Approximately 80% Major Response Rate and Duration of Response Exceeding 16 Months in 

Subset Analysis of Patients Treated with Iopofosine I 131 Immediately Post-BTKi Therapy

Plans to Initiate Phase 3 Confirmatory Clinical Trial in 4Q26

FLORHAM PARK, N.J., June 01, 2026 (GLOBE NEWSWIRE) -- Cellectar Biosciences, Inc. (NASDAQ:CLRB), a late-stage clinical biopharmaceutical company focused on the discovery and development of drugs for the treatment of cancer, today announced that efficacy results from a subset of patients treated with iopofosine I 131 immediately post-Bruton Tyrosine Kinase inhibitor (BTKi) therapy in the Company's Phase 2 CLOVER WaM clinical trial of iopofosine I 131 to treat relapsed or refractory (r/r) Waldenström macroglobulinemia (WM) will be highlighted today in a poster presentation at the American Society of Clinical Oncology Annual Meeting (ASCO) taking place May 29-June 2, 2026 in Chicago, Illinois.