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NCI Drug Dictionary

  

gallium Ga 68-labeled DOTA Di-HSG peptide IMP-288 
A radiolabeled divalent histamine-succinyl-glycine (HSG) hapten-peptide linked with the macrocyclic chelator 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) to the radionuclide gallium (Ga) 68 with potential use in diagnostic imaging. After pretargeting with a bispecific monoclonal antibody (BiMoAB) directed against both a tumor-associated antigen (TAA) and the HSG hapten-peptide, the HSG portion of administered gallium Ga 68-labeled di-HSG-DOTA peptide IMP-288 binds the anti-HSG portion of the BiMoAB; Ga-68 radioisotopic activity localized to tumor cells bearing the TAA can then be visualized upon positron emission tomography (PET). Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Synonym:Ga-68-IMP-288