The FDA has granted AstraZeneca PLC's first-in-class tezepelumab breakthrough designation in patients with severe asthma, potentially accelerating its development and review. To successfully do that, though, the drug will need to reproduce the impressive clinical data supporting the decision in Phase III studies.
The breakthrough designation is based on Phase IIb PATHWAY data which showed tezepelumab significantly reduced asthma exacerbations compared with placebo...