LBA67 Phase III randomized study comparing perioperative nivolumab (nivo) versus observation in patients (Pts) with renal cell carcinoma (RCC) undergoing nephrectomy (PROSPER, ECOG-ACRIN EA8143), a National Clinical Trials Network trial. - Allaf, M.; Kim, S.E.; Harshman, L.C.; McDermott, D.F.; Master, V.A.; Signoretti, S.; Cole, S.; Moon, H.; Adra, N.; Singer, E.A.; Gills, J.; Choueiri, T.K.; et al. (Annals of Oncology, 2022)