Professor Jackisch is a long-standing member of several national and international steering committees for breast and ovarian cancer trials, including the AGO OVAR Study Group, the HERA trial, and the ALTTO trial. In addition, he is a member of the German Task Force developing national guidelines for the diagnosis and treatment of breast cancer (AGO Guidelines for Breast Cancer: www.ago-online.org). He serves as president of the Cancer Society in Hesse, and has been appointed in this position to serve as a member of the board of directors in the German Cancer Society from 2012-2016 and 2020-2022
His main focus is clinical research in gynecology and gynecologic oncology, as well as breast cancer. In this context he is mainly focused on the endocrine regulation of breast cancer and the therapeutic impact of new treatment options. In recent years he focused on breast cancer prevention and screening programs. He has widely published in his field of expertise with more than 200 peer reviewed papers and is reviewer of various national and international journals.