Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 3:44 AM
Ignite Modification Date:
2025-12-25 @ 3:44 AM
NCT ID:
NCT04857502
Brief Summary:
This exploratory study conducted under the RDRC program studies the biodistribution of 99mTc-PSMA-I\&S in patients with prostate cancer who undergo pelvic lymph node dissection. Prostate specific membrane antigen (PSMA)-targeted radio-guided surgery uses the preoperative intravenous administration of a PSMA-ligand called PSMA-imaging and surgery (I\&S) labeled with the gamma-emitter radioisotope Technetium-99m (99mTc). Giving 99mTc-PSMA-I\&S may detect PSMA-expressing lymph nodes during surgery using a gamma probe and may help guide doctors to detect prostate cancer that has spread to the lymph nodes.
Detailed Description:
PRIMARY OBJECTIVE:
I. To define the biodistribution of 99mTc-based PSMA imaging and surgery agent (99mTc-PSMA-I\&S) in normal and malignant tissues of patients with prostate cancer (PCa) with histopathology validation, when available.
SECONDARY OBJECTIVES:
I. To correlate the 99mTc-PSMA-I\&S accumulation within tumor lesions observed by in-vivo single-photon emission computed tomography (SPECT), ex-vivo gamma measurements and level of prostate-specific membrane antigen (PSMA) expression quantified by histopathology, when available.
II. To define the best time-point for radio-guided surgery (RGS) with the highest tumor-to-background ratio following 99mTc-PSMA-I\&S administration.
OUTLINE:
The first 5 patients receive an initial dose of 99mTc-PSMA-I\&S intravenously (IV) followed by 5 SPECT/CT scans at 3-5, 5-20, 17-21, 25-29, and 40-46 hours later. These 5 patients then receive a second dose of 99mTc-PSMA-I\&S IV and then undergo standard of care surgery. All subsequent patients receive one dose of 99mTc-PSMA-I\&S IV before surgery.
Study:
NCT04857502
Study Brief:
Protocol Section:
NCT04857502