By
Shares of the drugmaker rose 1.5% after the company said its diabetes drug Farxiga met the main goal of the study for the treatment of patients with heart failure.
The pan-European STOXX 600 index was up 0.1% by 0712 GMT, with London's FTSE 100 outperforming.
Pandora A/S jumped 6.4% to the top of the STOXX 600 index on Tuesday after the Danish jewellery maker maintained its full-year guidance.
However, a fall in bank shares and auto parts makers capped gains.