Cellectar Biosciences is a biopharmaceutical firm engaged in the research, development, and market introduction of therapeutic agents to combat cancer. The company's primary asset is CLR 131 (iopofosine I-131), a phospholipid drug conjugate (PDC), which is currently undergoing several clinical evaluations. It is in Phase 2 clinical trials for individuals with relapsed or refractory (r/r) Waldenstrom's macroglobulinemia and B-cell malignancies. Additionally, CLR 131 is being studied in Phase 2B for r/r multiple myeloma (MM) and in Phase I trials targeting a range of pediatric cancers, r/r head and neck cancers, and R/R MM. Furthermore, Cellectar is advancing CLR 1900, another PDC-based chemotherapeutic program, which is in preclinical stages with the aim of treating solid tumors. The firm also participates in collaborative PDC development initiatives with partners such as Avicenna Oncology GMBH for the CLR 2000 Series, Orano Med for the CLR 12120 Series, as well as IntoCell Inc. and LegoChemBio. Established in 2002, Cellectar Biosciences maintains its corporate headquarters in Florham Park, New Jersey.