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260 active trials for Bladder Cancer

Efficacy of Durvalumab in Non-muscle-invasive Bladder Cancer

Research Hypothesis Approximately 75% of patients with bladder cancer (BC) present with a disease confined to the mucosa (stage Ta, CIS) or submucosa (stage T1) (non-muscle invasive BC [NMIBC]). For high grade NMIBC, i.e. TaG3, T1G3 and CIS, intravesical bacillus Calmette-Guérin (BCG) immunotherapy is the treatment of choice, given that it prevents recurrence and reduces the odds of progression to MIBC. However, since initial BCG therapy fails in approximately 40% of patients over a 2-year period, new treatment options for these patients are of utmost importance. In that field of research durvalumab, a human monoclonal antibody that binds programmed cell death ligand-1 (PD-L1), demonstrated meaningful clinical activity as well as manageable safety profile in PD-L1-positive patients with BC, many of whom were heavily pretreated. Certain studies using systemic administration of anti-PD1 agents for BCG refractory NMIBC are ongoing. Nevertheless, intravesical administration may be advantageous, since selective bladder tumor uptake of monoclonal antibodies following intravesical administration, while this method results in negligible absorption in the circulation and, therefore, minimal risk of systemic toxicity. This notion is supported by the findings of a recent study of intravesical administration of recombinant adenovirus-mediated interferon-?2b gene therapy (rAd-IFN?), No rAd-IFN? DNA was detected in the blood. Furthermore, no systemic toxicity was reported in a phase II study using the same agent. The investigators, therefore, propose a phase II study of intravesical administration of durvalumab in patients with BCG refractory NMIBC. Since no safety or efficacy data specifically on intravesical administration of durvalumab exist, a run-in part will precede the main phase II, in order to confirm safety of the procedure and to reject a futility hypothesis, as described in the following sections of the protocol. Correlative studies of potential biomarkers in tumor tissue before and after durvalumab instillation are also proposed.

Start: November 2018
Durvalumab (MEDI4736) and TREmelimumab in NEOadjuvant Bladder Cancer Patients (DUTRENEO)

In the treatment of localized/locally advanced urothelial cancer, there are several questions that have not yet been resolved, such as the limited benefit of cisplatin-based chemotherapy in the adjuvant or neoadjuvant context, the difficulty in establishing which groups actually benefit from either perioperative treatment and what are the molecular markers that could help us predict the response to this treatment to allow a better selection of patients. On the other hand, not all patients are candidates for cisplatin-based chemotherapy and carboplatin is not comparable in activity, so there is an urgent need to find other drugs that may offer a therapeutic opportunity to these patients. In the context of metastatic disease, immunotherapy has been able to modify the natural history of this disease, administered as monotherapy, but the combination with double immune checkpoint inhibitors is also being evaluated with promising results. Even this therapeutic strategy is being advanced to the context of adjuvant and neoadjuvant treatment of urothelial tumors. In this sense, on the one hand, the present study, as a research in the neoadjuvant setting, constitutes the opportunity to define molecular phenotypes in bladder cancer since the design of this study will allow both, to evaluate the efficacy of the drug when the tumor is operable and to carry out an extensive analysis of biomarkers in the tumor tissue of these patients with an in-vivo evaluation of immune-based therapy activity. On the other hand, it allows to evaluate a strategy of double-immune checkpoint inhibitors that has already demonstrated activity in metastatic disease and, taking into account, the modest benefit of standard chemotherapy in the perioperative context: platinum-based neoadjuvant chemotherapy in patients with muscle-invasive bladder cancer (MIBC) Modest increase in overall survival, but only a subset of eligible patients are eligible to receive it. In addition, radical cystectomy alone, in MIBC patients, presents a 5-year relapse rate of 10-50%.

Start: October 2018
Quadratus Lumborum Block vs Transversus Abdominis Plane Block in Bladder Cancer Surgeries

Transversus abdominis plane (TAP) block can be used to provide effective analgesia during the postoperative period following a range of surgeries. TAP block administers local anesthetics between the T6 to L1 spinal nerve roots to stop the nerve signal and to alleviate pain for abdominal procedures 4, 5. The viscera are innervated by the vagal nerve (parasympathetic innervation) and by the splanchnic nerves (sympathetic innervation). The splanchnic nerves carry both visceral efferent and afferent nerve fibers. The sensory (or afferent) part of the splanchnic nerves reach the spinal column at certain spinal segments, It is possible to block central visceral pain conduction with thoracic paravertebral blockade or maybe even with the novel quadratus lumborum (QL) block. The effect of the QL block is believed to result from a spread of LA from its lumbar deposition cranially into the thoracic paravertebral space (TPVS), since Carney et al found traces of contrast agent in the TPVS following application of this block. Hence, the QL block would seem to be able to alleviate both somatic and visceral pain.10 The aim of this study is to compare between quadratus lumborum block, transversus abdominis plane block regarding perioperative analgesia after bladder cancer surgeries by measuring intraoperative hemodynamics, postoperative pain scores and morphine consumption in the first 24 h postoperative.

Start: June 2020
Efficacy and Safety of Clinical Telesurgery Using Chinese Independently Developed Surgical Robot System

One-arm clinical trial was adopted in this study. The surgeons performed remote urological surgery for patients through domestically produced "MicroHand" surgical robot system (Shandong Weigao Co., Ltd). The "MicroHand" surgical robot system consists of two physically separated subsystems named the "surgeon console" and "patient side cart". The surgeon console includes a stereo image viewer, two master manipulators, a control panel and several foot pedals. The patient side cart includes a passive arm that can slide in the up-down direction and be adjusted forward and backward, a swivel head that can rotate around the vertical axis, and three slave arms (one for the endoscopic camera and the other two for surgical instruments). The surgeon console (based in Qingdao) takes the surgeon's input and translates it into a control signal. After network transmission, the patient side cart (based in Anshun) translates the control signal into actual instrument manipulation. The 3D images captured by the endoscopic camera were simultaneously sent back to the screen of the surgeon console as visual feedback. Data between the surgeon console and the patient side cart were transmitted through a 5G network. The safety and effectiveness of the robotic system in remote clinical diagnosis and treatment were verified by the main judgment criterion and secondary judgment criterion. Six patients are planned to enroll in the clinical trial. Main judgment criterion: The robot-assisted telesurgery did not transfer to other types of surgery, such as open surgery or normal robot-assisted surgery. Secondary judgment criterion: operative time, blood loss, postoperative pain, preoperative adjusting time and hospitalization time. Patient enrollment: This trial aims to explore the safety and effectiveness of the domestically produced robotic system in remote clinical diagnosis and treatment through 5G network. Six patients are planned to enroll in the clinical trial, including 2 patients with adrenal tumor, 2 patients with bladder cancer and 2 patients with renal cell carcinoma.

Start: August 2020