FTSE 100 rises as AstraZeneca boosts pharma sector

London's FTSE 100 index rose 0.34% on Tuesday, driven by pharmaceutical stocks after AstraZeneca agreed to invest $2 billion in Summit Therapeutics for cancer research collaboration. The pharma sector advanced 1.5%, with AstraZeneca gaining 1.7% to a two-month high and peer GSK climbing 1.7%. Industrial metals rebounded 1.3% on copper price recovery, while oil price rises kept global bond yields elevated. British American Tobacco slipped 1.7% on a growth warning, while Vesuvius surged 21.7% on a takeover bid. Investors await UK second-quarter GDP data due later this week.