UNLABELLED BACKGROUND Repeated administration of antibody-based therapies such as radioimmunotherapy depends on preserved antigen expression in tumor lesions. The purpose of this study was to evaluate whether the antigen expression in metastases observed after radioimmunotherapy differs from that of untreated primary tumors. FINDINGS 30 of the 35 Brown Norway rats with syngeneic colon carc...

A potential milestone in personalized nuclear medicine is theranostics of metastatic castration-resistant prostate cancer (mCRPC) based on molecular imaging using PET/CT with 68Ga-labeled prostate-specific membrane antigen (PSMA) ligands and molecular radiotherapy using PSMA-targeted radioligand therapy (PRLT) with 177Lu-PSMA ligands. 68Ga-PSMA PET/CT enables accurate detection of mCRPC lesions...

This manuscript reports on a patient with a metastatic gastrointestinal stromal tumor (GIST) refractory to standard first-line treatment, who underwent a gallium-68 scan based on pre-clinical data of somatostatin receptor (SSTR) expression in such tumors. The gallium-68 DOTATATE scan determined significant somatostatin receptor avidity as hypothesized, suggesting that this imaging modality may ...

Multistep targeting systems represent highly selective alternatives to targeting systems using directly radiolabeled antibodies for diagnostic and therapeutic applications. A flexible bispecific antibody (bsMAb) multistep, pretargeting system that potentially can be developed for use with a variety of different imaging or therapeutic agents is described herein. The flexibility of this system is...

Aims and Objectives: Assessment of renal toxicity profile of 177Lu-DOTATATE based Peptide Receptor Radionuclide therapy (PRRT) in patients of Metastatic Neuroendocrine tumor (NET) with a single functioning kidney. Materials and Methods: This was a retrospective analysis of NET patients, who had undergone PRRT with 177Lu-DOTATATE at a large tertiary care centre. The patients selected for the stu...