RT Book, Section A1 Schoppmann, Sebastian F. A1 Thomanek, Karl A1 Gnant, Michael A1 Jakesz, Raimund A2 Kuerer, Henry M. SR Print(0) ID 6413312 T1 Chapter 47. The Austrian Breast and Colorectal Cancer Study Group Experience T2 Kuerer's Breast Surgical Oncology YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-160178-8 LK accesssurgery.mhmedical.com/content.aspx?aid=6413312 RD 2024/04/24 AB The Austrian Breast and Colorectal Cancer Study Group (ABCSG), formerly known as "Cooperative Studiengruppe Mammakarzinom," was established in 1984 as a cooperative institution conducting multicenter clinical trials in breast and colorectal cancer. Since its inception, more than 20,000 patients have been enrolled in some 30 prospective randomized phase III studies. The key scientific treatment issues studied until now in major clinical programs have been (1) adjuvant endocrine therapy for pre- and postmenopausal women, as well as the role of bisphosphonates, and (2) chemotherapy in the neoadjuvant setting. The goal of this chapter is to provide a brief synopsis of the high-impact trials carried out by the ABCSG with respect to breast surgical oncology and to examine their study results in a broader context.