Practice-Changing Perspectives regarding Systemic Therapy in Early Breast Cancer: Opinions of German Experts regarding the 17th St. Gallen International Consensus Conference.

The general topic of this year's 17th St. Gallen (SG) International Consensus Conference on the treatment of patients with early breast cancer (SG-BCC) was "Customizing local and systemic therapies for women with early breast cancer." This topic considers that each treatment decision must also consider the cancer-specific situation of the individual patient. This year, the votes of the SG-BCC were again discussed taking into account the multidisciplinary German S3 Guidelines and the recommendations of the Breast Cancer Working Group of the AGO (Arbeitsgemeinschaft Gynäkologische Onkologie; AGO Mamma). As the international panel of the SG-BCC consists of experts from different countries, the votes do represent an international cross-section of opinions. Therefore, it is useful to discuss the voting results with respect to the German evidence-based treatment guidelines. This publication focuses mainly on systemic treatment.

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Prof. Cornelia Kolberg-Liedtke received honoraria from Roche, AstraZeneca, Celgene, Novartis, Pfizer, Lilly, Hexal, Amgen, Eisai, and SonoScape as well as honoraria for consultancy work from Phaon Scientific, Novartis, Pfizer, and Celgene as well as research assistance from Roche, Novartis, and Pfizer. Travel grant from Novartis and Roche, employment at Palleos Healthcare, and Managing Director and partner at Phaon Scientific. Prof. Diana Lüftner received honoraria from Amgen, AstraZeneca, Celgene, Pfizer, Novartis, Roche, L'Oréal, Teva, GSK, and Eli Lilly. Prof. Dr. med. Sara Y. Brucker received honoraria from Roche, Novartis, Pfizer, AstraZeneca, and Teva. Prof. Dr. med. Wilfried Budach has no conflict of interest. Prof. Dr. med. Carsten Denkert received honoraria from Novartis, Roche, MSD Oncology, Daiichi Sankyo, Molecular Health, AstraZeneca, and Merck as well as research funding (for the Pathology Institute) from Myriad Genetics and Roche. He was co-founder and (until 2016) shareholder of Sividon Diagnostics. He is a co-inventor of the VMscope software for identifying Ki-67. Prof. Peter A. Fasching received grants from BioNtech and Cepheid as well as honoraria from Novartis, Pfizer, Daiichi-Sankyo, AstraZeneca, Eisai, Merck Sharp & Dohme, Lilly, Pierre Fabre, SeaGen, Roche, Hexal, and Agendia. Renate Haidinger has no conflict of interest. Prof. Nadia Harbeck received honoraria from AstraZeneca, Daiichi Sankyo, Lilly, MSD, Novartis, Pierre Fabre, Pfizer, Roche, and Seattle Genetics. Prof. Jens Huober received honoraria from Celgene, Roche, Novartis, Hexal, Pfizer, AstraZeneca, Lilly, Amgen, Eisai, and MSD as well as research assistance from Celgene, Hexal, and Novartis and travel grants from Roche, Novartis, Daiichi Sankyo, and Celgene. Prof. Christian Jackisch received honoraria from AstraZeneca, Lilly, Celgene, Novartis, Pfizer, AstraZeneca, Pierre Fabre, and Roche as well as research assistance from Exact Sciences. Prof. Wolfgang Janni received honoraria from Amgen, AstraZeneca, Celgene, Daiichi Sankyo, Eisai, Genomic Health, Hexal, Lilly, MSD, Novartis, Pfizer, Roche, Tesaro, and Teva. Dr. med. David Krug received honoraria from Merck Sharp & Dohme. Prof. Thorsten Kühn received honoraria from Celgene, Roche, and Pfizer as well as research assistance from Mammotome, Merit Medical, and Pfizer. Prof. Dr. med. Sibylle Loibl received honoraria from AbbVie, Amgen, AstraZeneca, Bayer, BMS, Celgene, Chugai, Daiichi Sankyo, EirGenix, GSK, Immunomedics, Ipsen, Lilly, Merck, Novartis, Pfizer, Pierre Fabre, Prime/Medscape, Puma, Roche, Samsung, Seagen, Teva, and Vifor and has a patent application (EP14153692.0) under review. Prof. Volkmar Müller received honoraria from Amgen, AstraZeneca, Daiichi Sankyo, Eisai, Pfizer, MSD, Novartis, Roche, Teva, and Seattle Genetics as well as honoraria for consultancy work from Genomic Health, Hexal, Roche, Pierre Fabre, Amgen, ClinSol, Novartis, MSD, Daiichi Sankyo, Eisai, Lilly, Tesaro, Seattle Genetics, and Neltar as well as funding for travel expenses from Roche, Pfizer, and Daiichi Sankyo and research assistance for the employer from Novartis, Roche, Seattle Genetics, and Genentech. Prof. Andreas Schneeweiss received honoraria from Celgene, Roche, Pfizer, AstraZeneca, Novartis, MSD, Tesaro, and Lilly as well as research assistance from Celgene, Roche, AbbVie, and Molecular Partner [sic: Molecular Partners] as well as travel grants from Celgene, Roche, and Pfizer. Prof. Christoph Thomssen received honoraria from Amgen, AstraZeneca, Celgene, Daiichi Sankyo, Eisai, Lilly, MSD, Mylan, Nanostring, Novartis, Pfizer, Pierre Fabre, Puma, Roche, and Vifor and research assistance from American Diagnostica, Affymetrix, and Nanostring. Prof. Michael Untch: honoraria to the employer (for AdBoard participation, presentations) as well as travel assistance from Amgen, AstraZeneca, BMS, Celgene, Daiichi Sankyo, Eisai, Janssen Cilag, Johnson & Johnson, Lilly Deutschland, Lilly International, MSD Merck, Mundipharma, Myriad Genetics, Odonate, Pfizer, PUMA Biotechnology, Riemser, Roche, Pierre Fabre, Novartis, Abbie [sic: AbbVie], Molecular Health, Agendia, and GSK. Prof. Dr. Marc Thill received honoraria and travel assistance from Amgen, AstraZeneca, Aurikamed, Becton and Dickinson, Biom'Up, Celgene, Clearcut, Connect Medica, Daiichi Sankyo, Eisai, Exact Sciences, Grünenthal, Hexal, I-Med Institute, Lilly, MCI, Medtronic, MSD, Neodynamics, Norgine, Novartis, OnkoLive, OmniaMed, Organon, pfm medical, Pfizer, Roche, Seagen, Sysmex, Tesaro, Teva, RTI Surgical, and Vifor and research assistance from Endomagnetics and Exact Sciences.