Cancer Clinical Trial
Official title:
68Ga-NOTA-PEG2-RM26 PET/CT: Tracer Biodistribution and Uptake in Different Kinds of Cancer With Gastrin-Releasing Peptide Receptor (GRPR) Overexpression
This is an open-label positron emission tomography/computed tomography (PET/CT) study to investigate the diagnostic performance and evaluation efficacy of 68Ga-NOTA-PEG2-RM26 in prostate cancer patients. A single dose of 2 MBq/kg of 68Ga-NOTA-PEG2-RM26 limited to 100-200 MBq per examination will be given intravenously. Visual and semiquantitative method will be used to assess PET/CT images.
The gastrin-releasing peptide receptor (GRPR), also known as bombesin receptor subtype II (BB2), is a member of the G protein-coupled receptor family of bombesin receptors. GRPR is over-expressed in various types of human tumors. RM26, a GRPR antagonist with high affinity, was discovered by peptide backbone modification of bombesin analogues. To target gastrin-releasing peptide receptor in human neoplastic cells NOTA-PEG2-RM26 was synthesised and then labeled with 68Ga. An open-label whole-body PET/ CT study was designed to investigate the safety and dosimetry of 68Ga-NOTA-PEG2-RM26 and to assess its clinical diagnostic value in patients with cancer. ;
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