This prospective trial aims to determine if enhanced prostate imaging using two novel imaging technologies (high resolution DWI and 18F-fluciclovine PET-MRI) will detect prostate cancers not seen on standard multiparametric prostate MRI in patients considered candidates for focal HIFU.
This is a prospective trial to evaluate the effectiveness of 18F-fluciclovine PET-hrMRI versus standard mpMRI at identifying prostate cancer targets for HIFU therapy. Participants with clinically localized, unilateral high grade prostate cancer (Gleason score 7-10 prostate cancer localized to one lobe on prior biopsies) OR at high risk for having unrecognized high grade prostate cancer (overall Gleason score 6 with \> half of systematic biopsy cores positive and \> 50% of core involvement in at least one core), interested in HIFU would receive both a standard mpMRI and 18F-fluciclovine PET-hrMRI. Participants would then undergo a mapping biopsy using a standard sextant template plus MRI/US-fusion targeted biopsy of any lesion suspicious lesion on mpMRI or PET-hrMRI.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
21
Imaging (comparing standard and experimental high resolution diffusion-weighted imaging \[DWI\] MRI with 18F-Fluciclovine)
Cedars-Sinai Medical Center
Los Angeles, California, United States
Number of Biopsy-proven Cancers (Gleason 6+) That Standard Imaging (mpMRI) Would Have Missed Compared With High Resolution Diffusion-weighted Imaging (DWI) PET-hrMRI on Mapping MRI.
A Gleason score of 6 is low grade, 7 is intermediate grade, and a score of 8 to 10 is high grade cancer. The Prostate Imaging Reporting and Data System (PI-RADS) is used to report how likely it is that a suspicious area is a clinically significant cancer. PI-RADS scores range from 1 (most likely not cancer) to 5 (very suspicious). Difference between sensitivities to identify prostate lesions. This is analyzed by the number of biopsy-proven cancerous zones (Gleason 6+) that mpMRI missed compared to PET or hrMRI (PIRADS) compared as follows: mpMRI vs hrMRI and PET (PIRADS 3-5 \& Gleason 7+) mpMRI vs hrMRI or PET (PIRADS 3-5 \& Gleason 7+) mpMRI vs hrMRI and PET (PIRADS 4-5 \& Gleason 7+) mpMRI vs hrMRI or PET (PIRADS 4-5 \& Gleason 7+) mpMRI vs hrMRI and PET (PIRADS 3-5 \& Gleason 6+) mpMRI vs hrMRI or PET (PIRADS 3-5 \& Gleason 6+) mpMRI vs hrMRI and PET (PIRADS 4-5 \& Gleason 6+) mpMRI vs hrMRI or PET (PIRADS 4-5 \& Gleason 6+)
Time frame: At time of post-imaging biopsy
Number of Biopsy-proven Cancers (Gleason 7+) That Standard Imaging (mpMRI) Would Have Missed Compared With High Resolution Diffusion-weighted Imaging (DWI) PET-hrMRI on Mapping MRI.
A Gleason score of 6 is low grade, 7 is intermediate grade, and a score of 8 to 10 is high grade cancer. The Prostate Imaging Reporting and Data System (PI-RADS) is used to report how likely it is that a suspicious area is a clinically significant cancer. PI-RADS scores range from 1 (most likely not cancer) to 5 (very suspicious). Difference between sensitivities to identify prostate lesions. This is analyzed by the number of biopsy-proven cancerous zones (Gleason 7+) that mpMRI missed compared to PET or hrMRI (PIRADS) compared as follows: mpMRI vs hrMRI and PET (PIRADS 3-5 \& Gleason 7+) mpMRI vs hrMRI or PET (PIRADS 3-5 \& Gleason 7+) mpMRI vs hrMRI and PET (PIRADS 4-5 \& Gleason 7+) mpMRI vs hrMRI or PET (PIRADS 4-5 \& Gleason 7+) mpMRI vs hrMRI and PET (PIRADS 3-5 \& Gleason 6+) mpMRI vs hrMRI or PET (PIRADS 3-5 \& Gleason 6+) mpMRI vs hrMRI and PET (PIRADS 4-5 \& Gleason 6+) mpMRI vs hrMRI or PET (PIRADS 4-5 \& Gleason 6+)
Time frame: At time of post-imaging biopsy
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Negative Biopsy Rate (Number of Participants With Negative Biopsy)
A Gleason score of 6 is low grade, 7 is intermediate grade, and a score of 8 to 10 is high grade cancer. The Prostate Imaging Reporting and Data System (PI-RADS) is used to report how likely it is that a suspicious area is a clinically significant cancer. PI-RADS scores range from 1 (most likely not cancer) to 5 (very suspicious). Following the tumor mapping study, patients with high grade disease (i.e. Gleason grade 4 or 5) in one lobe undergo hemigland or focal HIFU of that lobe. Patients would then undergo repeat prostate biopsy to assess the negative biopsy rate in the treated region.
Time frame: 6 months following standard HIFU therapy
Rate of High Grade Cancer (Number of Patients With High Grade Cancer)
A Gleason score of 6 is low grade, 7 is intermediate grade, and a score of 8 to 10 is high grade cancer. The Prostate Imaging Reporting and Data System (PI-RADS) is used to report how likely it is that a suspicious area is a clinically significant cancer. PI-RADS scores range from 1 (most likely not cancer) to 5 (very suspicious). Following the tumor mapping study, patients with high grade disease (i.e. Gleason grade 4 or 5) in one lobe undergo hemigland or focal HIFU of that lobe. Patients would then undergo repeat prostate biopsy to assess the absence of Gleason grade 4 or 5 in the untreated region.
Time frame: 6 months following standard HIFU therapy