Datopotamab deruxtecan granted Priority Review in the US for patients with previously treated advanced EGFR-mutated non-small cell lung cancer

Application based on TROPION-Lung05 trial and supported by data from TROPION-Lung01 and TROPION-PanTumor01 trials

Approval would mark the first for AstraZeneca and Daiichi Sankyo's datopotamab deruxtecan in lung cancer

AstraZeneca and Daiichi Sankyo's Biologics License Application (BLA) for datopotamab deruxtecan (Dato-DXd) has been accepted and granted Priority Review in the US for the treatment of adult patients with locally advanced or metastatic epidermal growth factor receptor-mutated (EGFRm) non-small cell lung cancer (NSCLC) who have received prior systemic therapies, including an EGFR-directed therapy.

The Food and Drug Administration (FDA) grants Priority Review to applications for medicines that, if approved, would offer significant improvements over available options by demonstrating safety or efficacy improvements, preventing serious conditions or enhancing patient compliance.¹ The Prescription Drug User Fee Act date, the FDA action date for its regulatory decision, is anticipated during the third quarter of 2025. Datopotamab deruxtecan was previously granted Breakthrough Therapy Designation (BTD) by the FDA for this patient population.

The BLA and BTD are based on data from the TROPION-Lung05 Phase II trial and supported by data from the TROPION-Lung01 Phase III trial. In addition, the BLA is supported by data from the TROPION-PanTumor01 Phase I trial. In a pooled analysis of patients with previously treated advanced or metastatic EGFRm NSCLC in the TROPION-Lung05 and TROPION-Lung01 trials presented at the European Society for Medical Oncology (ESMO) Asia 2024 Congress, datopotamab deruxtecan demonstrated a confirmed objective response rate (ORR) of 42.7% (95% confidence interval [CI] 33.6-52.2) as assessed by blinded independent central review (BICR) and a median duration of response (DoR) of 7.0 months (95% CI 4.2-9.8). The safety profile of datopotamab deruxtecan was consistent with previous reports from the TROPION-Lung05 and TROPION-Lung01 trials, with no new safety concerns identified.

Susan Galbraith, Executive Vice President, Oncology R&D, AstraZeneca, said: "Acquired resistance to front-line therapies and, ultimately, disease progression are unfortunate realities for most patients with advanced EGFR-mutated non-small cell lung cancer. This Priority Review, and the previously granted Breakthrough Therapy Designation, recognize the potential for datopotamab deruxtecan to provide a much-needed option to patients whose disease has become resistant to current treatments."

Ken Takeshita, MD, Global Head, R&D, Daiichi Sankyo, said: "Treating advanced EGFR-mutated non-small cell lung cancer presents a significant challenge due to the limited efficacy of available treatments once the disease has progressed following front-line therapies, including the use of an EGFR-tyrosine kinase inhibitor. If approved, datopotamab deruxtecan could become the first TROP2-directed antibody drug conjugate for lung cancer, providing a promising option for patients."

Datopotamab deruxtecan is a specifically engineered TROP2-directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo and being jointly developed by AstraZeneca and Daiichi Sankyo.

AstraZeneca and Daiichi Sankyo are evaluating datopotamab deruxtecan alone and in novel combinations as treatment for patients with NSCLC in seven Phase III trials including the TROPION-Lung14 and TROPION-Lung15 trials of datopotamab deruxtecan alone and with osimertinib as treatment for patients with advanced or metastatic EGFRm nonsquamous NSCLC.

Notes

Advanced non-small cell lung cancer

Nearly 2.5 million lung cancer cases were diagnosed globally in 2022.² Lung cancer is broadly split into small or non-small cell lung cancer, the latter accounting for about 80% of cases.³ Approximately 10 to 15% of patients with NSCLC in the US and Europe, and 30 to 40% of patients in Asia have an EGFR mutation.^4,5 The majority of EGFR mutations occur in tumors of nonsquamous histology.⁶

For patients with tumors that have an EGFR mutation, the established 1st-line treatment in the metastatic setting is an EGFR-TKI.⁷ While EGFR-TKIs have improved outcomes in the 1st-line setting, most patients eventually experience disease progression and receive subsequent therapies, such as chemotherapy.^8-11

TROP2 is a protein broadly expressed in the majority of NSCLC tumors.¹² There is currently no TROP2-directed ADC approved for the treatment of lung cancer.^7,13

TROPION-Lung05

TROPION-Lung05 is a global, multicenter, single-arm, open-label Phase II trial evaluating the efficacy and safety of datopotamab deruxtecan in patients with locally advanced or metastatic NSCLC with actionable genomic alterations who have progressed on at least one TKI (with or without other systemic therapies) and on or after one regimen of platinum-based chemotherapy. Patients receiving up to four prior lines of treatment with tumors with one or more genomic alterations including EGFR, ALK, ROS1, NTRK, BRAF, RET or MET were eligible for the trial.

The primary trial endpoint of TROPION-Lung05 is ORR as assessed by BICR. Secondary efficacy endpoints include DoR, disease control rate (DCR), clinical benefit rate (CBR), progression-free survival (PFS), time to response (TTR), overall survival (OS) and safety. TROPION-Lung05 enrolled 137 patients globally in Asia, Europe and North America. For more information visit ClinicalTrials.gov.

Primary results from TROPION-Lung05 were published in the Journal of Clinical Oncology in January 2025.

TROPION-Lung01

TROPION-Lung01 is a global, randomized, multicenter, open-label Phase III trial evaluating the efficacy and safety of datopotamab deruxtecan versus docetaxel in adult patients with locally advanced or metastatic NSCLC with and without actionable genomic alterations who require systemic therapy following prior treatment. Patients with actionable genomic alterations were previously treated with an approved targeted therapy and platinum-based chemotherapy. Patients without known actionable genomic alterations were previously treated, concurrently or sequentially, with platinum-based chemotherapy and a PD-1 or PD-L1 inhibitor.

