Study on Biomarkers of Radiation-Induced Bladder Injury

Radiation-Induced Bladder Injury

1. To identify biomarkers of radiation-induced bladder injury; 2. To develop a predictive model for radiation-induced bladder injury.

1. Enroll eligible patients and obtain written informed consent. 2. Collect clinical data. 3. Sample collection and biomarker assessment: Peripheral blood, urine, and stool samples will be collected from patients before the initiation of radiotherapy and after the start of radiotherapy, followed by multi-omics analyses. 4. Patient follow-up: Patients will be followed during radiotherapy, within 1 month after completion of treatment, and every 3 months thereafter; after 1 year, follow-up will be conducted every 6 months. Patients' symptoms, laboratory tests, and examination results will be recorded. Radiation-induced intestinal injury and its grading will be assessed according to the Radiation Therapy Oncology Group (RTOG) criteria. In addition, treatments and outcomes after the occurrence of radiation-induced bladder injury will be documented. The primary endpoint is radiation-induced bladder injury, and the secondary endpoint is overall survival. 5. Data integration: Clinical data, previous research findings, and biomarkers measured from patient samples will be integrated to identify biomarkers of radiation-induced bladder injury and to develop a predictive model using bioinformatics approaches.

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