AstraZeneca/MedImmune Miss on Phase 3 MYSTIC Trial

AstraZeneca and MedImmune say results from their Phase 3 MYSTIC trial involving Imfinzi (durvalumab) did not meet primary endpoints of improving overall survival compared to standard-of-care (SoC) platinum-based chemotherapy in previously-untreated patients with Stage IV (metastatic) non-small cell lung cancer (NSCLC). The randomized, open-label, multi-center, global trial evaluated Imfinzi monotherapy and combination Imfinzi and tremelimumab, an anti-CTLA4 antibody, versus SoC in the target patient population.

 

The companies says that while overall survival did not meet statistical significance, a more favorable hazard ratio was observed with Imfinzi monotherapy, with data supporting further analysis in exploratory subgroups.

 

Imfinzi is approved for unresectable, Stage III NSCLC in more than 40 countries, including the U.S.

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