AstraZeneca and Amgen’s experimental drug tezepelumab reduced asthma attacks in patients with severe and uncontrolled forms of the respiratory condition in a large study, showing promise for wider use against different triggers.

AstraZeneca and Amgen said their experimental asthma drug tezepelumab failed to meet the main goal of reducing patients’ dependence on steroids, while keeping the respiratory condition in check in a late-stage trial.