Among stocks, Roche Holding AG ROG.S slid 3.9% after its Alzheimer's drug candidate could not be shown to markedly slow dementia progression in two drug trials. By Shreyashi Sanyal Nov 14 (Reuters) - European shares edged higher on Monday, as media stocks were boosted by Britain's Informa, although caution prevailed after a top Federal Reserve policymaker warned that the U.S. central bank would not "soften" its fight against inflation. The pan-European STOXX 600 index .STOXX was up 0.2% by 0908 GMT, hovering near 11-week highs after recording its biggest weekly gain in nearly eight months on Friday.