Cellectar Biosciences, Inc. focuses on the discovery, development, and commercialization of drugs for cancer.Its lead phospholipid drug conjugate (PDC) candidate is CLR 131 (iopofosine I-131), which is in Phase 2 clinical study in patients with relapsed or refractory (r/r) Waldenstrom's macroglobulinemia and B-cell malignancies.