UBA1 and breast cancer: This study aimed to evaluate the prognostic relevance of UBA1 protein expression in patients with breast cancer.<h4>Methods</h4>Formalin-fixed, paraffin-embedded (FFPE) tissue samples from 413 chemotherapy-naïve patients with invasive breast cancer were obtained from the Institute of Surgical Pathology (ISP) at the University Medical Centre Freiburg in Germany.