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Clinical Trial Summary

In the RESPONDER study, the role of the immune evasive mechanisms combined with genomic characterization will be explored in urothelial cancer patients treated with second-line treatment with pembrolizumab. Combined profiling of immune and molecular status is novel and may contribute to improved patient stratification and provide rationale for future treatment strategies containing pembrolizumab.


Clinical Trial Description

Antibodies that target the crosstalk between immune and cancer cells by inhibiting programmed death 1 (PD-1, Pembrolizumab and Durvalumab) or programmed death-ligand 1 (PD-L1, Atezolizumab) have shown promising results as second-line treatments in phase II studies with response rates of about 30%. Although urothelial cancer is prone to immune checkpoint blockade, better understanding of the underlying mechanisms is necessary to improve patient selection. The efficacy of immune checkpoint inhibitors in urothelial cancer may be affected by both tumor specific and environmental factors. In order to improve the efficacy of immunotherapy in urothelial cancer, drivers of local immune suppression need to be identified. In this prospective translational multicenter study, clinical data, peripheral blood and sequential tumor biopsies are collected from urothelial cancer patients treated with second-line treatment with pembrolizumab to identify the role of immune evasive mechanisms combined with genomic characterization. A pre-treatment tumor biopsy and blood sample will be obtained and subsequently whole genome sequencing and whole genome RNA sequencing is performed. Both tumor tissue as well as peripheral blood will be investigated for immune and molecular profiling. A biopsy will also be taken after start of treatment (at 6 weeks) and at progression (optional) For future research projects, longitudinal blood samples will be collected for isolation of immune cells, cytokine/chemo-attractants and circulating tumor DNA (ctDNA). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03263039
Study type Interventional
Source Erasmus Medical Center
Contact
Status Active, not recruiting
Phase Phase 2
Start date August 21, 2017
Completion date August 19, 2023

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