BURNABY, British Columbia, Sept. 10, 2018 (GLOBE NEWSWIRE) -- Xenon Pharmaceuticals Inc. (Nasdaq:XENE), a clinical stage, neurology-focused biopharmaceutical company, today announced it has signed an agreement with Valeant Pharmaceuticals Luxembourg S.a.r.l. and Valeant Pharmaceuticals Ireland Limited, indirect subsidiaries of Bausch Health Companies Inc., (together, Bausch Health) to buy out all milestone payments and royalties with respect to XEN1101, which is a Kv7 potassium channel opener being developed by Xenon for the treatment of epilepsy.