MONTREAL, QUEBEC -- (MARKET WIRE) -- April 25, 2007 -- Thallion Pharmaceuticals Inc. (TSX: TLN) announced today that Allan Mandelzys has joined the company as Executive Vice-President, Licensing & Corporate Development. Dr. Mandelzys has extensive experience in the domains of drug licensing and partnering, and served most recently as Vice President, Business Development at Labopharm Inc.