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37 clinical studies listed.

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Prostate Cancer (Diagnosis)

Tundra lists 37 Prostate Cancer (Diagnosis) clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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COMPLETED

NCT04079699

Predicting Prostate Cancer in Elderly Men

We aim to analyze whether the "liquid biopsy" model could increase the specificity of detecting men with an aggressive (defined as Gleason score ≥ 7) prostate cancer and thereby reduce the proportion of men who undergo prostate biopsy, while at the same time maintaining the same sensitivity to detect aggressive prostate cancer as the PSA test alone. Using blood and urine biomarkers together with an algorithm, which incorporates the clinical data, we aim to identify patients who have a high risk of having an aggressive prostate cancer. By performing this non-invasive test we expect that we can reduce need for prostate biopsy and reduce the detection of patients with an indolent prostate cancer (defined by Gleason score ≤ 6). Thereby we aim to reduce the side effects of transrectal ultrasound guided biopsy of the prostate and side-effects of living with an indolent cancer.

Gender: MALE

Ages: 70 Years - Any

Updated: 2026-11-03

Prostate Cancer (Diagnosis)
RECRUITING

NCT07885423

68Ga-XMFH01 PET/Fluorescence Imaging in Prostate Cancer

This study aims to evaluate the feasibility, safety, and diagnostic performance of 68Ga-XMFH01, a novel ACP3-targeted dual-modality PET and fluorescence imaging probe, for preoperative PET/CT imaging and intraoperative fluorescence-guided surgery in patients with prostate cancer.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-10-26

1 state

Prostate Cancer (Diagnosis)
ACP3
PET / CT
NOT YET RECRUITING

NCT07760857

Investigation of an Intelligent Centre-adaptive Multi-modal Fusion Framework (Cad- MMFF) to Overcome Unnecessary Prostate Biopsies and Optimize MRI Utilization

This study aims to investigate a novel Centre-Adaptive Multi-Modal Fusion Framework (Cad-MMFF) that integrates clinical, ultrasound, and MRI data to improve the detection of clinically significant prostate cancer (csPCa), reduce unnecessary biopsies, and optimize MRI utilization.

Gender: MALE

Ages: 45 Years - Any

Updated: 2026-10-22

Prostate Cancer (Diagnosis)
RECRUITING

NCT07875192

Hugo™ Robotic Assisted Surgery (RAS) System in Prostatectomy Patients Treated in an ASC Setting

A Single-center Study of Robotic Prostatectomy Surgeries Performed using the Medtronic Hugo™ Robotic Assisted Surgery (RAS) System in an Ambulatory Surgical Center Setting

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-10-15

1 state

Prostate Cancer (Diagnosis)
RECRUITING

NCT07223385

High Cardiovascular Risk Intervention With Cardio-Oncology Consultation for Prostate Cancer Following Androgen Receptor Pathway Inhibitor (ARPI) Therapy (Heart-Safe)

In patients with prostate cancer (PC), cardiovascular disease (CVD) causes significant morbidity and is the second leading cause of death. Both pre-existing CVD and the use of androgen deprivation therapy (ADT)-a key cornerstone of treatment for men with locally advanced or metastatic PC1,2 contribute to increased CV risk. ADT has been associated with adverse metabolic effects, including increased central adiposity, elevated low-density lipoprotein (LDL) levels, impaired glycemic control, and arterial wall remodeling and endothelial dysfunction The data demonstrates that for most patients, the status quo is insufficient6 and there remains a critical gap in the early identification of high CV-risk PC patients who may benefit most from aggressive risk mitigation strategies. Mitigation strategies, like the addition of statins as primary prevention, have shown decrease in MI/CHD death across thousands of patients. Age-related expansion of hematopoietic clones carrying recurrent somatic mutations, termed clonal hematopoiesis of indeterminate potential (CHIP) has recently been identified as a significant driver of atherosclerosis, doubling the risk of coronary heart disease. Notably, while CHIP is detectable in \~10% of persons over 70 years old, it is enriched in patients with solid malignancies, and radiotherapy exposure is among the most decisive risk factors for developing CHIP12-15. The inflammation-related metabolic signals are activated androgen signaling and exacerbated in patients with CHIP. However, the mechanistic link and clinical consequence are less understood. Therefore, it is critical to study the CV impact of CHIP and metabolic perturbations in patients with PC treated with ARSI therapy. We plan to address these critical gaps by testing our innovative hypothesis that early cardio-oncology intervention with aggressive guidelines-based CV optimization during ARPI therapy will reduce CV risk and that CHIP and metabolomics will help identify adverse metabolic remodeling to improve CV risk prediction. Robust epidemiological and clinical trial data consistently demonstrate that patients with PC are poorly optimized from a CV risk modification perspective, and existing CV risk models do not perform well in patients with cancer. The data demonstrates that for most patients, the status quo is insufficient and there remains a critical gap in the early identification of high CV-risk PC patients who may benefit most from aggressive risk mitigation strategies.

