A phase Ib study of xentuzumab plus abemaciclib and fulvestrant in patients (pts) with advanced hormone receptor-positive (HR+), HER2-negative breast cancer (BC) with visceral or non-visceral disease.
Yee D, LoRusso P, Sablin M, Prat A, Stradella A, Utriainen M, Oliveira M, Yonemori K, Naito Y, Hardebeck M, Puig M, Hu J, Biyukov T, Iwata H. A phase Ib study of xentuzumab plus abemaciclib and fulvestrant in patients (pts) with advanced hormone receptor-positive (HR+), HER2-negative breast cancer (BC) with visceral or non-visceral disease. Journal Of Clinical Oncology 2021, 39: 1057-1057. DOI: 10.1200/jco.2021.39.15_suppl.1057.Peer-Reviewed Original ResearchDisease control rateNon-visceral diseaseEndocrine therapyBreast cancerVisceral metastasesProgression-free survival benefitHER2-negative breast cancerDisease controlDose-finding cohortMost common AEsMedian treatment durationOpen-label studyPhase Ib studyPhase II doseNon-measurable diseaseHypo/hyperglycemiaCyclin-dependent kinase 4Advanced hormoneCommon AEsPFS ratesExpansion cohortPostmenopausal womenPrimary endpointSecondary endpointsMedian duration