Characterization of HER2 Expression Levels, Including HER2-Ultralow, in a Retrospective Male Breast Cancer Cohort. - Marhold, Maximilian; Binder, Alexa; Bago-Horvath, Zsuzsanna; Konrad, Stefan; Kauer-Dorner, Daniela; Bartsch, Rupert; Exner, Ruth; Wimmer, Kerstin (Life (2075-1729), 2026)