Johnson & Johnson (J&J) unit Janssen Pharmaceutical's accelerated approval Friday from the FDA for Balversa (erdafitinib) to treat adults with locally advanced or metastatic urothelial carcinoma (mUC) with the susceptible genetic alteration fibroblast growth factor (FGFR)3 or FGFR2 brought new attention to FGFR drug candidates, hardly in short supply. Once-daily, oral Balversa is the first FGFR kinase inhibitor to gain U.S. regulators' blessing.