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lutetium Lu 177 XT117

A radioconjugate composed of XT117, a fibroblast activation protein inhibitor (FAPi), conjugated to the beta-emitting radioisotope lutetium Lu 177 (177Lu), with potential antineoplastic activity against FAP-expressing cancer-associated fibroblasts (CAFs). Upon administration, lutetium Lu 177 XT117 targets and binds to FAP-expressing CAFs. Upon binding, FAP-expressing CAFs are destroyed by 177Lu through the specific delivery of beta particle radiation. FAP, a cell surface protein, is overexpressed on CAFs in the tumor microenvironment (TME) of various cancers.
Synonym:[177Lu]Lu-XT117
177Lu-labeled XT117
Lu-177-XT117
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