AstraZeneca's Tagrisso (osimertinib) has been approved in China for the adjuvant treatment of patients with early-stage (IB, II and IIIA) epidermal growth factor receptor-mutated (EGFRm) non-small cell lung cancer (NSCLC) after tumour resection with curative intent, with or without adjuvant chemotherapy as recommended by the patient's physician. Tagrisso is indicated for EGFRm patients whose tumours have exon 19 deletions or exon 21 (L858R) mutations.

The approval by China's National Medical Products Administration (NMPA) was based on positive results from the ADAURA Phase III trial. In the trial, Tagrisso demonstrated a statistically significant and clinically meaningful improvement in disease-free survival (DFS) in the primary analysis population of patients with Stage II and IIIA EGFRm NSCLC. The ADAURA trial also showed a statistically significant and clinically meaningful improvement in DFS in the overall trial population of patients with Stage IB-IIIA disease, a key secondary endpoint.