On February 19, 2024 Astrazeneca reported positive high-level results from the LAURA Phase III trial showed that Tagrisso (osimertinib) demonstrated a statistically significant and highly clinically meaningful improvement in progression-free survival (PFS) for patients with unresectable, Stage III epidermal growth factor receptor-mutated (EGFRm) non-small cell lung cancer (NSCLC) after chemoradiotherapy (CRT) compared to placebo after CRT (Press release, AstraZeneca, FEB 19, 2024, View Source [SID1234640214]).
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Overall survival (OS) data showed a favourable trend for Tagrisso, although data were not mature at the time of this analysis. The trial will continue to assess OS as a secondary endpoint.
Each year an estimated 2.4 million people are diagnosed with lung cancer globally with 80-85% of patients diagnosed with NSCLC, the most common form of lung cancer.1-3 Approximately 10-15% of NSCLC patients in the US and Europe, and 30-40% of patients in Asia, have EGFR mutations.4-7 More than one in six patients with NSCLC are diagnosed with unresectable Stage III disease (15%).8
Suresh Ramalingam, MD, Executive Director of Winship Cancer Institute of Emory University, Atlanta, US, and principal investigator in the trial, said: "These results represent a major advance for patients with Stage III EGFR-mutated lung cancer who have a high propensity for early progression and spread to the brain, and where no targeted therapy is available. LAURA shows osimertinib can provide impactful clinical benefit and could become the first targeted treatment option for patients with Stage III disease."
Susan Galbraith, Executive Vice President, Oncology R&D, AstraZeneca, said: "These highly impactful results for the LAURA trial in this potentially curative early lung cancer setting further entrench Tagrisso as the backbone therapy for EGFR-mutated lung cancer. These data together with the ADAURA data, reinforce the imperative to diagnose and treat patients with lung cancer as early as possible."
The safety and tolerability of Tagrisso in the LAURA trial was consistent with its established profile and no new safety concerns were reported with Tagrisso maintenance treatment following CRT.
The data will be presented at a forthcoming medical meeting and shared with global regulatory authorities.
In addition, Tagrisso plus chemotherapy was recently approved in the US based on the FLAURA2 Phase III trial.
As part of AstraZeneca’s ongoing commitment to treating patients as early as possible in lung cancer, Tagrisso is also being investigated in the neoadjuvant setting in the NeoADAURA Phase III trial with results expected later this year, and in the early-stage adjuvant resectable setting in the ADAURA2 Phase III trial.
Notes
Lung cancer
Lung cancer is the leading cause of cancer death among both men and women, accounting for about one-fifth of all cancer deaths.1 Lung cancer is broadly split into NSCLC and small cell lung cancer.2 The majority of all NSCLC patients are diagnosed with advanced disease.6
Patients with EGFRm NSCLC are particularly sensitive to treatment with an EGFR-tyrosine kinase inhibitor (EGFR-TKI) which blocks the cell-signalling pathways that drive the growth of tumour cells.10
LAURA
LAURA is a randomised, double-blind, placebo-controlled, multi-centre, global Phase III trial in patients with unresectable, Stage III EGFRm NSCLC whose disease has not progressed following definitive platinum‑based CRT. Patients were treated with Tagrisso 80mg once daily oral tablets until disease progression, unacceptable toxicity or other discontinuation criteria were met. Upon progression, patients in the placebo arm were permitted to be treated with Tagrisso.
The trial enrolled 216 patients in more than 145 centres across more than 15 countries, including in the US, Europe, South America and Asia. This is the analysis of the primary endpoint of PFS. The trial is ongoing and will continue to assess the secondary endpoint of OS.
Tagrisso
Tagrisso (osimertinib) is a third-generation, irreversible EGFR-TKI with proven clinical activity in NSCLC, including against central nervous system metastases. Tagrisso (40mg and 80mg once-daily oral tablets) has been used to treat more than 800,000 patients across its indications worldwide and AstraZeneca continues to explore Tagrisso as a treatment for patients across multiple stages of EGFRm NSCLC.
Tagrisso is approved as monotherapy in more than 100 countries including in the US, EU, China and Japan. These include for 1st-line treatment of patients with locally advanced or metastatic EGFRm NSCLC, locally advanced or metastatic EGFR T790M mutation-positive NSCLC, and adjuvant treatment of early-stage (IB, II and IIIA) EGFRm NSCLC, where Tagrisso recently demonstrated a statistically significant and clinically meaningful OS benefit.
There is an extensive body of evidence supporting the use of Tagrisso in EGFRm NSCLC. Tagrisso is the only targeted therapy to improve patient outcomes in both early-stage disease in the ADAURA Phase III trial and late-stage disease in the FLAURA Phase III trial and FLAURA2 Phase III trial.
The Company is also researching ways to address tumour mechanisms of resistance through the SAVANNAH and ORCHARD Phase II trials, and the SAFFRON Phase III trial, which test Tagrisso plus savolitinib, an oral, potent and highly selective MET TKI, as well as other potential new medicines.