Bladder (Urothelial, Transitional Cell) CancerNCT07589413
Association Between Irrigation Fluid Absorption and Perioperative cfDNA Dynamics After TURBT
An observational study of Bladder (Urothelial, Transitional Cell) Cancer and Bladder Cancer Recurrence, run by Zhiping Wang at 1 site in China.
Trial summary
This prospective observational cohort study aims to evaluate the association between intraoperative irrigation fluid absorption and perioperative cell-free DNA (cfDNA) dynamics in patients undergoing transurethral resection of bladder tumor (TURBT). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Bladder (Urothelial, Transitional Cell) Cancer, Bladder Cancer Recurrence, Progression of Bladder Cancer
- What is being tested?
- Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA Profiling
- How many people
- 150 participants
- Where
- 1 siteChina
- Study dates
- 1 Apr 2026to 1 Apr 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: This study will include adults aged 18 years or older with suspected or confirmed bladder urothelial carcinoma who are scheduled to undergo TURBT at the Second Hospital of Lanzhou University. Eligible participants must be able to provide sufficient peripheral blood samples for cfDNA extraction and mutation analysis. Postoperative pathological diagnosis will be used to confirm eligibility for the final analysis when applicable. Patients will receive standard clinical management, and participation in this observational study will not affect treatment decisions.
Who may be able to join
- Age 18 years or older.
- Suspected or histologically confirmed urothelial carcinoma of the bladder.
- Scheduled to undergo TURBT.
- Availability of sufficient peripheral blood samples for cfDNA extraction and mutation analysis.
- Availability of complete clinicopathological and perioperative data.
- Ability to provide informed consent and comply with study follow-up.
Who cannot join
- Non-urothelial bladder malignancy confirmed by pathology.
- History of other malignant tumors within the past 5 years, except adequately treated non-melanoma skin cancer or carcinoma in situ of the cervix.
- Previous radical cystectomy or systemic antitumor therapy before enrollment.
- Inadequate blood sample quality or insufficient DNA yield for mutation analysis.
- Pregnancy or breastfeeding.
- Serious uncontrolled intercurrent illness that may interfere with study participation, follow-up, or compliance, including active infection, symptomatic congestive heart failure, unstable angina, clinically significant arrhythmia, severe psychiatric illness, or other conditions judged by the investigator to make participation unsuitable.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
The Second Hospital of Lanzhou University
Lanzhou, Gansu, 730030
Hongqin Zhao, Master of Medicine, +86 13830170665, 1372389220@qq.com
About this study
Official title: A Predictive Model for Recurrence and Progression Risk After TURBT for Bladder Cancer on Intraoperative Irrigation Fluid Absorption Volume and Perioperative cfDNA Levels
This prospective observational cohort study aims to evaluate the association between intraoperative irrigation fluid absorption and perioperative cell-free DNA (cfDNA) dynamics in patients undergoing transurethral resection of bladder tumor (TURBT). Eligible patients with suspected or confirmed bladder cancer scheduled for TURBT will be enrolled. Intraoperative irrigation fluid absorption volume will be recorded, and peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis.
The study will assess whether irrigation fluid absorption volume is associated with changes in cfDNA concentration, tumor-related mutation detection, and clinicopathological features, including tumor stage, grade, size, number, invasion depth, concomitant carcinoma in situ, operative time, resection depth, and intraoperative blood loss. Patients will also be followed for postoperative recurrence, progression, metastasis, and other adverse oncological outcomes.
This study may provide preliminary evidence for understanding perioperative tumor-related molecular changes during TURBT and may help improve risk stratification, perioperative management, and postoperative follow-up strategies for patients with bladder cancer.
Read the detailed description
Bladder cancer is one of the most common malignancies of the urinary system. Non-muscle-invasive bladder cancer accounts for the majority of newly diagnosed cases. Transurethral resection of bladder tumor (TURBT) is the standard procedure for the diagnosis, staging, and initial treatment of bladder cancer, particularly non-muscle-invasive bladder cancer. However, postoperative recurrence and progression remain common in some patients, especially those with high-risk pathological features.
