Real-world effectiveness of palbociclib + endocrine therapy in tumor histological subgroups of patients with HR+/HER2- Advanced Breast Cancer: Interim Results of the PERFORM study. 15. Januar 2026 Rupert Bartsch, Matthias Korell, Georg Pfeiler, Thomas Gabrysiak, Volker Petersen, Mustafa Deryal, Thomas Fietz, Julia Radosa, Thomas Decker, Björn Schöttker, Jan Knoblich, Uwe Rhein, Natalja Deuerling, Martin Glasstetter, Dunja Klein, Johanna Dzieran, Thomas Schiffer, Katharina Lunglmeir, André Breitbach, Michael Patrick Lux. The Breast, Volume 83, Supplement, 2025, Pages S34-S35, ISSN 0960-9776, https://doi.org/10.1016/S0960-9776(25)00717-9 Poster