Cellectar Biosciences IncPublication of positive Phase 1 study results for iopofosine I 131 in multiple myeloma

Cellectar Biosciences announced the publication of results from a Phase 1 dose-escalation study of iopofosine I 131 in heavily pretreated relapsed/refractory multiple myeloma patients in the peer-reviewed journal Cancers. The study enrolled 31 patients who had received a median of four prior lines of therapy and evaluated both single-dose and fractionated-dose regimens of iopofosine I 131 in combination with low-dose dexamethasone. Among 26 efficacy-evaluable patients, 84.6% achieved stable disease or better, and a 30% overall response rate was observed in the subgroup of 10 patients receiving at least 60 mCi of iopofosine I 131, while the overall response rate across all evaluable patients was 15.4% with four partial responses. The safety profile was favorable and manageable, with adverse events primarily consisting of predictable and reversible hematologic toxicities and no new safety signals identified. The authors recommended a fractionated Phase 2 regimen of 15 mCi/m² administered on days 1 and 7 with weekly low-dose dexamethasone.
Cellectar Biosciences IncPublication of positive Phase 1 study results for iopofosine I 131 in multiple myeloma