mpMRI Compared to Diagnostic TURBT in Patients With Suspected Muscle-Invasive Bladder Cancer

Outcomes With Multi Parametric MRI (mpMRI) Compared to Diagnostic Transurethral Resection of Bladder Tumor (TURBT) in Patients With Suspected Muscle-Invasive Bladder Cancer - a Pilot Study

This is a pilot, single arm, prospective study that aims to validate the accuracy of the VI-RADS score obtained via multi-parametric magnetic resonance imaging (mpMRI) compared to pathologic cancer stage obtained via diagnostic transurethral bladder tumor resection (TURBT) as well as compare the clinical and quality of life outcomes between these diagnostic modalities in patients with suspected muscle-invasive bladder cancer (MIBC).

Study Overview

• Status: Recruiting
• Conditions: Muscle-Invasive Bladder Cancer; Urothelial Bladder Cancer
• Intervention / Treatment: Diagnostic test: mpMRI + Diagnostic TURBT

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Chao Family Comprehensive Cancer Center University of California, Irvine; Phone Number: 1-877-827-8839; Email: ucstudy@uci.edu
• Study Contact Backup: Name: University of California Irvine Medical; Email: marn@hs.uci.edu

Study Locations

• United States
  • California
    • Orange, California, United States, 92868
      • Recruiting
      • Chao Family Comprehensive Cancer Center University of California, Irvine
      • Contact: Nataliya Mar, MD; Phone Number: 1-877-827-8839; Email: ucstudy@uci.edu

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Age 18 years old or greater at the time of consent.
• Suspected muscle-invasive bladder cancer by tumor appearance on initial routine cystoscopy as determined by the UCI-affiliated provider performing this procedure.
• ECOG Performance Status of 0-3.
• Patients must have the ability to understand and the willingness to sign a written informed consent document (prior to the initiation of the study and any study procedures).
• Patients must be willing and able to comply with the scheduled visits, imaging plan, follow up plan, and other specified study procedures in the opinion of the Investigator.

Exclusion Criteria:

• Prior TURBT within 120 days of study entry.
• Prior therapy for bladder cancer within 180 days of study entry.
• Inability to tolerate mpMRI or associated contrast.
• Inability to tolerate TURBT or associated anesthesia.
• ECOG Performance Status of 4.
• Female patient who is known to be pregnant or breastfeeding.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: mpMRI + Diagnostic TURBT	Diagnostic test: mpMRI + Diagnostic TURBT; mpMRI in addition to the TURBT surgical procedure

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of concordance between VI-RADS score of 4 or 5 (i.e. muscular propria is likely or very likely) on mpMRI and pathologic muscularis propria invasion (i.e. pT2 tumor stage) on diagnostic TURBT.	VI-RADS is a five-point scoring system developed to standardize imaging and reporting of bladder tumor invasiveness on mpMRI. It predicts the degree of possible muscular propria invasion ("muscle-invasiveness") of bladder tumors. Once diagnostic TURBT is performed, the VI-RADS score from mpMRI will be compared to the pathologic tumor (T) stage from a diagnostic TURBT to assess for concordance.	Up to 1 year

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Progression free survival (PFS) with mpMRI compared to diagnostic TURBT	Time from diagnostic test to cancer progression, recurrence, or death.	up to 5 years
Time from intervention that determines invasiveness of bladder tumors (i.e. diagnostic TURBT versus mpMRI) to initiation of cancer-directed therapy		up to 5 years
Time from initial cystoscopy to intervention that determines invasiveness of bladder tumors (i.e diagnostic TURBT versus mpMRI).		up to 5 years
Incidence of adverse events with mpMRI versus diagnostic TURBT.		up to 5 years
Patient Quality of Life with mpMRI versus diagnostic TURBT.	As assessed by quality of life questionnaires	up to 5 years
Incidence of repeat TURBT.		up to 5 years
Diagnostic healthcare expenditure with mpMRI versus diagnostic TURBT	in dollars	up to 5 years

Collaborators and Investigators

• Sponsor: University of California, Irvine
• Investigators: Principal Investigator: Nataliya Mar, MD, Chao Family Comprehensive Cancer Center

Study record dates

Study Major Dates

• Study Start (Actual): March 27, 2024
• Primary Completion (Estimated): December 1, 2026
• Study Completion (Estimated): April 1, 2030

Study Registration Dates

• First Submitted: March 21, 2024
• First Submitted That Met QC Criteria: March 21, 2024
• First Posted (Actual): March 28, 2024

Study Record Updates

• Last Update Posted (Actual): May 4, 2026
• Last Update Submitted That Met QC Criteria: April 28, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Keywords: mpMRI; TURBT; VI-RADS score
• Additional Relevant MeSH Terms: Neoplasms; Urologic Neoplasms; Urogenital Neoplasms; Neoplasms by Site; Urologic Diseases; Urinary Bladder Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Male Urogenital Diseases; Urinary Bladder Neoplasms; Diagnostic Techniques and Procedures; Diagnosis; Tomography; Diagnostic Imaging; Magnetic Resonance Imaging; Multiparametric Magnetic Resonance Imaging
• Other Study ID Numbers: 4565; UCI 23-72 (Other Identifier: UCI CFCCC)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes