Loi S, Curigliano G, Salgado R, Diaz R, Delaloge S, Rojas C, Kok M, Manich C, Harbeck N, Mittendorf E, Yardley D, Pusztai L, Zaizar A, Ungureanu A, Ades F, Chandra R, Nathani R, Pacius M, Wu J, McArthur H. LBA20 A randomized, double-blind trial of nivolumab (NIVO) vs placebo (PBO) with neoadjuvant chemotherapy (NACT) followed by adjuvant endocrine therapy (ET) ± NIVO in patients (pts) with high-risk, ER+ HER2− primary breast cancer (BC). Annals Of Oncology 2023, 34: s1259-s1260. DOI: 10.1016/j.annonc.2023.10.010.Peer-Reviewed Original Research