Vesical Imaging-Reporting and Data System (VI-RADS) Followed by Photodynamic Trans-urethral Resection of Bladder Tumours (PDD-TURBT) to Avoid Secondary Resections (Re-TURBT) in Non-Muscle Invasive Bladder Cancers (NMIBCs)

Background: In European Association of Urology (EAU) Guidelines, the vast majority of non-muscle-invasive bladder cancers (NMIBCs) undergo a primary transurethral resection of the bladder tumor (TURBT) followed by a repeat TURBT (Re-TURBT). The Re-TURBT is recommended due to the possibility of residual bladder cancer but is unnecessary in many cases by constituting overtreatment. Currently, no diagnostic strategy or predictive tools have been implemented to further stratify who does or does not benefit from Re-TURBT. Recently, an MRI-based Vesical Imaging Reporting and Data System (VI-RADS) score has been developed to stage as to the preoperative probability of muscle invasion, which could potentially exclude those who do not require a Re-TURBT when a primary high-quality resection is delivered. As such, performing TURBT with standard white light (WL) cystoscopy is known to miss many bladder tumours, which may be poorly visible, and a technique known as with photodynamic diagnosis (PDD) results in lower residual tumor and lower early intravesical recurrence rates. PDD is performed using violet light to improve the detection of these lesions not easily visible with WL cystoscopy. Methods/Aims: The investigators propose an Italian, single-center, phase IV, open-label, non-inferiority, randomized controlled trial, in which participants (n=112) who had already received a mpMRI/VI-RADS score, are randomized to receive PDD-TURBT, no Re-TURBT versus standard of care represented by conventional WL-TURBT followed by WL-Re-TURBT. The primary outcome is proportions of early recurrence in the urinary bladder. Secondary outcomes will include proportions of late BCa recurrence, late disease-free interval, time to progression to MIBC, patient's quality of life assessment, and cost-analysis. Perspective: The CUT-less trial aims to respond to this unmet need through a non-inferiority randomized clinical study potentially shaping the perspective for a paradigm shift towards a more