AstraZeneca's Tagrisso Receives Positive Opinion for Marketing Authorization in the European Union

AstraZeneca's Tagrisso, a third-generation, irreversible EGFR-TKI, has received a positive opinion for marketing authorization in the European Union for the adjuvant treatment of adult patients with early-stage epidermal growth factor receptor-mutated (EGFRm) non-small cell lung cancer (NSCLC) after complete tumour resection with curative intent. This decision is based on the unprecedented results from the ADAURA Phase III trial, which demonstrated a statistically significant and clinically meaningful improvement in disease-free survival (DFS) in patients with Stage II and IIIA EGFRm NSCLC.

Key Takeaways:

  • Tagrisso has shown an 80% reduction in the risk of disease recurrence or death in the ADAURA Phase III trial.
  • The trial enrolled 682 patients with Stage IB, II, and IIIA EGFRm NSCLC, who were treated with Tagrisso 80mg once-daily oral tablets or placebo for three years or until disease recurrence.
  • The primary endpoint of DFS in Stage II and IIIA patients showed a statistically significant improvement with Tagrisso.
  • The trial also showed a clinically meaningful improvement in DFS in Stage IB, II, and IIIA patients.
  • Historically, nearly half of patients diagnosed in Stage IB, and over three-quarters of patients diagnosed in Stage IIIA, have experienced recurrence within five years.
  • Dave Fredrickson, Executive Vice President, Oncology Business Unit, emphasized the importance of this positive recommendation, stating: "With no targeted treatment options currently available for early-stage lung cancer patients after surgery in the EU, recurrence rates remain unacceptably high."
  • Tagrisso is approved to treat early-stage lung cancer in more than fifteen countries, including the US and China, and additional global regulatory reviews are ongoing.

Statistical Breakdown:

  • The ADAURA trial enrolled 682 patients with Stage IB, II, and IIIA EGFRm NSCLC.
  • The primary endpoint of DFS in Stage II and IIIA patients showed a statistically significant improvement with Tagrisso (HR 0.20, 95% CI: 0.13-0.30).
  • The trial also showed a clinically meaningful improvement in DFS in Stage IB, II, and IIIA patients (HR 0.30, 95% CI: 0.20-0.45).
  • Approximately 25-30% of NSCLC patients present with resectable disease at diagnosis, and approximately 10-15% of NSCLC patients in the US and Europe, and 30-40% of patients in Asia have EGFRm NSCLC.

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