** U.S.-listed shares of Australia-based Immutep Ltd
IMMP.O surge 36.76% to $2.17
** Stock set for its biggest one-day pct jump in over two
years, if gains hold
** Co says its lead candidate eftilagimod in combination
with Merck & Co. Inc's MRK.N Keytruda prolonged the lives of
patients with a type of lung cancer in a mid-stage study
** Co plans to release more data on the study later this
year
** Including session gain, Immutep's U.S.-listed stock up
~24% YTD
(Reporting by Mariam Sunny in Bengaluru)
((Mariam.ESunny@thomsonreuters.com;))