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AstraZeneca PLC announced that its investigational drug tozorakimab met primary endpoints in two Phase III clinical trials (OBERON and TITANIA) for chronic obstructive pulmonary disease (COPD), demonstrating statistically significant reductions in exacerbations. This represents a potential first-in-class IL-33-targeting biologic advancement for a leading cause of death globally.
Key Takeaways
1Tozorakimab met primary endpoint in both OBERON and TITANIA Phase III trials in patients with COPD.
2Tozorakimab is the first-ever IL-33-targeting biologic to demonstrate statistically significant and highly clinically meaningful reductions in COPD exacerbations in two replicate Phase III clinical trials.
3The trials showed tozorakimab reduced the annualised rate of moderate-to-severe COPD exacerbations compared with placebo in the primary population of former smokers and in the overall population.
4Tozorakimab was generally well tolerated with a favourable safety profile.
5Additional Phase III trials of tozorakimab in COPD, PROSPERO and MIRANDA, are ongoing, with results expected in H1 2026.
6Tozorakimab was granted Fast Track Designation by the US Food and Drug Administration for COPD in December 2024.