** U.S. FDA late on Monday granted accelerated marketing
approval to Seagen Inc's SGEN.O Padcev and Merck & Co's
MRK.N blockbuster drug Keytruda as combination first-line
treatment of bladder cancer
** Brokerage firm William Blair said the approval expands
the reach of Padcev in a $2.5 bln-$3 bln global market for
bladder cancer
** Padcev has already been approved as a monotherapy to
treat patients with bladder cancer by US FDA in 2021
** The combination therapy comes with a boxed warning for
serious skin reactions
** The approval is an inflection point for SGEN's revenue
growth trajectory, propelling Padcev to a multi-blockbuster
franchise - William Blair
** Brokerage BMO capital forecast U.S. sales of $3.5 bln for
Padcev in 2030
** As of last close, SGEN up ~57% YTD
(Reporting by Khushi Mandowara in Bengaluru)
((Khushi.Mandowara@thomsonreuters.com;))