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Clinical Trial Summary

This trial aims at investigating the diagnostic ability of a combined diagnostic panel including systematic endoscopic evaluation (SEE), blood-based ctDNA assay, and urine-based cfDNA assay to predict the presence of residual tumor remaining in the bladder at cystectomy. Patients who are planned for cystectomy due to bladder cancer will be considered for enrollment based on inclusion and exclusion criteria.


Clinical Trial Description

The principle outcome of this study is to determine the negative predictive value (NPV) of finding no muscle invasive (pT2) tumor in seeT0 patients with a negative result on the ctDNA assay prior to radical cystectomy. Eligible candidates for radical cystectomy and INSITE trial: - Patients with high grade T1 urothelial carcinoma who elect for "early" /upfront cystectomy - Patients with non-muscle invasive high grade Ta urothelial carcinoma or carcinoma in situ who have relapsed or are refractory / unresponsive to intravesical therapy and have elected to undergo cystectomy - cT2-T3 muscle invasive urothelial carcinoma (irrespective of receipt of neo-adjuvant chemotherapy) Prior to cystectomy, tissue (transurethral resection of bladder tumor), urine and blood samples will be obtained at baseline for urine biopsy, ctDNA testing and future correlative studies. After anesthetic induction for radical cystectomy, the patient will undergo rigid cystoscopy with targeted transurethral resection (TUR) of visible tumor or tumor bed, and two additional random bladder biopsies of normal-appearing bladder mucosa. Urine and blood samples will be obtained day of procedure for utilization for urine biopsy, ctDNA, and future correlative studies. Following cystectomy, a diagnostic testing panel of pre-cystectomy cystoscopic and biopsy findings, ctDNA, and urine biopsy will be compared to final pathologic specimen. Blood samples will be obtained 4-6 weeks (±2 weeks) post-procedure and 6 months (±1 month) post-procedure for analysis and ctDNA for post-procedure surveillance and other additional correlative studies. Additional blood sample collections at 12 months and 24 months post-procedure are optional. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06396533
Study type Observational
Source Fox Chase Cancer Center
Contact Alexander Kutikov, M.D.
Phone 215-728-3096
Email alexander.kutikov@fccc.edu
Status Not yet recruiting
Phase
Start date May 2024
Completion date February 23, 2029

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