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Samarium Sm 153-DOTMP

Radiopharmaceutical · Cytotoxic, directed at bone · developed by Telix Pharmaceuticals Pty

Phase 1 Most advanced trial
TLX Developer
1 Registered trials

What is Samarium Sm 153-DOTMP?

Samarium Sm 153-DOTMP is a radiopharmaceutical composed of the beta- and gamma-emitting radioisotope samarium Sm 153 conjugated to the phosphonic acid chelator DOTMP. The DOTMP moiety targets growing bone, selectively delivering samarium-mediated cytotoxic radiation to bone tumors and metastases to destroy them and mitigate pain.

Summary written with AI from the sources listed at the end of this page.

At a glance

Also known as
153Sm-DOTMP
Drug type
Radiopharmaceutical
Targets
bone
Mechanism
Cytotoxic, directed at bone
Pathways
apoptosis
Therapy area
Oncology
Developer
Telix Pharmaceuticals Pty Limited (TLX)
FDA status
Investigational, not approved in the US. Most advanced trial: Phase 1

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT07197645 Phase 1 Bone Pain Recruiting TLX

Trials of the companies BioRadar tracks, from ClinicalTrials.gov, most advanced phase first.

Conditions studied

Bone Metastases in Subjects With Advanced CancerBone PainMetastatic Bone Tumor

More from Telix Pharmaceuticals Pty

Sources

Updated Oct 3, 2026. Something wrong or missing? Report it on the TLX page.

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Data: FDA (Drugs@FDA, Purple Book, DailyMed), NIH (NCI Thesaurus, GSRS, RxNorm), ClinicalTrials.gov • Informational purposes only, not medical or investment advice. • All drugs A–Z

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