GO43073 (Multiple Myeloma - RECRUITMENT: commencing soon) Project Title A study to evaluate the safety and pharmacokinetics of XMAB24306 in combination with daratumumab in participants with relapsed/refractory multiple myeloma. Official Title A Phase Ib, open-label, multicenter, dose-escalation study to evaluate the safety and pharmacokinetics of XMAB24306 in combination with daratumumab in patients with relapsed/refractory multiple myeloma. Project Summary This study will evaluate the safety, tolerability, pharmacokinetics, and activity of XmAb24306 in combination with a multiple myeloma (MM)-targeting monoclonal antibody capable of inducing antibody-dependent cellular toxicity (ADCC) in participants with relapsed or refractory (R/R) MM who have received a minimum of three prior treatments, including at least one immunomodulatory drug (IMiD), one proteasome inhibitor (PI), and one anti-CD38 monoclonal antibody. Blood Disorder Relapsed/refractory multiple myeloma Patient Recruitment Details Patient recruitment status: commencing soon Number of patients (Globally) 60