Safety and Efficacy of PSMA-Targeted Fluorescent Contrast Agent DGPR1008 for Intraoperative Imaging in Robot-Assisted Radical Prostatectomy

Phase Ⅱ Clinical Study on the Safety and Efficacy of PSMA-Targeted Fluorescent Contrast Agent DGPR1008 for Intraoperative Imaging in Robot-Assisted Radical Prostatectomy

This study is a single-center, single-arm, open-label exploratory study to evaluate the safety and efficacy of fluorescent imaging combined with a robotic surgical control system for robot-assisted radical prostatectomy.

Inclusion Criteria:

• Subjects with pathologically confirmed prostate cancer via preoperative prostate core needle biopsy who are scheduled to undergo robot-assisted radical prostatectomy (RARP).
• Subjects must provide informed consent for the trial prior to enrollment, with a full understanding of the trial content, procedures and potential adverse events; they must be able to communicate effectively with investigators, comply with the trial protocol to complete the entire study, and voluntarily sign a written informed consent form.
• Male adult subjects aged 18 years or older (inclusive).
• Gleason total score ≥7, or radiological findings (transrectal ultrasound (TRUS) and/or prostate magnetic resonance imaging (MRI), computed tomography (CT) or prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT)) indicating clinical stage ≥T2.
• No hepatic or renal impairment: Hepatic function: Total bilirubin ≤2 × upper limit of normal (ULN) (except for Gilbert's syndrome), alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≤3 × ULN; Renal function: Creatinine clearance rate ≥50 mL/min/1.73 m² (calculated via the simplified MDRD equation).
• Subjects judged by the investigator to have no definite surgical contraindications and to be suitable for robot-assisted radical prostatectomy (RARP).
• Subjects and their partners/spouses must agree to have no childbearing or sperm donation plans from the screening period to 3 months after the trial completion, and voluntarily adopt effective contraceptive measures.

Exclusion Criteria:

• Subjects with an allergic diathesis (e.g., a known history of hypersensitivity to two or more drugs), a predisposition to allergic symptoms such as rashes or urticaria, or a known hypersensitivity to the study drug (including its ingredients).
• Subjects with clinically significant abnormal findings in screening tests that are judged by the investigator to affect the study; or those with comorbidities that pose a serious risk to subject safety or interfere with study completion (except for subjects whose conditions are judged by the investigator to be stable for enrollment).
• Subjects who have participated in other clinical trials and received investigational drugs or medical devices within 1 month prior to the administration of the study drug.
• Subjects who have received neoadjuvant therapy, radiotherapy, focal ablation therapy, hormonal therapy, androgen deprivation therapy, or other such treatments in the past 6 months.
• Subjects who are judged by the investigator to be ineligible for the study due to other circumstances.