During TURBT, mechanical resection, electrosurgical thermal injury, and continuous bladder irrigation may lead to tumor cell shedding and the release of tumor-derived molecular components into the irrigation fluid. Disruption of the mucosal and vascular barriers, opening of venous sinuses, increased intravesical pressure, and absorption of irrigation fluid may theoretically facilitate the entry of tumor-related components into the circulation. Although previous studies have mainly focused on intravesical tumor cell implantation and local recurrence, the relationship between intraoperative irrigation fluid absorption, perioperative cfDNA dynamics, and postoperative oncological outcomes remains insufficiently understood.
In this prospective observational cohort study, patients undergoing TURBT for suspected or confirmed bladder cancer will be enrolled. Intraoperative irrigation fluid absorption volume will be measured and recorded. Peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis using a multiplex mutation detection system based on nucleic acid mass spectrometry. Tumor tissue mutation status will also be evaluated when available.
The primary objective is to determine whether the volume of intraoperative irrigation fluid absorption is associated with perioperative changes in plasma cfDNA levels and tumor-related mutation detection. Secondary objectives include evaluating the association of cfDNA dynamics and irrigation fluid absorption with clinicopathological characteristics, including tumor stage, grade, size, number, invasion depth, concomitant carcinoma in situ, operative time, resection depth, and blood loss. Postoperative recurrence, progression, metastasis, and other adverse oncological outcomes will be assessed during follow-up.
The study is observational and will not alter standard clinical treatment decisions. The findings may help clarify perioperative molecular changes associated with TURBT and provide preliminary evidence for improving risk stratification and individualized postoperative surveillance in patients with bladder cancer.
- Conditions
- Bladder (Urothelial, Transitional Cell) Cancer, Bladder Cancer Recurrence, Progression of Bladder Cancer, Transurethral Resection of Bladder Tumor, Urothelial Carcinoma of the Bladder
- Being tested
- Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA Profiling
- Keywords
- bladder cancer, nucleic acid mass spectrometry, TURBT, urothelial carcinoma, cell-free DNA, irrigation fluid absorption, circulating tumor DNA, mutation profiling, recurrence, progression
- Medical subject headings
- Neoplasms, Urinary Bladder Neoplasms, Carcinoma, Transitional Cell, Recurrence, Disease Progression
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA ProfilingOther
This is an observational exposure assessment. Intraoperative irrigation fluid absorption volume will be recorded during TURBT using a dedicated measurement system. Peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis. Tumor tissue mutation status will be assessed when available. No active therapeutic intervention, treatment modification, or change in clinical decision-making will be performed as part of this study.
| Study group | Role | What they receive |
|---|---|---|
| Patients Undergoing TURBT for Bladder Cancer | Adult patients with suspected or confirmed bladder urothelial carcinoma who are scheduled to undergo TURBT will be enrolled. Intraoperative irrigation fluid absorption volume, perioperative plasma cfDNA levels, mutation status, clinicopathological features, and postoperative oncological outcomes will be collected and analyzed. Receives: Other: Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA Profiling |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Plasma cfDNA Level From Before TURBT to Within 24 Hours After TURBT
The primary outcome is the perioperative change in plasma cfDNA level, calculated by comparing cfDNA concentration before TURBT and within 24 hours after TURBT. The association between intraoperative irrigation fluid absorption volume and cfDNA change will be evaluated.
Measured: From preoperative blood collection to within 24 hours after TURBT
Secondary outcomes (1)
Detection Rate of Tumor-Related Mutations in Perioperative cfDNA
The detection rate of bladder cancer-related mutations in plasma cfDNA before and after TURBT will be assessed using a multiplex mutation detection system based on nucleic acid mass spectrometry.
