A Phase 1a/1b Multicenter, Open Label, Dose-Finding Study to Assess the Safety, Tolerability, Pharmacokinetics and Efficacy of CWP232291 Administered Intravenously Either Alone or in Combination With Lenalidomide and Dexamethasone in Subjects With Relapsed or Refractory Myeloma (MM) - ICH GCP - Clinical Trials Registry