The primary objective of the study is to test a new radiotracer called 64Cu-DOTA-AE105 for PET imaging of uPAR (urokinase plasminogen activator receptor). The tracer has the potential of identifying the invasive cancer phenotype, thereby distinguishing between aggressive and less aggressive tumors. This is a first in human study to test the radiotracer in cancer patients. The biodistribution and tumor uptake will be evaluated by repeated PET imaging (1,3 and 24 hours post injection).
The primary objective of the study is to test a new radiotracer called 64Cu-DOTA-AE105 for PET imaging of uPAR (urokinase plasminogen activator receptor). The tracer has the potential of identifying the invasive cancer phenotype, thereby distinguishing between aggressive and less aggressive tumors. This is a first in human study to test the radiotracer in cancer patients. The biodistribution and tumor uptake will be evaluated by repeated PET imaging (1,3 and 24 hours post injection). The primary end points are Biodistribution and dosimetry of 64Cu-DOTA-AE105. In addition, the quantitative uptake of 64Cu-DOTA-AE105 in tumors and expression of uPAR in tumor tissue obtained by surgery or biopsies (either 14 days before (only biopsies) or after the PET scans) will be compared to validate the image-derived data on UPAR expression
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
10
One injection of 64Cu-DOTA-AE105 (app. 200 Mbq) followed by Positron Emission Tomography Scan 1, 3 and 24 hours post injection
Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet
Copenhagen, Copenhagen, Denmark
Biodistribution
The patients will be PET scanned 1, 3 and 24 hours post injection of the radiotracer 64Cu-DOTA-AE105. These different timepoints will be used for assessment of biodistribution
Time frame: 24 hours
Dosimetry
The patients will be PET scanned 1, 3 and 24 hours post injection of the radiotracer 64Cu-DOTA-AE105. These different timepoints will be used for calculation of dosimetry
Time frame: 24 hours
Expression of UPAR in tumor tissue
Tumor uptake of 64Cu-DOTA-AE105 will be compared with expression of uPAR (using immunohistochemistry and ELISA) in tumor tissue obtained from biopsies/or operative removal of the tumors.
Time frame: 24 hours
Quantitative uptake of UPAR in tumor tissue
The patients will be PET scanned 1, 3 and 24 hours post injection of the radiotracer 64Cu-DOTA-AE105. These different timepoints will be used for assessment of tumor uptake of 64Cu-DOTA-AE105 will be assessed by PET scans 1, 3 and 24 hours post injection
Time frame: 24 hours
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