BRIEF-GSK sees headline results of SUMMIT trial with Breo around Sept/Oct
July 29, 2015 at 10:07 AM EDT
July 29 (Reuters) - GlaxoSmithKline Plc CEO Andrew Witty told analysts: * CEO says headline results of SUMMIT trial with Breo likely around Sept/Oct * CEO says big-to-big pharma deals have high "pain" threshold and risky; GSK