Janssen NDA for Urothelial Cancer Drug
Janssen Pharmaceutical has submitted an NDA seeking approval of erdafitinib for treating patients with locally advanced or metastatic urothelial cancer and certain fibroblast growth factor receptor (FGFR) genetic alterations whose tumors have progressed after prior chemotherapy. Erdafitinib is an investigational oral pan-FGFR inhibitor that received breakthrough therapy designation from the agency 3/18.
Janssen says its submission is based on data from the BLC2001 (NCT02365597) Phase 2 clinical trial with a primary endpoint of the percentage of participants with an objective response. There was a 40% confirmed overall response rate (3% complete response, 37% partial response), a median progression-free survival of 5.5 months and median overall survival of 13.8 months, according to results presented at a medical conference earlier this year. Janssen says that in patients who experienced Grade 3 adverse events (AEs), the most common were stomatitis (9%), hand-foot syndrome (5%) and diarrhea (4%). Seven patients discontinued due to treatment-related AEs.
FGFRs are a family of receptor tyrosine kinases, which can be activated by genetic alterations in a variety of tumor types, and these alterations may lead to increased tumor cell growth and survival, the company says. A companion diagnostic to identify patients with FGFR alterations is also under development, Janssen says.