AstraZeneca’s (AZ) Imfinzi (durvalumab) regimen has been approved by the US Food and Drug Administration (FDA) to treat a subset of adults with resectable non-small cell lung cancer (NSCLC).
The anti-PDL1 antibody has been authorised for use alongside neoadjuvant chemotherapy before surgery and then as an adjuvant monotherapy after surgery.
Patients eligible for the regimen will have resectable early-stage (stage 2A to 3B) NSCLC and no known epidermal growth factor receptor mutations or anaplastic lymphoma kinase rearrangements.
The FDA’s decision, which means that Imfinzi is now approved in the US to treat both resectable and unresectable NSCLC, was supported by positive data from the late-stage AEGEAN trial.
According to a planned interim analysis of event-free survival, patients treated with the regimen achieved a 32% reduction in the risk of recurrence, progression or death compared to neoadjuvant chemotherapy alone.
The combination also demonstrated a pathologic complete response rate of 17.2% versus 4.3% for patients receiving neoadjuvant chemotherapy only.
Approximately 235,000 people are expected to be diagnosed with lung cancer in the US this year, with NSCLC accounting for the majority of cases.
Up to 30% of all NSCLC patients are diagnosed early enough to have surgery with curative intent. However, most of those with resectable disease will develop recurrence.
Dave Fredrickson, executive vice president, oncology business unit, AZ, said: “[This] approval of Imfinzi in resectable early-stage lung cancer builds on its strong foundation of changing clinical practice in unresectable stage 3 disease.
“We remain committed to bringing novel approaches like AEGEAN to early lung cancer settings where cure is the goal of treatment.”
The approval comes just over a month after AZ received marketing authorisation from the Medicines and Healthcare products Regulatory Agency for the Imfinzi/chemotherapy regimen in resectable NSCLC.
David Harland, head of oncology medical affairs, AZ UK, said the approval “[marked] a major advancement and opens a new chapter in the treatment of resectable NSCLC”.
Regulatory applications are also currently under review in the EU and several other countries for the use of Imfinzi in this setting.