Gender: MALE

Ages: 45 Years - Any

Updated: 2026-10-05

1 state

Prostate Cancer (Diagnosis)
Prostate Cancer Stage IV
CV Risk
RECRUITING

NCT07856017

Development of an Intraoperative Adaptive Biopsy System for Prostate Cancer: Integrating Imaging Navigation With Metabolic Feedback for Dynamic Decision-Making

Development of an Intelligent System Integrating Preoperative Imaging and Real-Time Intraoperative Metabolic Feedback to Dynamically Optimize Biopsy core Placement for Individualized Precision Sampling.

Gender: MALE

Ages: 55 Years - Any

Updated: 2026-10-02

Prostate Cancer (Adenocarcinoma)
Prostate Cancer (Diagnosis)
NOT YET RECRUITING

NCT07846592

Real-time Fluorescence Microscopy for Intraoperative Assessment of Prostate Biopsy Cores (FLASH)

Current prostate cancer diagnosis relies on MRI-targeted biopsy combined with a 12-core systematic biopsy. The systematic component is a major driver of overdiagnosis of insignificant cancer and biopsy-related morbidity, and conventional pathology takes 1-2 weeks, causing significant patient anxiety. The EndoScell system is a handheld, real-time fluorescence microscope that can display the microscopic structure of a fresh biopsy core within minutes, without damaging the tissue. In this study, every biopsy core from men undergoing standard combined (targeted plus systematic) prostate biopsy will be scanned with this device immediately after removal, and the result will be compared with the final conventional pathology report of the very same core. The device result will not be used to guide any patient care. The study will measure how accurate the device is and simulate how many systematic biopsies could safely be avoided in the future if a positive device reading were used to stop further sampling.

Gender: MALE

Ages: 40 Years - Any

Updated: 2026-09-29

Prostate Cancer (Diagnosis)
Prostatic Neoplasms
NOT YET RECRUITING

NCT07844304

CascadeDiagnose Prostate MRI

This multicenter clinical study is evaluating CascadeDiagnose Prostate MRI, an artificial-intelligence software tool that analyzes standard prostate MRI scans-T2-weighted, diffusion-weighted, and ADC images-to help radiologists detect suspicious prostate lesions, estimate cancer risk, and distinguish prostate cancer from benign conditions. The study will take place at six hospitals in Guangxi and plans to enroll at least 2,000 eligible men aged 18 or older who have had prostate MRI and have confirmed pathology results. It includes a retrospective phase using existing records and a prospective phase in which participants provide written informed consent. The main goals are to measure the system's diagnostic accuracy (AUC, sensitivity, and specificity), compare it with readings by radiologists, assess safety and rates of rejected or indeterminate results, and see whether it improves reading efficiency or helps reduce unnecessary biopsies. To protect patient privacy, raw MRI, medical-record, and pathology data remain inside each hospital; only de-identified, encrypted intermediate results are shared through a secure distributed network. The study requires ethics approval and trial registration before enrollment, and its results may help determine whether this AI tool is safe and effective for clinical use.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-09-28

1 state

Prostate Cancer (Diagnosis)
ENROLLING BY INVITATION

NCT07690306

Development and Validation of a Non-Invasive AI Diagnostic Model for Prostate Cancer Using Multiparametric MRI and PSMA PET/CT

Prostate cancer is one of the most common malignancies in men. Currently, due to the limited diagnostic accuracy of existing imaging tests, there is a risk of missed diagnosis or unnecessary prostate biopsy. This study aims to develop and validate a non-invasive artificial intelligence (AI) diagnostic model using two advanced imaging techniques: multiparametric MRI (mpMRI) and PSMA PET/CT. By integrating information from both imaging modalities, the AI model is expected to improve the diagnostic accuracy of prostate cancer, reduce unnecessary biopsies, and assist physicians in making better clinical decisions. This is a retrospective, multicenter study that plans to collect imaging and pathology data from approximately 1,000 to 1,500 patients across six major hospitals in China. The diagnostic performance of the model will be evaluated, including its ability to identify clinically significant prostate cancer and its value in assisting diagnosis in patients with PSA levels in the gray zone (4-20 ng/mL).

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-09-15

5 states

Prostate Cancer (Diagnosis)
NOT YET RECRUITING

NCT07808528

Advanced Diffusion Magnetic reSonance Prostate Imaging for Reducing Extraneous Biopsies (ASPIRE) - Calibration Component (Multi-centre Scanner Calibration) and Validation Component (Multi-centre Validation)

In 2019 the UK National Institute for Health and Care Excellence (NICE) updated its guidelines to recommend Magnetic Resonance Imaging (MRI) for all patients prior to biopsy as it permits the targeted sampling of suspicious lesions rather than blind systematic biopsy, thereby improving detection of clinically significant prostate cancer while avoiding some unnecessary biopsies. However, there is still the major clinical problem of patients who have an 'MRI suspicious' lesion ultimately having no clinically significant cancer on biopsy. It was calculated that even by using MRI, up to 50% of prostate biopsies may be unnecessary. Prostate biopsies carry many risks and burdens for patients so reducing unnecessary biopsies is therefore a critical unmet need in prostate cancer diagnostics. The ASPIRE study has been designed to enable the safe implementation of advanced diffusion MRI into the prostate cancer diagnostic pathway. This study will compare 3 different advanced diffusion MRI sequences, Vascular, Extracellular, and Restricted Diffusion for Cytometry in Tumours (VERDICT), fast-VERDICT or Restriction Spectrum Imaging (RSI) to discover which one is superior in identifying patients who can safely avoid a biopsy. The study is also separated into 3 distinct components. Firstly, there is an optional component which, once these advanced diffusion sequences have been programmed onto MRI scanners, will recruit local volunteers who were already planning to have to routine MRI as a quality assurance measure. Component 1 (Calibration) is concerned with calibrating the same participants scans over more than one site to enable direct comparison of measurements. Patients under active follow up or previously diagnosed cancer should be enrolled in this component. Component 2 (Validation) sees a participant receiving a standard MRI scan as well as the new advanced diffusion sequences to evaluate the new tests against the reference standard without altering the standard-of-care management.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-09-09

Prostate Cancer (Diagnosis)
RECRUITING

NCT07054346

Comparison of 177Lu-PSMA-617 and 225Ac-PSMA-617

There is evidence that Actinium-225 Prostate-Specific Membrane Antigen (225Ac-PSMA) has a potentially higher level of efficacy than 177 Lutetium Prostate-Specific Membrane Antigen (177Lu-PSMA) as a radioligand therapy. This single center, pilot study will compare differences in the mechanisms of actinium-225 and lutetium-177 radioligand therapies (RLT) in participants with high or very high risk localized or locoregional prostate cancer planning on undergoing a prostatectomy.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-08-28

1 state

Prostate Cancer
Prostate Cancer (Diagnosis)
High-risk Prostate Cancer
+2
RECRUITING

NCT07454603

A Single-arm, Multicenter Prospective Study to Evaluate the Diagnostic Performance of PROSTest in Men With PSA ≥ 3ng/ml Using Biopsy as the Sole Ground Truth

This prospective observational study will enroll men referred for prostate biopsy due to elevated PSA and/or abnormal digital rectal examination, with or without pre-biopsy MRI. Peripheral blood will be collected prior to biopsy for PROSTest analysis. Biopsy histopathology will serve as the reference standard. PROSTest results will be analyzed blinded to pathology.

Gender: MALE

Ages: 45 Years - 80 Years

Updated: 2026-08-21

1 state

Prostate Cancer
Urology
Prostate Cancer (Diagnosis)
RECRUITING

NCT07615101

Investigating the Safety and Diagnostic Performance of 68Ga-NYM032 Injection PET/CT in Men With Newly Diagnosed Prostate Cancer.

The investigators are imaging patients with newly diagnosed prostate cancer using a new Positron Emission Tomography (PET) imaging agent (68Ga-NYM032) in order to evaluate the safety and diagnostic performance.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-08-17

1 state

Prostate Cancer (Diagnosis)
NOT YET RECRUITING

NCT07766122

Analysis of the Performance of PSMA Emission Tomography in Patients With Prostate Cancer Treated With HIFU

There would appear to be a strong interest in functional nuclear imaging for assessing the response to focal PaC treatment. Investigator team hypothesise that the diagnostic performance of PSMA PET is noninferior to that of MRI in detecting clinically significant recurrent PaC after treatment with HIFU. The main objective was to evaluate the diagnostic performance of PSMA PET compared with MRI with reference to the gold standard of prostate biopsy one year after HIFU.

Gender: MALE

Ages: 70 Years - Any

Updated: 2026-08-14

Prostate Cancer - Recurrent
Prostate Cancer (Diagnosis)
RECRUITING

NCT07578324

TENS During Transperineal Prostate Biopsy

Transperineal prostate biopsy is a safe and effective method of diagnosing prostate cancer. When performed under local anaesthesia in an outpatient setting, it can cause significant pain, particularly during the periprostatic nerve block - the injection of local anaesthetic around the prostate. Better pain management during this procedure may improve patient comfort and encourage wider use of the transperineal approach. Transcutaneous electrical nerve stimulation (TENS) is a non-invasive, low-cost method of pain relief that works by delivering mild electrical impulses through the skin. A preceding pilot study at our centre (n=84) found that TENS used alongside local anaesthesia was associated with significantly lower pain scores during periprostatic nerve block and biopsy sampling, with no device-related complications. This study aims to confirm these findings in a larger, formally powered, triple-blind, randomized controlled trial. Participants will be randomly assigned to receive either active TENS or sham TENS (electrodes applied but no electrical current delivered) in addition to standard local anaesthesia. Neither the participant nor the operating urologist will know which group the participant is in. Pain scores are written down by the participant himself, so nobody asks him for a number during the procedure. Stimulation may feel strong, weak or not noticeable at all, and feeling nothing does not mean a participant is in the inactive group. Pain intensity will be assessed at four stages of the procedure using a 0-10 numeric rating scale. Participants will be followed up at 30 days after the biopsy.

