RecruitingPhase 3Biological interventionA Study to Compare Pharmacokinetics, Efficacy and Safety of Subcutaneous CT-P44 and Darzalex Faspro in Combination With Lenalidomide and Dexamethasone in Patients With Refractory or Relapsed Multiple MyelomaThis study is a phase 1/3 study to Compare Pharmacokinetics, Efficacy and Safety of Subcutaneous CT-P44 and Darzalex Faspro in Combination with Lenalidomide and Dexamethasone in Patients with Refractory or Relapsed Multiple Myeloma