Analyzing the Urine During BCG Instillation in Bladder Cancer Patients for Disease Followup
NCT ID: NCT06153849
Last Updated: 2023-12-01
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
NOT_YET_RECRUITING
100 participants
OBSERVATIONAL
2023-12-01
2025-05-01
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Previously, it was believed that the urinary system was sterile; however, recent high-throughput sequencing and enhanced quantitative urine culture have confirmed the presence of resident bacteria in the urine of healthy individuals. Microorganisms within the bladder have the potential to alter the immune microenvironment, consequently impacting the efficacy of BCG instillation.
CIN denotes continuous errors in chromosome separation during cell division, encompassing numerical and structural instability. Loss of the Y chromosome (LOY) represents a specific type of CIN associated with cancer prognosis. CIN serves as a hallmark of malignancies and can be employed to indicate the presence of minimal residual disease (MRD) subsequent to TURBT. Analyzing LOY can better elucidate the disease's progression, and more exploration is necessary to comprehend the significance of detecting CIN for predicting tumor recurrence.
LC-WGS is a cost-effective, efficient, and robust technique that can be used to analyze both microorganism and human genomes in urine samples. The microbiome is commonly detected using 16S ribosomal sequencing. Compared to 16S sequencing, LC-WGS provides advantages such as enhanced detection of bacterial species, diversity, and improved gene prediction. In the context of CIN and LOY detection, LC-WGS technology offers heightened sensitivity, low cost, and high throughput compared to traditional methods such as comparative genomic hybridization or fluorescence in situ hybridization.
In this prospective, single-arm observational clinical trial, the investigators aim to evaluate LOY, CIN, and the urinary microbiome detected by LC-WGS for the assessment of BCG instillation efficacy and NMIBC follow-up.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Keywords
Explore important study keywords that can help with search, categorization, and topic discovery.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
COHORT
PROSPECTIVE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
BCG instillation patient
Patients with pathology-confirmed median to high risk urothelial carcinoma defined by 2023 EAU guideline, underwent transurethral resection of bladder tumor and receiving BCG instillation therapy.
urine sample collection
Urine samples from patients receiving BCG instillation was collected for LC-WGS to evaluate CIN and urinary microbiome.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
urine sample collection
Urine samples from patients receiving BCG instillation was collected for LC-WGS to evaluate CIN and urinary microbiome.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* Participants diagnosed with median to high risk NMIBC underwent TURBT and received BCG instillation therapy.
Exclusion Criteria
* Antibiotic treatment within the last month
* Immuno- /chemo- therapy within the past 6 months
* Immunosuppressive therapy
* Indwelling urinary catheter
* Additional major diagnosis known to affect the gut or bladder microbiota (e. g. liver cirrhosis, systemic sclerosis, inflammatory bowel disease, inflammatory bowel syndrome, celiac disease, neuropathic bladder)
* Participants with urothelial carcinoma accompanied by other malignancy.
* Individuals unwilling to sign the consent form or unwilling to provide urine sample for test or quality of urine sample is poor.
18 Years
99 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Changhai Hospital
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Shuxiong Zeng
M.D., Ph.D
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Changhai Hospital
Shanghai, Shanghai Municipality, China
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
References
Explore related publications, articles, or registry entries linked to this study.
Sansregret L, Vanhaesebroeck B, Swanton C. Determinants and clinical implications of chromosomal instability in cancer. Nat Rev Clin Oncol. 2018 Mar;15(3):139-150. doi: 10.1038/nrclinonc.2017.198. Epub 2018 Jan 3.
Krajewski W, Zdrojowy R, Grzegolka J, Krajewski P, Wrobel M, Luczak M, Kolodziej A. Does Mantoux Test Result Predicts BCG Immunotherapy Efficiency and Severe Toxicity in Non-Muscle Invasive Bladder Cancer. Urol J. 2019 Oct 21;16(5):458-462. doi: 10.22037/uj.v0i0.4542.
Babjuk M, Burger M, Capoun O, Cohen D, Comperat EM, Dominguez Escrig JL, Gontero P, Liedberg F, Masson-Lecomte A, Mostafid AH, Palou J, van Rhijn BWG, Roupret M, Shariat SF, Seisen T, Soukup V, Sylvester RJ. European Association of Urology Guidelines on Non-muscle-invasive Bladder Cancer (Ta, T1, and Carcinoma in Situ). Eur Urol. 2022 Jan;81(1):75-94. doi: 10.1016/j.eururo.2021.08.010. Epub 2021 Sep 10.
Ranjan R, Rani A, Metwally A, McGee HS, Perkins DL. Analysis of the microbiome: Advantages of whole genome shotgun versus 16S amplicon sequencing. Biochem Biophys Res Commun. 2016 Jan 22;469(4):967-77. doi: 10.1016/j.bbrc.2015.12.083. Epub 2015 Dec 22.
Han RF, Pan JG. Can intravesical bacillus Calmette-Guerin reduce recurrence in patients with superficial bladder cancer? A meta-analysis of randomized trials. Urology. 2006 Jun;67(6):1216-23. doi: 10.1016/j.urology.2005.12.014.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
CH-LC-WGS-BCGinstillation
Identifier Type: -
Identifier Source: org_study_id