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Cellectar Biosciences Presents Compelling Efficacy Data from Phase 2b CLOVER WaM Subset Analysis of Iopofosine I 131 in Patients Relapsed/Refractory to BTK Inhibitor Therapy at the International Workshop for Waldenström Macroglobulinemia

$CLRBPress releaseOct 15, 2026, 7:00 AM ETRead the release

Cellectar presented Phase 2b CLOVER WaM subset data at the IWWM showing iopofosine I 131 achieved an 87.5% overall response rate, 79.2% major response rate, and 100% clinical benefit rate in 24 WM patients treated immediately after BTK inhibitor therapy. Median duration of response was 16.0 months with 19.1-month treatment-free survival, and treatment-emergent adverse events occurred in under 10% of patients despite 75% being BTKi refractory.

Key figures

Drug Name
iopofosine I 131
Phase Of Trial
Phase 2b
Cbr
100%
Mrr
79.2%
Orr
87.5%
Teae rate
less than 10% of patients
Subset size
24
Median dor months
16
Treatment free survival months
19.1

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