Abstract

Abstract Although Erdafitinib has recently emerged as a treatment for metastatic urothelial carcinoma, it has been shown to be effective against FGFR mutations, but the target patient population is small, and a new treatment for urothelial carcinoma without FGFR mutations is needed. We found that Erdafitinib degrades MCL1 in urothelial carcinoma cells. Furthermore, we found that in combination with Navitoclax, a BCLXL/BCL2 inhibitor, it induced potent apoptosis in urothelial carcinoma cell lines without FGFR mutation. This combination therapy may represent a new treatment for urothelial carcinoma without FGFR mutations. Citation Format: Akira ohtsu, Seiji Arai, Tatsuhiro Sawada, Kazuhiro Suzuki. Erdafitinib in combination with BCLXL/BCL2 inhibitor induce apoptosis in urothelial carcinoma cells without FGFR mutation [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 1928.

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