TReatment approaches and bIomarkers preValence in bladdEr cancer in RuSsian Federation - RIVERS

A multicentre observational study on treatment approaches and HER2 positive status prevalence in different stages of bladder cancer and PD-L1-positive status in metastatic bladder cancer in Russian Federation

This is an observational study entailing primary and secondary data collection. As an observational, this study does not imply any intervention into a routine clinical practice, including choice of treatment modality or additional diagnostic methods. Epidemiologic methods and descriptive analysis will be used for data collection and evaluation of all endpoints and measurements of interest. It will be a multicentre study. Planned number of study sites is about 30 oncological centres performing specialised treatment and follow-up of patients with urothelial bladder cancer in different regions of Russia. Planned study population consists of approximately 600 adult patients with urothelial bladder cancer. Patients who were diagnosed with urothelial bladder cancer and satisfy the additional eligibility criteria as assessed by the investigator will be invited to participate during routine clinical visit. Only patients who will give their written informed consent will be included. Consecutive patients included in the study will form three study cohorts of equal size (around 200 participants each) according to the stages of urothelial bladder cancer at the time of study inclusion: high-risk NMIBC, MIBC, and mBC. The investigator will enter medical data of the enrolled patients into the electronic case report form (eCRF) from the source medical documentation. No follow-up is planned, the study will consist of only one visit carried out according to routine clinical practice, where patient’s demographic and clinical characteristics as well as medical history and used treatment approaches will be recorded, and formalin-fixed paraffin-embedded (FFPE) tumour tissue samples collected as part of routine clinical practice will be shipped to the central laboratory. The overall expected duration of the study enrollment is about 18 months or until 600 patients will be included in the study, and all required data (including results of IHC testing in central laboratory) will be collected, whichever occurs first.