Clinical Trial: Novel Somatostatin Receptor Subtype 2 Antagonist Labelled With Terbium-161 (161Tb-DOTA-LM3)
Update 14th December 2025 - Results from the Phase 0 proof of concept trial. Conclusion [161Tb]Tb-DOTA-LM3 shows a 7.6-fold-higher tumor absorbed dose than that found when using [177Lu]Lu-DOTATOC. The tumor–to–bone marrow absorbed dose ratio was in the same range for both radiopharmaceuticals. The promising dosimetry and safety results from this phase 0 study will lay the foundation for further clinical development of [161Tb]Tb-DOTA-LM3. Dose-escalation trials and peptide dose optimizing studies are warranted to establish the maximum tolerated activity per cycle and assess long-term efficacy. The integration of 161Tb into PRRT regimens has the potential to redefine the therapeutic landscape for NETs,…