Metastatic Castration-resistant Prostate Cancer Clinical Trial
Official title:
Safety and Dosimetry of 177Lu-P17-087/177Lu-P17-088 in Patients With Metastatic Castration-resistant Prostate Cancer
This is a pilot study to assess the safety and measure image-based absorbed dose of 177Lu-P17-087/177Lu-P17-088 in patients with metastatic castration-resistant prostate cancer (mCRPC) who will undergo radioliagnd therapy using 177Lu-P17-087/177Lu-P17-088. All patients underwent whole-body 68Ga-PSMA PET/CT for selection and accepted intravenous injection with single dose 1.1 GBq (30 mCi) of 177Lu-P17-087/177Lu-P17-088 within one week, then monitored at 1.5 hours, 4 hours, 24 hours, 48 hours, 72 hours, 120 hours and 168 hours after 177Lu-P17-087/177Lu-P17-088 administration with serial whole body planar and SPECT/CT imaging.
Prostate cancer is the most frequent malignant tumor in men worldwide. Prostate-specific membrane antigen (PSMA), is a surface molecule specifically expressed by prostate tumors which was shown to be a valid target for radiotherapy. 177Lu-PSMA-617, a urea-based compound, provide an effective target for the treatment of metastatic castration-resistant prostate cancer. However, a major problem in the therapeutic use of 177Lu-PSMA-617 has been its short half-life and fast rate of clearance. The investigators designed and synthesized a new radiopharmaceutical based on PSMA-11, P16-093. 68Ga-P16-093 showed higher tumor uptake and clear blood clearance than 68Ga-PSMA-617. Then, the investigators shynthesis a new therapeutic radiopharmaceutical based on P16-093, P17-087; and the investigators added a selected albumin binder into P17-088 to synthesis another new radiopharmaceutical, P17-088. This study was designed to investigate the safety, dosimetry and preliminary effects of 177Lu-P17-087/177Lu-P17-088 in patients with metastatic castration-resistant prostate cancer. ;
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