Measured: From preoperative blood collection to within 24 hours after TURBT
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 May 2026
- Study start1 Apr 2026
- Primary completion1 Apr 2027 (estimated)
- Study completion1 Apr 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Bladder (Urothelial, Transitional Cell) CancerStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 150 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Zhiping Wang
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Zhiping Wang, Lanzhou University Second Hospital
- Investigators
- Zhiping Wang, Principal investigator, Lanzhou University Second Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07589413
- Sponsor's protocol ID
- LZU2H-BCa-Rinse
- Status last verified
- May 2026
- First submitted
- 1 May 2026
- Last updated
- 15 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided: The possibility of sharing de-identified individual participant data will be evaluated after study completion. Any future data sharing will depend on the scope of informed consent, institutional policies, ethics approval requirements, and the establishment of appropriate data use agreements. Shared data, if available, will not contain personally identifiable information.
Study at a glance
From the registry record, last updated by the sponsor on 15 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Predictive Model for Recurrence and Progression Risk After TURBT for Bladder Cancer on Intraoperative Irrigation Fluid Absorption Volume and Perioperative cfDNA Levels
- ClinicalTrials.gov ID
- NCT07589413
- Acronym / sponsor ID
- LZU2H-BCa-Rinse
- Conditions
- Bladder (Urothelial, Transitional Cell) Cancer, Bladder Cancer Recurrence, Progression of Bladder Cancer, Transurethral Resection of Bladder Tumor, Urothelial Carcinoma of the Bladder
- Keywords
- bladder cancer, nucleic acid mass spectrometry, TURBT, urothelial carcinoma, cell-free DNA, irrigation fluid absorption, circulating tumor DNA, mutation profiling
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 150 participants (estimated)
- Lead sponsor
- Zhiping WangUniversity, hospital or other
- Study start
- 1 Apr 2026 (actual)
- Primary completion
- 1 Apr 2027 (estimated)
- Study completion
- 1 Apr 2027 (estimated)
- First posted
- 15 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This prospective observational cohort study aims to evaluate the association between intraoperative irrigation fluid absorption and perioperative cell-free DNA (cfDNA) dynamics in patients undergoing transurethral resection of bladder tumor (TURBT). Eligible patients with suspected or confirmed bladder cancer scheduled for TURBT will be enrolled. Intraoperative irrigation fluid absorption volume will be recorded, and peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis.
The study will assess whether irrigation fluid absorption volume is associated with changes in cfDNA concentration, tumor-related mutation detection, and clinicopathological features, including tumor stage, grade, size, number, invasion depth, concomitant carcinoma in situ, operative time, resection depth, and intraoperative blood loss. Patients will also be followed for postoperative recurrence, progression, metastasis, and other adverse oncological outcomes.
This study may provide preliminary evidence for understanding perioperative tumor-related molecular changes during TURBT and may help improve risk stratification, perioperative management, and postoperative follow-up strategies for patients with bladder cancer.
Detailed description
Bladder cancer is one of the most common malignancies of the urinary system. Non-muscle-invasive bladder cancer accounts for the majority of newly diagnosed cases. Transurethral resection of bladder tumor (TURBT) is the standard procedure for the diagnosis, staging, and initial treatment of bladder cancer, particularly non-muscle-invasive bladder cancer. However, postoperative recurrence and progression remain common in some patients, especially those with high-risk pathological features.
During TURBT, mechanical resection, electrosurgical thermal injury, and continuous bladder irrigation may lead to tumor cell shedding and the release of tumor-derived molecular components into the irrigation fluid. Disruption of the mucosal and vascular barriers, opening of venous sinuses, increased intravesical pressure, and absorption of irrigation fluid may theoretically facilitate the entry of tumor-related components into the circulation. Although previous studies have mainly focused on intravesical tumor cell implantation and local recurrence, the relationship between intraoperative irrigation fluid absorption, perioperative cfDNA dynamics, and postoperative oncological outcomes remains insufficiently understood.
In this prospective observational cohort study, patients undergoing TURBT for suspected or confirmed bladder cancer will be enrolled. Intraoperative irrigation fluid absorption volume will be measured and recorded. Peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis using a multiplex mutation detection system based on nucleic acid mass spectrometry. Tumor tissue mutation status will also be evaluated when available.
