Cellectar Biosciences, Inc. was granted Fast Track Designation by the FDA for CLR 131 in fourth line or later relapse/refractory multiple myeloma. CLR 131 is the company’s small-molecule radiotherapeutic phospholipid drug conjugate (PDC) designed to deliver cytotoxic radiation directly and selectively to cancer cells and cancer stem cells. It is currently being evaluated in Cellectar’s ongoing CLOVER-1 Phase II study in patients with relapsed or refractory multiple myeloma and other select B-Cel...