** Shares of uranium miner Paladin Energy fall as much as 3.1% to A$11.440

** Says acquisition of Fission Uranium still remains uncertain pending Investment Canada Act clearance

** Co says in light of national security review ordered earlier this month, there is no certainty of obtaining ICA clearance in a timely manner or at all

** Stock up 19.9% YTD, as of last close

(Reporting by Shivangi Lahiri in Bengaluru)

((shivangi.lahiri@thomsonreuters.com))