Predictors of BCR After RARP for Localized Prostate Cancer: A Retrospective Analysis

June 28, 2026 updated by: First Affiliated Hospital of Fujian Medical University

Predictors of Biochemical Recurrence After Robot-Assisted Radical Prostatectomy in Patients With Localized Prostate Cancer: A Retrospective Analysis

This retrospective study aims to identify predictive factors for biochemical recurrence (BCR) in patients with localized prostate cancer who underwent robot-assisted radical prostatectomy (RARP). BCR is defined as a rise in prostate-specific antigen (PSA) levels after surgery, which may indicate residual or recurrent disease.

We will analyze clinical, imaging, and pathological data from patients treated at Fujian Medical University Affiliated First Hospital between January 2024 and May 2026. Key variables include preoperative PSA, Gleason score, pathological T stage, surgical margin status, perineural invasion, prostate volume, MRI-based parameters (e.g., Pi-RADS score, SUVmax on PSMA PET/CT), and inflammatory markers.

Using logistic regression and machine learning approaches (random forest, XGBoost, SVM), we will develop and internally validate a predictive model to estimate individual BCR risk. The goal is to improve post-surgical risk stratification, guide personalized monitoring, and support clinical decision-making regarding adjuvant therapy.

This research has received ethical approval. Data will be anonymized and handled confidentially. Findings will be disseminated to inform clinical practice and future research.

Study Overview

Status

Not yet recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

All patients with localized prostate adenocarcinoma (clinical stage T1-T2, N0M0) who underwent robot-assisted radical prostatectomy (RARP) at Fujian Medical University Affiliated First Hospital between January 2020 and May 2026. Consecutive patients meeting eligibility criteria are included. No specific sampling frame or probability sampling method is applied.

Description

Inclusion Criteria:

  • Pathologically confirmed prostate adenocarcinoma

Clinical stage localized prostate cancer (T1-T2, N0M0)

Underwent robot-assisted radical prostatectomy (RARP)

Age ≥ 18 years

Complete clinical data including preoperative PSA, Gleason score, pathological T stage, and surgical margin status

At least one postoperative PSA measurement available to determine biochemical recurrence status

Signed informed consent for surgery and data use (or ethics committee waiver of consent for retrospective analysis)

Exclusion Criteria:

  • Received neoadjuvant endocrine therapy, radiotherapy, or chemotherapy prior to surgery

Concurrent active malignancy other than non-melanoma skin cancer

Preoperative evidence of lymph node metastasis (N+), distant metastasis (M1), or clinical stage T3-T4

Missing core predictors (e.g., preoperative PSA, Gleason score, pathological T stage) or insufficient postoperative PSA data to determine BCR status

Received adjuvant radiotherapy or adjuvant endocrine therapy before biochemical recurrence was determined

Severe cardiac, hepatic, or renal dysfunction, or life expectancy < 1 year

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
RARP Cohort
Consecutive patients with localized prostate cancer who underwent robot-assisted radical prostatectomy (RARP) at Fujian Medical University Affiliated First Hospital between January 2024 and May 2026. Patients are followed postoperatively for biochemical recurrence (BCR). Clinical, imaging, and pathological data are collected to identify predictors of BCR.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Biochemical Recurrence
Time Frame: From date of surgery until date of confirmed biochemical recurrence, assessed up to 76 months, from January 2020 to May 2026
Biochemical recurrence (BCR) is defined as a postoperative serum prostate-specific antigen (PSA) level of ≥0.2 ng/mL on two consecutive measurements, with the second measurement confirming the elevation. This is the primary outcome event for the study, used to distinguish patients with recurrence from those without recurrence during follow-up.
From date of surgery until date of confirmed biochemical recurrence, assessed up to 76 months, from January 2020 to May 2026

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

First Affiliated Hospital of Fujian Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

July 15, 2026

Primary Completion (Estimated)

July 20, 2026

Study Completion (Estimated)

September 30, 2026

Study Registration Dates

First Submitted

June 28, 2026

First Submitted That Met QC Criteria

June 28, 2026

First Posted (Actual)

July 6, 2026

Study Record Updates

Last Update Posted (Actual)

July 6, 2026

Last Update Submitted That Met QC Criteria

June 28, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 20260505112216735

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

This is a single-center retrospective study, and patient data confidentiality agreements restrict sharing of individual participant data.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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