The dual primary endpoints of TROPION-Lung01 are PFS as assessed by BICR and OS. Key secondary endpoints include investigator-assessed PFS, ORR, DoR, TTR, and DCR as assessed by both BICR and investigator, and safety. TROPION-Lung01 enrolled approximately 600 patients in Asia, Europe, North America, Oceania and South America. For more information visit ClinicalTrials.gov.

Primary results from TROPION-Lung01, as presented at the ESMO 2023 Congress, showed datopotamab deruxtecan demonstrated a statistically significant improvement in PFS over docetaxel. OS results were presented at the IASLC 2024 World Conference on Lung Cancer hosted by the International Association for the Study of Lung Cancer and simultaneously published in the Journal of Clinical Oncology in September 2024.

About TROPION-PanTumor01

TROPION-PanTumor01 is a first-in-human, open-label, two-part, multicenter Phase I trial evaluating the safety and preliminary efficacy of datopotamab deruxtecan in patients with advanced solid tumors that have relapsed or are refractory to standard treatment or for which no standard treatment is available. The dose escalation portion of the trial enrolled patients with NSCLC to assess the safety and tolerability of datopotamab deruxtecan to determine the recommended dose for expansion (6mg/kg). The dose expansion part of TROPION-PanTumor01 enrolled several different cohorts including patients with NSCLC, triple-negative breast cancer, HR-positive, HER2-low or negative breast cancer, small cell lung cancer, urothelial, gastric, pancreatic, castration resistant prostate and esophageal cancer.

Safety endpoints include dose-limiting toxicities and serious adverse events. Efficacy endpoints include ORR, DoR, TTR, PFS and OS. Pharmacokinetic, biomarker and immunogenicity endpoints are also being evaluated. TROPION-PanTumor01 enrolled approximately 900 patients in Asia and North America. For more information visit ClinicalTrials.gov.

Datopotamab deruxtecan (Dato-DXd)

Datopotamab deruxtecan (Dato-DXd) is an investigational TROP2-directed ADC. Designed using Daiichi Sankyo's proprietary DXd ADC Technology, datopotamab deruxtecan is one of six DXd ADCs in the oncology pipeline of Daiichi Sankyo, and one of the most advanced programs in AstraZeneca's ADC scientific platform. Datopotamab deruxtecan is comprised of a humanized anti-TROP2 IgG1 monoclonal antibody, developed in collaboration with Sapporo Medical University, attached to a number of topoisomerase I inhibitor payloads (an exatecan derivative, DXd) via tetrapeptide-based cleavable linkers.

Datopotamab deruxtecan clinical development program

A comprehensive global clinical development program is underway with more than 20 trials evaluating the efficacy and safety of datopotamab deruxtecan across multiple cancers, including NSCLC, triple-negative breast cancer and HR-positive, HER2-low or negative breast cancer. The program includes seven Phase III trials in lung cancer and five Phase III trials in breast cancer evaluating datopotamab deruxtecan as a monotherapy and in combination with other anticancer treatments in various settings.

Daiichi Sankyo collaboration

AstraZeneca and Daiichi Sankyo entered into a global collaboration to jointly develop and commercialize fam-trastuzumab deruxtecan-nxki in March 2019 and datopotamab deruxtecan in July 2020, except in Japan where Daiichi Sankyo maintains exclusive rights for each ADC. Daiichi Sankyo is responsible for the manufacturing and supply of fam-trastuzumab deruxtecan-nxki and datopotamab deruxtecan.

AstraZeneca in lung cancer

​AstraZeneca is working to bring patients with lung cancer closer to cure through the detection and treatment of early-stage disease, while also pushing the boundaries of science to improve outcomes in the resistant and advanced settings. By defining new therapeutic targets and investigating innovative approaches, the Company aims to match medicines to the patients who can benefit most.

The Company's comprehensive portfolio includes leading lung cancer medicines and the next wave of innovations, including osimertinib and gefitinib; durvalumab and tremelimumab; fam-trastuzumab deruxtecan-nxki and datopotamab deruxtecan in collaboration with Daiichi Sankyo; savolitinib in collaboration with HUTCHMED; as well as a pipeline of potential new medicines and combinations across diverse mechanisms of action.

AstraZeneca is a founding member of the Lung Ambition Alliance, a global coalition working to accelerate innovation and deliver meaningful improvements for people with lung cancer, including and beyond treatment.

AstraZeneca in oncology

AstraZeneca is leading a revolution in oncology with the ambition to provide cures for cancer in every form, following the science to understand cancer and all its complexities to discover, develop and deliver life-changing medicines to patients.

The Company's focus is on some of the most challenging cancers. It is through persistent innovation that AstraZeneca has built one of the most diverse portfolios and pipelines in the industry, with the potential to catalyze changes in the practice of medicine and transform the patient experience.

AstraZeneca has the vision to redefine cancer care and, one day, eliminate cancer as a cause of death.

About AstraZeneca

AstraZeneca is a global, science-led biopharmaceutical company that focuses on the discovery, development and commercialization of prescription medicines in Oncology, Rare Diseases and BioPharmaceuticals, including Cardiovascular, Renal & Metabolism, and Respiratory & Immunology. Based in Cambridge, UK, AstraZeneca's innovative medicines are sold in more than 125 countries and used by millions of patients worldwide. For more information, please visit www.astrazeneca-us.com and follow us on social media @AstraZeneca.

References

US-96963 Last Updated 1/25

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