ...