About this trial
The goal of this observational study is to evaluate whether body composition abnormalities (sarcopenia, myosteatosis, and obesity) and nutritional status influence the risk of recurrence and progression in adult patients with non-muscle-invasive bladder cancer (NMIBC). The main questions it aims to answer are:
Do sarcopenia, myosteatosis, obesity, or malnutrition increase the likelihood of NMIBC recurrence and progression?
Can clinical, laboratory, and CT-derived body composition parameters serve as predictive biomarkers that improve individualized risk stratification?
Participants will undergo routine clinical and radiologic assessments, including:
* completion of the SARC-F and NRS nutritional screening questionnaires * anthropometric measurements (BMI, waist circumference) * laboratory evaluation including serum albumin and testosterone * CT-based assessment of skeletal muscle index (SMI) and muscle density (SMD) * standard TURBT and structured follow-up with cystoscopy, cytology, imaging, and clinical evaluations to document recurrence and progression.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Adults aged 18 years or older
Histologically confirmed non-muscle-invasive bladder cancer (NMIBC) (Ta, T1, or CIS)
Scheduled for transurethral resection of bladder tumor (TURBT) as part of standard care
Able to undergo CT imaging required for assessment of skeletal muscle index (SMI) and skeletal muscle density (SMD)
Disqualifiers
Low-risk NMIBC, as defined by clinical guidelines
Muscle-invasive bladder cancer (≥ T2) at diagnosis
Expected survival less than 3 months
Contraindications to CT imaging (e.g., severe renal dysfunction, contrast allergy if contrast required)
Trial population
Adult patients diagnosed with non-muscle-invasive bladder cancer (NMIBC) undergoing transurethral resection of bladder tumor (TURBT) and guideline-based surveillance at a tertiary urology center. The study population includes individuals with and without body composition and nutritional abnormalities (sarcopenia, myosteatosis, obesity, or malnutrition) who meet eligibility criteria and consent to participate.
Trial design
Cohort
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Progression-Free Survival (PFS)
Time from TURBT to progression to muscle-invasive bladder cancer (≥ T2) or other defined progression endpoints (CIS emergence, variant histology progression).
Recurrence-Free Survival (RFS)
Time from transurethral resection of bladder tumor (TURBT) to the first documented recurrence of non-muscle-invasive bladder cancer, confirmed by cystoscopy, urine cytology, or pathology.
Secondary outcomes
Impact of Preoperative Skeletal Muscle Index (SMI) on Recurrence Free Survival (RFS)
Recurrence-free survival according to skeletal muscle index (SMI) measured on baseline computed tomography (CT) images at L3 level (cm²/m²).
Impact of Preoperative Skeletal Muscle Density (SMD) on Recurrence Free Survival (RFS)
Recurrence-free survival according to skeletal muscle density (SMD) measured in Hounsfield units (HU) on baseline computed tomography (CT) images at L3 level
Impact of Preoperative Body Mass Index (BMI) on Recurrence Free Survival (RFS)
Recurrence-free survival according to body mass index (BMI) measured at the baseline evaluation (kg/m²)
Impact of Preoperative Nutritional Risk Score (NRS 2002) on Recurrence Free Survival (RFS)
Recurrence-free survival according to Nutritional Risk Score (NRS 2002) assesed at the baseline evaluation (expressed in points using the standardized NRS-2002 questionnaire)
Locations
Sponsors and contacts
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This trial is not recruiting at the moment. You can still explore other options: