Targeted therapy improves disease-free survival in patients with early-stage NSCLC

According to updated findings led by researchers at Yale Cancer Center, treatment with the targeted therapy osimertinib following surgery continues to significantly improve disease-free survival (DFS) in patients with early-stage, non-small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) gene mutations.

The benefit of osimertinib treatment demonstrated earlier this year in the ADAURA trial was so substantial that the independent data monitoring committee recommended early unblinding of the multinational randomized controlled phase III trial. The latest findings are to be presented September 19 at 12:30 p.m., during the virtual science program at the annual meeting of the European Society for Medical Oncology (ESMO). The results are also to be published online in the New England Journal of Medicine at the same time.

These updated results from the ADAURA trial once again demonstrated a statistically significant and clinically meaningful improvement in disease-free survival in the adjuvant treatment of patients with early-stage EGFR mutations for NSCLC. It's so critical to provide patients with this type of lung cancer a new treatment option."

Roy S. Herbst, MD, PhD, chief of Medical Oncology at YCC and Smilow Cancer Hospital and senior author of the study

ADAURA is a phase 3, randomized trial that looked at adjuvant therapy with osimertinib, a third-generation EGFR-TKI, versus placebo, in treating patients with Stage IB through IIIA EGFR-mutated non-small cell lung cancer. The trial results showed that osimertinib offered a two-year, 89% DFS for patients with resected lung cancer (stage IB/II/IIIA) compared to a DFS rate of 52% in patients randomized to treatment with placebo, with manageable side effects. Disease-free survival measures the time from randomization to first sign of cancer recurrence or death. In this trial, patients treated with osimertinib had a 79% reduction in the risk of their cancer returning or death. The study will continue to follow patients for overall survival outcomes.

"In the past, we haven't had much success fighting recurrence in the liver, lung and brain of NSCLC in patients with EGFR mutations," said Herbst. "These study results will hopefully be practice-changing and have a huge impact on patient care."

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