An Investigator-Initiated, Phase II, Multicenter, Open-Label, Single-Arm, Prospective Clinical Trial to Evaluate the Efficacy and Safety of Alternating Bortezomib-Based Regimens in Combination With DaratUMumab Followed by Maintenance With Daratumumab in the Frontline Setting of Primary Plasma CEll L

An Investigator-Initiated, Phase II, Multicenter, Open-Label, Single-Arm, Prospective Clinical Trial to Evaluate the Efficacy and Safety of Alternating Bortezomib-Based Regimens in Combination With DaratUMumab Followed by Maintenance With Daratumumab in the Frontline Setting of Primary Plasma CEll LEukemIA: A Trial of the Greek Myeloma Study Group The " EUMELEIA " Study