Bladder Cancer with FGFR Alterations: THOR-2 Cohort 1 Study at ESMO 2023

EP: 1.Biomarkers and Molecular/ Genomic Testing in Genitourinary Cancers

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EP: 2.Bladder Cancer with FGFR Alterations: THOR-2 Cohort 1 Study at ESMO 2023

EP: 3.Overview of BCG-Unresponsive Bladder Cancer Treatments Landscape

EP: 4.ESMO 2023 Insights: SunRISe-1 Study of TAR-200 in BCG-Unresponsive Bladder Cancer

EP: 5.Key Highlights from EV-302 Study at ESMO 2023

EP: 6.LITESPARK-003 Trial Insights: Updates from ESMO 2023

EP: 7.Future Opportunities in Genitourinary Cancers

This is a video synopsis/summary of a panel discussion involving Sia Daneshmand, MD.

Daneshmand discusses results from the THOR-2 study of erdafitinib for BCG-refractory non–muscle invasive bladder cancer with FGFR (fibroblast growth factor receptor) alterations. Patients were randomly assigned 2:1 to receive oral erdafitinib 6 mg daily or investigator’s choice of intravesical chemotherapy. The primary end point was recurrence-free survival (RFS), with secondary end points of 6-month and 12-month RFS.

With median 13-month follow-up, median RFS was not reached with erdafitinib versus 0.28 for chemotherapy, favoring erdafitinib. The 12-month RFS was 77% with erdafitinib versus 41% with chemotherapy. Erdafitinib significantly reduced recurrence in high-risk patients. However, most patients experienced treatment-related adverse events with the oral formulation.

Daneshmand notes that while erdafitinib showed efficacy, the oral toxicity profile is concerning for non–muscle invasive bladder cancer treatment. This paved the way for the TAR-200 study using an intravesical formulation of erdafitinib, which will be discussed later.

Video synopsis is AI-generated and reviewed by AJMCÒ editorial staff.