Longitudinal Bladder Cancer Study for Tumour Recurrence

Recruiting

• Conditions: Urothelial Bladder Cancer

• Registration Number: NCT05080998
• Lead Sponsor: Pacific Edge Limited

Brief Summary

Surveillance for recurrence of urothelial carcinoma (UC) requires frequent cystoscopy, which is invasive, expensive and time-consuming. An accurate urinary biomarker has the potential to reduce the number of cystoscopies required during post-treatment surveillance. This is a prospective, single arm, multi-center study using the diagnostic CxBladder test with subjects previously diagnosed with primary or recurrent UC and who are undergoing a schedule of investigative cystoscopies and treatment for the possible recurrence of UC presenting to qualified sites. To evaluate the performance characterisitc of the CxBladder test, multiple consecutive urine samples will be collected during the course of surveillance.

Detailed Description

This is a multi-site study recruiting subjects from Veterans Affairs and other medical centers. Subjects will be prospectively recruited to an observational study to validate the performance characteristics of CxBladder Monitor test (Monitor) and the second-generation test, CxBladder Monitor Plus (Monitor+). The study will recruit low, intermediate, and high-risk surveillance subjects, defined as per American Urological Association (AUA) / Society of Urologic Oncology (SUO) guidelines 2016 amendment 2020, previously diagnosed with urothelial carcinoma (UC). Eligible subjects will include those under surveillance for recurrence of UC. A voided urine sample will be collected from each enrolled subject at each of 4 successive surveillance visits. The collected urine will be used for CxBladder testing and central urine cytology. The study will collect primary tumour tissue from the first confirmed tumour, i.e., the primary diagnosis of UC (if available) and any subsequent collections within 12 weeks. Tissue samples from any UC recurrences while in study will also be collected to genotype each tumour using RNA or DNA markers indicative of an elevated risk of UC. Monitor/Monitor+ results will not be reported to patients or physicians. This study primarily aims to clinically validate the performance characteristics (sensitivity, specificity, negative predictive value, positive predictive value, and test-negative rate) of the Cxbladder Monitor/Monitor+ test compared to the reference standard i.e., tumours observed by cystoscopy and confirmed by pathology over a maximum of 4 surveillance visits. Sites are required to be competent in recruiting and completing required test request forms, Case Report Forms (CRF) and sample collection in a professional manner in accordance with good clinical practice (GCP).

Study Timeline

• Study First Submitted: 2021-10-05
• Study First Submitted QC: 2021-10-05
• Study First Posted: 2021-10-18
• Study Start: 2022-06-08
• Status Verified: 2024-12
• Last Update Submitted: 2025-09-23
• Last Update Posted: 2025-09-29
• Primary Completion: 2026-05-30
• Study Completion: 2026-08-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 450

Inclusion Criteria

1. Low-, intermediate-, and high-risk surveillance subjects with a previous confirmed diagnosis or recurrence of urothelial carcinoma within the last 3 calendar years.
2. Subjects must agree to 4 successive study visits, including urine sample collection at each visit.
3. Physically able to provide a voided urine sample (a sample from catheterization is not eligible).
4. Able to give written informed consent
5. Able and willing to comply with study requirements
6. Aged 18 years or older

Exclusion Criteria

1. Total cystectomy of the bladder, subjects with neo-bladders or illeal conduits
2. Previous muscle invasive bladder tumour (pT2 or greater)
3. Known pregnancy

Deferral Criteria

1. Prior genitourinary manipulation (catheterisation, urethral dilation, cystoscopy, etc.) within 14 calendar days of the scheduled urine collection, study enrollment with urine sample collection for Cxbladder Monitor testing should be deferred until a minimum of 14 calendar days has passed since the procedure was performed.
2. Active urinary tract infection (UTI) within 14 calendar days of the scheduled urine collection, study enrollment with urine sample collection for Cxbladder Monitor testing should be deferred until the treatment is complete and the UTI is resolved.
3. If a subject has had intravesical immunotherapy or chemotherapy within the previous 6 weeks, study enrollment with urine sample collection for Cxbladder Monitor testing should be deferred. Study enrollment must be at least 28 calendar days post-last treatment.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
To clinically validate the performance characteristics of CxBladder Monitor/Monitor+	12 Months	To clinically validate the performance characteristics - sensitivity, specificity, negative predictive value (NPV), positive predictive value (PPV), and test-negative rate of Monitor and Monitor+ for the detection of recurrent UC in subjects with a recent history of urinary tract UC who are being treated according to standard of care and are concurrently undergoing routine investigative cystoscopy.

Trial Locations

Locations (7)

Miami VA Healthcare System; 🇺🇸 Miami, Florida, United States

James A. Haley Veteran's Hospital; 🇺🇸 Tampa, Florida, United States

Ralph H. Johnson VA Health Care System; 🇺🇸 Charleston, South Carolina, United States

UT Southwestern Medical Center; 🇺🇸 Dallas, Texas, United States

White River Junction Veterans Affair Medical Center; 🇺🇸 White River Junction, Vermont, United States

University of Washington School of Medicine; 🇺🇸 Seattle, Washington, United States

Monash Health - Moorabbin Hospital; 🇦🇺 Clayton, Victoria, Australia