Pharmaceuticals giant GlaxoSmithKline announced on Friday afternoon that it has completed, along with partner Theravance, the phase III programme of a 52-week safety study for its UMEC/VI medicine for the maintenance treatment of chronic obstructive pulmonary disease (COPD).The 6,000-patient study, along with other recently completed studies, "supports GSK's plans to commence global regulatory submissions for UMEC/VI from the end of 2012," the firm said. UMEC/VI is one of several late-stage assets in Glaxo's respiratory development portfolio which have not yet been approved anywhere in the world.Shares were trading 0.69% higher at 1,461p before the close.BC