Gender: MALE

Ages: 40 Years - Any

Updated: 2026-08-13

1 state

Prostate Cancer (Diagnosis)
Prostate Biopsy
Pain, Procedural
RECRUITING

NCT07755592

miRNA Panel for PCa Diagnosis

This is a single-center, prospective diagnostic accuracy trial conducted at Renji Hospital, Shanghai Jiao Tong University School of Medicine, led by a team of urology and molecular medicine researchers. A total of 500 male participants aged 18 years or older who meet clinical indications for prostate biopsy will be enrolled between May 2026 and May 2027. All participants have suspected prostate cancer (PCa) based on abnormal prostate-specific antigen (PSA), abnormal digital rectal examination (DRE), suspicious multiparametric MRI (mpMRI), positive family history of prostate cancer, pathogenic gene mutations, or other high-risk clinical findings. Men with confirmed treated prostate cancer, recent prostate-related procedures, active other malignancies, severe organ dysfunction, coagulation disorders, or cognitive impairment that prevents informed consent will be excluded. The core goal of this study is to test the diagnostic performance of a novel non-invasive blood test using a panel of circulating microRNAs (miRNAs) from serum, and compare it with the standard PSA-based screening tools to distinguish prostate cancer from benign prostatic hyperplasia (BPH). The gold standard for judging true disease status will be pathology results from transrectal ultrasound-guided prostate biopsy. Researchers will calculate key diagnostic metrics including sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and area under the ROC curve (AUC) for the miRNA panel. Secondary analyses will evaluate whether combining the miRNA signature with PSA or mpMRI improves diagnostic accuracy, especially for men with PSA levels in the ambiguous "gray zone" of 4-10 ng/mL. Subgroup assessments will also test how well the miRNA panel differentiates low-risk versus high-risk prostate cancer and clinically significant versus insignificant tumors across different PSA tiers, age groups, mpMRI risk scores and prostate sizes. Additional laboratory testing will confirm the stability of serum miRNAs under different storage temperatures and storage durations, as well as test consistency across operators, reagent batches and detection platforms to validate real-world clinical usability. For participants, the study only involves a one-time fasting venous blood draw of up to 10 mL before biopsy, with no extra invasive procedures or experimental medications added to routine clinical care. The free miRNA test results can serve as supplementary evidence to help doctors judge whether a prostate biopsy is truly necessary, potentially sparing many patients from unnecessary invasive biopsy and its associated discomfort or complications. All blood samples will be stored under standardized biosafety protocols with de-identified personal data to fully protect participant privacy. Minimal risks include minor temporary bruising or slight pain at the blood draw site, which resolve spontaneously without long-term harm. Statistical analysis will use three defined datasets (full analysis set, per-protocol set, safety set) and advanced methods including DeLong's test, logistic regression, NRI and IDI to quantify diagnostic improvement versus PSA. A 70% training cohort will build the miRNA diagnostic model, and the remaining 30% of samples will act as an independent validation group to verify model reliability. Safety monitoring will record all adverse events throughout follow-up, with strict ethical oversight following the Declaration of Helsinki and Chinese biomedical research regulations. After sample testing, data analysis and result summarization finish by October 2027, the research team plans to publish 1-2 peer-reviewed SCI papers to share findings globally. If validated, this serum miRNA panel will provide a more precise, non-invasive screening tool to reduce overdiagnosis and unnecessary prostate biopsies, optimize early prostate cancer detection, and lower overall medical burdens for men at risk of prostate disease in clinical practice.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-08-11

Prostate Cancer (Diagnosis)
RECRUITING

NCT07144228

Validation of a Platelet Proteomic Assay for Diagnosing and Monitoring Prostate Cancer

This is a single center study evaluating whether a new blood test based on platelet proteins rather than plasma proteins can improve detection of prostate cancer and evaluate the degree of serious disease. Currently, doctors rely on multiple tests such as PSA, MRI scans and biopsies to do the same evaluation. Researchers are trying to see if HeLP™ can be a safe and accurate alternative. The study is inviting men who are being seen for suspicion of prostate cancer (based on symptoms or previous lab results). If they agree to be in the study, the research team will take a sample of their blood at the time they are getting a repeat PSA test or having Imaging. The research test does not affect the care they are already receiving and takes 3 extra tubes of blood (\~3 tbsp). The research team is aiming to include 300 participants total. They believe 278 people are needed to confidently compare results between people with and without prostate cancer. They will do an interim analysis halfway through the study, once samples from 150 subjects have been collected. The research is considered low risk-no more uncomfortable or dangerous than a blood draw. There is a risk of loss of privacy, but researchers are taking strong steps to protect privileged information. That includes proper data handling, secure, storage, and making sure the study team is trained in research ethics.

Gender: MALE

Ages: 40 Years - Any

Updated: 2026-08-06

1 state

Prostate Cancer (Diagnosis)
RECRUITING

NCT07567027

Improving Cryoablation Efficacy With BARRigel Rectal Spacing (ICE-BARR)

The purpose of this study is to evaluate the feasibility, safety, and potential protective benefit of Barrigel, a hyaluronic acid-based rectal spacer, in patients undergoing prostate cryoablation for localized or recurrent prostate cancer. The primary aim is to assess Barrigel thermal stability during cryoablation.

