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Investigation of 68Ga-DOTATATE, as a PET Imaging Agent in Neuroendocrine Tumor Patients

Neuroendocrine Carcinoma Clinical Trial

Official title:
Investigation of 68Ga-DOTATATE, as a PET Imaging Agent in Neuroendocrine Tumor Patients

Clinical Trial Summary

This is a prospective, Phase 1-2, single center study in a total of 100 subjects with Neuroendocrine Tumors (NETs). Study participants will receive a one-time administration of 68Ga-DOTATATE and undergo a PET/CT imaging study, to investigate its suitability as a PET imaging agent for NETs.

Clinical Trial Description

In this study, we propose to use a well-established PET isotope, 68-Gallium (68Ga), bound to a somatostatin analogue, DOTA-octreotate, or DOTATATE, which has high affinity for the somatostatin receptor type 2 (SSTR2). Most gastro-entero-pancreatic (GEP) NETs express SSTR2 on their cell surfaces; when the radiolabeled SSTR2 analogue binds to these receptors, the radioactive molecule is internalized and transported to the tumor cell nucleus, thus concentrating the radioactivity and improving the signal-to-noise ratio on the PET scan, particularly as the background rapidly clears. This internalization, combined with the improved physical principles of PET imaging, shorter half-life of the 68Ga (68 minutes vs. about three days for 111In), improved radiation dosimetry, faster scanning, and lower cost results in a greatly improved scan for diagnosis, staging and restaging of NET disease compared to conventional 111In-octreotide imaging. Additionally, 68Ga-DOTATATE PET/CT scanning can be performed in 1.5 hours from injection of the radiopharmaceutical to completion of the scan, vs. 2-3 days for 111In-octreotide imaging. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01873248
Study type Interventional
Source Jonsson Comprehensive Cancer Center
Contact
Status Completed
Phase Phase 1/Phase 2
Start date August 26, 2013
Completion date June 16, 2017
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