Cellectar Receives FDA Fast Track Designation for CLR 131 in Lymphoplasmacytic Lymphoma/Waldenstrom’s Macroglobulinemia

FLORHAM PARK, N.J., May 26, 2020 (GLOBE NEWSWIRE) -- Cellectar Biosciences, Inc. (NASDAQ: CLRB), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of drugs for the treatment of cancer, today announced the U.S. Food and Drug Administration (FDA) has granted Fast Track Designation for CLR 131 in lymphoplasmacytic lymphoma (LPL)/Waldenstrom’s macroglobulinemia (WM) in patients having received two prior treatment regimens or more. CLR 131 is the company’s small-molecule, cancer-targeting 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 Phase 2 CLOVER-1 clinical study in patients with relapsed or refractory multiple myeloma and lymphoplasmacytic lymphoma/Waldenstrom’s macroglobulinemia.

“LPL/WM patients that do not respond optimally or are intolerant of ibrutinib, currently have limited treatment options and poor survival rates. Fast Track Designation for LPL/WM further supports our clinical development strategy to quickly and efficiently provide these patients with an effective therapeutic alternative,” said James Caruso, president and CEO of Cellectar. “All four LPL/WM patients treated in our CLOVER-1 Phase 2 study to date achieved a 100% overall response rate and a 25% complete response rate. This strong response rate may represent an important improvement in the treatment of relapsed/refractory LPL/WM as no approved or late-stage development treatments for relapsed or refractory patients have reported complete responses.”

Cellectar announced that it had received Orphan Drug Designation (ODD) for CLR 131 in LPL earlier this year. In addition to the variety of benefits derived from the ODD, the company will also receive increased engagement and assistance from the FDA in support of the regulatory approval pathway for LPL/WM.

Fast Track Designation
Fast Track Designation is granted to drugs being developed for the treatment of serious or life-threatening diseases or conditions where there is an unmet medical need. The purpose of the Fast Track Designation provision is to help facilitate development and expedite the review and potential approval of drugs to treat serious and life-threatening conditions. Sponsors of drugs that receive Fast Track Designation have the opportunity for more frequent interactions with the FDA review team throughout the development program. These can include meetings to discuss study design, data required to support approval, or other aspects of the clinical program. Additionally, products that have been granted Fast Track Designation may be eligible for priority review of a New Drug Application (NDA) Real Time Oncology Review (RTOR) by the FDA which allows the FDA to begin review of the data within weeks of concluding the pivotal study.