AstraZeneca PLCTAGRISSO showed an unprecedented 47-48% reduction in death risk at eight years in the ADAURA Phase III trial, reinforcing its role as adjuvant standard of care.

AstraZeneca's TAGRISSO (osimertinib) demonstrated an unprecedented eight-year overall survival benefit in early-stage EGFR-mutated non-small cell lung cancer in the ADAURA Phase III trial, reducing the risk of death by 47% versus placebo in the primary population of Stages II-IIIA patients. In the overall trial population of Stages IB-IIIA, TAGRISSO reduced the risk of death by 48%, with an estimated 79% of TAGRISSO-treated patients alive at eight years versus 64% of those on placebo. The updated exploratory results, presented at the IASLC 2026 World Conference on Lung Cancer in Seoul and simultaneously published in the Journal of Thoracic Oncology, showed an estimated 74% of TAGRISSO-treated patients alive at eight years versus 58% on placebo in the primary population. Roy S. Herbst, principal investigator in the ADAURA Phase III trial, noted a 16 percentage point improvement in overall survival at eight years versus placebo, while Susan Galbraith, AstraZeneca's Executive Vice President of Oncology Haematology R&D, said the results reinforce TAGRISSO as the adjuvant standard of care and backbone therapy across stages of the disease. Separately, real-world evidence presented at the conference from a retrospective cohort study of US patients with early-stage EGFRm NSCLC showed that early discontinuation of TAGRISSO before completing the three-year treatment course more than doubled the risk of disease recurrence or death.
AstraZeneca PLCTAGRISSO showed an unprecedented 47-48% reduction in death risk at eight years in the ADAURA Phase III trial, reinforcing its role as adjuvant standard of care.