Gender: MALE

Ages: 40 Years - 95 Years

Updated: 2026-07-09

1 state

Prostate Cancer (Diagnosis)
Transperineal Cryoablation
ACTIVE NOT RECRUITING

NCT07683182

Intraprostatic Anesthesia During Transperineal Prostate Biopsy

Transperineal prostate biopsy has become the standard method for diagnosing prostate cancer because of its favorable safety profile and low infectious complication rates. However, pain and discomfort during the procedure remain important concerns that may negatively affect patient satisfaction and willingness to undergo repeat biopsy when necessary. This prospective randomized controlled study aims to evaluate whether the addition of intraprostatic local anesthesia to standard perineal local anesthesia reduces pain during transperineal prostate biopsy. Fifty patients undergoing prostate biopsy under local anesthesia will be randomized into two groups. The first group will receive standard perineal local anesthesia, while the second group will receive additional intraprostatic local anesthesia. Pain severity will be assessed before, during, and after the procedure using a visual analog scale (VAS). Anxiety and depression levels will be evaluated preoperatively using the Hospital Anxiety and Depression Scale (HADS). Patient-related factors, procedural characteristics, and post-procedural outcomes will also be recorded to identify factors associated with pain perception. The results of this study may help optimize local anesthesia techniques and improve patient comfort during transperineal prostate biopsy.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-07-06

1 state

Prostate Cancer (Diagnosis)
Prostate-Specific Antigen
NOT YET RECRUITING

NCT07620717

Early Diagnosis of PROstate CANcer for Black Men

PROCAN-B+ is a mixed-methods, two-arm, multi-centre randomised controlled trial evaluating a co-designed, peer-led intervention to encourage informed help-seeking and engagement with prostate cancer health checks and Prostate Specific Antigen (PSA) testing among Black men aged 45 years and over with no history of prostate cancer. The study will recruit 300 participants across three UK sites: North East England including Leeds, Scotland, and London. Following eligibility screening and baseline data collection, participants will be individually randomised in a 1:1 ratio to either the intervention or wait-list control arm by an independent clinical trials unit. Participants allocated to the intervention arm will attend a two-hour co-designed community-based workshop shortly after randomisation, while participants allocated to the control arm will be invited to attend the workshop following the 6-month follow-up period. Due to the nature of the intervention, participants and researchers will not be blinded to allocation. The intervention was co-designed in partnership with Black men and includes peer-led discussions on barriers to early diagnosis of prostate cancer, health education delivered by a Black GP, activities aimed at supporting effective communication with healthcare professionals, and video testimonials from prostate cancer survivors, women, and religious leaders. Primary outcomes include self-reported discussions with GPs relating to prostate cancer risk, self-reported PSA testing, and GP-recorded PSA testing where participant consent is provided. Secondary outcomes include knowledge of prostate cancer, attitudes towards prostate cancer health checks and PSA testing, and help-seeking behaviours. Data will be collected at baseline, 3-month, and 6-month follow-up. A qualitative process evaluation involving participants, peer facilitators, and professionals will explore experiences and acceptability of the intervention and inform future implementation and scale-up.

Gender: MALE

Ages: 45 Years - Any

Updated: 2026-06-02

Prostate Cancer (Diagnosis)
RECRUITING

NCT07614256

Multimodal Imaging and Digital Pathology for Prostate Cancer Prediction

This is a multicenter observational study. A deep learning model integrated with multimodal imaging and digital pathology spatial registration is built based on preoperative multiparametric magnetic resonance imaging, transrectal ultrasound and postoperative digital pathological whole slide images. The study is designed to achieve accurate prediction of clinically significant prostate cancer and non-invasive risk stratification. Unnecessary prostate biopsy and overdiagnosis can be reduced to support the optimization of clinical diagnosis and treatment strategies.

