...we investigated the prognostic value of the soluble form of CD73 (sCD73) in patients with advanced triple negative breast cancer (TNBC) treated with first-line durvalumab and chemotherapy, with or without anti-CD73 antibody oleclumab in the randomized, phase II SYNERGY trial (NCT03616886)....Median overall survival (OS) was significantly shorter in patients with high baseline sCD73 levels compared to those with low sCD73 (18.8 vs. 26.4 months; log-rank, p=0.03).