A tissue acquisition and collection protocol that will analyze potential cellular changes that occur after treatment with trastuzumab to try to elucidate the mechanism of trastuzumab resistance in patients with HER2-positive breast cancer.
18 Years to 70 Years (Adult, Senior)
April 14, 2008
November 5, 2013
University of Mass Medical School Worcester, Massachusetts, United States
† Study has passed its completion date and status has not been verified in more than two years.