Detailed positive results from an interim analysis of the DESTINY-Lung02 Phase II trial showed Enhertu (trastuzumab deruxtecan) demonstrated clinically meaningful tumour responses in previously-treated patients with HER2-mutant (HER2m) unresectable and/or metastatic non-squamous non-small cell lung cancer (NSCLC). Results will be presented today as a late-breaking presentation at the European Society for Medical Oncology (ESMO) Congress 2022.
Enhertu is a specifically engineered HER2-directed antibody drug conjugate (ADC) being jointly developed and commercialised by AstraZeneca and Daiichi Sankyo.
At a pre-specified interim analysis of DESTINY-Lung02, patients receiving Enhertu at a dose of 5.4mg/kg or 6.4mg/kg demonstrated clinically meaningful activity. The safety profile for both doses was also consistent with the overall safety profile of Enhertu, with the 5.4mg/kg dose demonstrating a favourable safety profile in this patient population. A confirmed objective response rate (ORR) of 53.8% (95% confidence interval [CI] 39.5-67.8) and 42.9% (95% CI 24.5-62.8) was seen in the 5.4mg/kg and 6.4mg/kg arms respectively, as assessed by blinded independent central review (BICR). One complete response (CR) was observed in each arm (5.4mg/kg: 1.9%, 6.4mg/kg: 3.6%), with 27 (51.9%) partial responses (PR) observed in the 5.4mg/kg arm and 11 (39.3%) PRs observed in the 6.4mg/kg arm.
Koichi Goto, MD, Medical Oncologist and Investigator at National Cancer Center Hospital East, Kashiwa, Japan, said: “DESTINY-Lung02 reinforces HER2 as an actionable mutation in patients with metastatic non-small cell lung cancer and further demonstrates that Enhertu provides a clinically meaningful tumour response for these patients who have historically had limited treatment options. The response seen in this trial, along with the disease control observed support Enhertu as a potential treatment option in this type of non-small cell lung cancer.”
Cristian Massacesi, Chief Medical Officer & Oncology Chief Development Officer, AstraZeneca, said: “The clinically meaningful activity, together with the favourable safety profile seen in the DESTINY-Lung02 trial helps establish the optimal dose of Enhertu at 5.4 milligrams per kilogram in previously-treated HER2-mutant non-small cell lung cancer. As we continue to explore the potential of this important medicine across multiple HER2-targetable tumour types, these data reaffirm the need to undertake HER2 testing in patients diagnosed with lung cancer.”
Ken Takeshita, MD, Global Head, R&D, Daiichi Sankyo, said: “The DESTINY-Lung02 results are consistent with the data previously seen with Enhertu in non-small cell lung cancer and the efficacy demonstrated in this interim analysis, which supported the recent US FDA accelerated approval of Enhertu in patients with HER2-mutant non-small cell lung cancer, reinforces the potential to establish this medicine as a treatment option for these patients. These data will help inform future regulatory submissions worldwide with the goal of continuing to offer this innovative medicine to as many patients as possible.”
Summary of results: DESTINY-Lung02