The primary objective is to determine whether the volume of intraoperative irrigation fluid absorption is associated with perioperative changes in plasma cfDNA levels and tumor-related mutation detection. Secondary objectives include evaluating the association of cfDNA dynamics and irrigation fluid absorption with clinicopathological characteristics, including tumor stage, grade, size, number, invasion depth, concomitant carcinoma in situ, operative time, resection depth, and blood loss. Postoperative recurrence, progression, metastasis, and other adverse oncological outcomes will be assessed during follow-up.
The study is observational and will not alter standard clinical treatment decisions. The findings may help clarify perioperative molecular changes associated with TURBT and provide preliminary evidence for improving risk stratification and individualized postoperative surveillance in patients with bladder cancer.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Patients Undergoing TURBT for Bladder Cancer | – | Other: Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA ProfilingAdult patients with suspected or confirmed bladder urothelial carcinoma who are scheduled to undergo TURBT will be enrolled. Intraoperative irrigation fluid absorption volume, perioperative plasma cfDNA levels, mutation status, clinicopathological features, and postoperative oncological outcomes will be collected and analyzed. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- This study will include adults aged 18 years or older with suspected or confirmed bladder urothelial carcinoma who are scheduled to undergo TURBT at the Second Hospital of Lanzhou University. Eligible participants must be able to provide sufficient peripheral blood samples for cfDNA extraction and mutation analysis. Postoperative pathological diagnosis will be used to confirm eligibility for the final analysis when applicable. Patients will receive standard clinical management, and participation in this observational study will not affect treatment decisions.
Key inclusion criteria (6 listed)
- Age 18 years or older.
- Suspected or histologically confirmed urothelial carcinoma of the bladder.
- Scheduled to undergo TURBT.
- Availability of sufficient peripheral blood samples for cfDNA extraction and mutation analysis.
- Availability of complete clinicopathological and perioperative data.
Key exclusion criteria (6 listed)
- Non-urothelial bladder malignancy confirmed by pathology.
- History of other malignant tumors within the past 5 years, except adequately treated non-melanoma skin cancer or carcinoma in situ of the cervix.
- Previous radical cystectomy or systemic antitumor therapy before enrollment.
- Inadequate blood sample quality or insufficient DNA yield for mutation analysis.
- Pregnancy or breastfeeding.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Measurement of Intraoperative Irrigation Fluid Absorption and Perioperative cfDNA ProfilingThis is an observational exposure assessment. Intraoperative irrigation fluid absorption volume will be recorded during TURBT using a dedicated measurement system. Peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis. Tumor tissue mutation status will be assessed when available. No active therapeutic intervention, treatment modification, or change in clinical decision-making will be performed as part of this study. | Other | Patients Undergoing TURBT for Bladder Cancer |
Primary outcome
Change in Plasma cfDNA Level From Before TURBT to Within 24 Hours After TURBT
Time frame: From preoperative blood collection to within 24 hours after TURBT
The primary outcome is the perioperative change in plasma cfDNA level, calculated by comparing cfDNA concentration before TURBT and within 24 hours after TURBT. The association between intraoperative irrigation fluid absorption volume and cfDNA change will be evaluated.
1 secondary outcome
Detection Rate of Tumor-Related Mutations in Perioperative cfDNA
Time frame: From preoperative blood collection to within 24 hours after TURBT
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 May 2026.
- Individual participant dataSharing planned: Undecided. The possibility of sharing de-identified individual participant data will be evaluated after study completion. Any future data sharing will depend on the scope of informed consent, institutional policies, ethics approval requirements, and the establishment of appropriate data use agreements. Shared data, if available, will not contain personally identifiable information.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Zhiping Wang principal investigator
Lanzhou University Second Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Bladder (Urothelial, Transitional Cell) Cancer and Bladder Cancer Recurrence, run by Zhiping Wang at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 15 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Plasma cfDNA Level From Before TURBT to Within 24 Hours After TURBT (time frame: From preoperative blood collection to within 24 hours after TURBT). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 May 2026.