** Shares of drugmaker Seagen SGEN.O rise ~3.7% to $214.10
premarket
** SGEN and Astellas Pharma's 4503.T Padcev in combination
with Merck's MRK.N Keytruda met main goals in a late-stage
confirmatory trial for a type of bladder cancer
** Cos say that the trial met overall survival (OS) and
progression-free survival (PFS) measures, compared with
chemotherapy
** OS determines the duration of patient survival from the
time of treatment initiation, while PFS looks at the time from
treatment until the cancer disease begins to worsen - NIH
** The combination therapy had received accelerated approval
from the U.S. health regulator in April 2023
** Up to last close, shares up 60.6% YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))