Gender: MALE

Ages: 40 Years - 90 Years

Updated: 2026-05-29

1 state

Prostate Cancer (Diagnosis)
Clinically Significant Prostate Cancer
RECRUITING

NCT07559201

Theranostic Applications of Radionuclides in Prostate Cancer

The objective of the study is to construct a noninvasive approach ACP3 targeted PET/CT to detect tumor lesions in patients with prostate cancer and to compare with PSMA/FDG PET/CT.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-04-30

1 state

Prostate Cancer (Diagnosis)
RECRUITING

NCT07553754

Plasma Exosomal RNA Signature for Prostate Cancer Bone Metastasis

Brief Summary: This prospective, multicenter study aims to discover, develop, and validate a plasma exosomal RNA-based signature as a rule-out test for predicting bone metastasis in prostate cancer, using baseline treatment-naïve PSMA PET as the gold standard. The study is designed in four sequential phases: Phase 1 (Discovery, n=250): High-throughput sequencing of plasma exosomal RNAs to identify differentially expressed candidate RNAs. Phase 2 (Model Development, n=300): Digital droplet PCR (ddPCR) analysis of candidates in an independent cohort to construct and lock the final multi-RNA predictive signature using appropriate machine learning methods. Phase 3 (Internal Validation, n=300): Independent validation of the locked signature in a consecutive cohort reflecting natural disease prevalence. Phase 4 (External Validation, n=150): Final independent validation in a multi-center cohort enriched for bone metastasis. Primary Outcome: To evaluate the diagnostic performance of the signature as a rule-out test for PSMA PET-defined bone metastasis. The primary performance metrics are: Sensitivity, with a prespecified target of ≥95% (to ensure minimal false negatives). Specificity at the threshold that achieves the ≥95% sensitivity. A specificity of ≥30% will be considered supportive of clinical utility. A specificity of ≥30% (or a lower bound of the 95% confidence interval exceeding 20%) will be considered supportive of clinical utility. Need: Current biomarkers lack sensitivity and specificity for early detection of bone metastasis. More importantly, existing tools lack adequate negative predictive value to safely rule out bone metastasis in low-risk patients, leading to over-imaging or delayed detection. There is an urgent need for a non-invasive rule-out test to safely defer PSMA PET/CT in very-low-risk patients. Plasma exosomal RNAs offer a promising liquid biopsy approach, but prospective multicenter studies with rigorous validation are lacking. Secondary Outcomes: 1. Secondary metrics include negative predictive value (NPV), positive predictive value (PPV), area under the ROC curve (AUC), calibration, and decision curve analysis. 2. Correlation between exosomal RNA levels and number of bone metastatic lesions (PSMA PET). 3. Association with PSA, PSMA PET SUVmax, and MRI findings. 4. Tissue-plasma correlation to confirm tumor origin (exploratory). 5. Mechanistic exploration of key candidates via in vitro/in vivo assays (exploratory). 6. Subgroup analyses by hormone sensitivity, metastatic pattern, Gleason grade (exploratory). Inclusion Criteria: 1. Histologically confirmed prostate cancer scheduled for baseline PSMA PET. 2. PSMA PET performed prior to any prostate cancer-related treatment. 3. Blood samples collected prior to any treatment AND prior to prostate biopsy. 4. Willing to undergo prostate biopsy if clinically indicated (after blood collection). 5. Written informed consent. 6. Age ≥18 years. Exclusion Criteria: 1. Any prior prostate cancer treatment before baseline PSMA PET. 2. Blood samples collected after prostate biopsy. 3. Other active malignancy within past two years (excluding non-melanoma skin cancer). 4. Inadequate blood sample quality or quantity. 5. Severe comorbidities interfering with study conduct.

Gender: MALE

Ages: 18 Years - Any

Updated: 2026-04-28

3 states

Prostate Cancer (Diagnosis)
Bone Metastasis
PSMA PET
+4
RECRUITING

NCT07552285

The Enhancement of Diagnostic and Grading Efficacy of Prostate Cancer by New MRI Sequences: A Prospective Observational Study Based on New MRI Sequences in a Single Center

The goal of this clinical trial aims to explore the diagnostic efficacy and grading of prostate cancer by a novel MRI sequences such as MAGiC,OGSE,CEST,IVIM,etc.The main question it aims to answer is: Can the novel non-contrast multiparametric MRI imaging improve the accuracy of diagnosis and grading of prostate cancer? For patients with clinical suspicion of prostate cancer, both conventional and new sequences magnetic resonance scans are conducted, with surgical or biopsy pathological results serving as the gold standard.

Gender: MALE

Ages: 20 Years - 90 Years

Updated: 2026-04-27

1 state

Prostate Cancer
Prostate Cancer (Diagnosis)