This application was granted priority review and breakthrough designation. This review used the Assessment Aid, a voluntary submission from the applicant to facilitate the FDA’s assessment. For more information regarding the OCE’s efforts to modernize dose selection for oncology products, refer to Project Optimus. This application used advice from the FDA Oncology Center of Excellence Project Optimus to conduct a dose randomization study, which led to a lower dose being approved.
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View full prescribing information for Enhertu. The prescribing information includes a Boxed Warning advising health professionals of the risk of interstitial lung disease and embryo-fetal toxicity. The most common (≥20%) adverse reactions, including laboratory abnormalities, were nausea, decreased white blood cell count, decreased hemoglobin, decreased neutrophil count, decreased lymphocyte count, decreased platelet count, decreased albumin, increased aspartate aminotransferase, increased alanine aminotransferase, fatigue, constipation, decreased appetite, vomiting, increased alkaline phosphatase, and alopecia. The confirmed ORR was 58% (95% CI: 43, 71) and the median DOR was 8.7 months (95% CI: 7.1, not estimable ). The major efficacy outcome measures were confirmed objective response rate (ORR) as assessed by blinded independent central review using RECIST v1.1 and duration of response (DOR). Of the 52 patients in the primary efficacy population DESTINY-Lung02, the median age was 58 years (range 30 to 78), 69% were female 79% were Asian, 12% were White, and 10% were of other races. Patients received Enhertu 5.4 mg/kg by intravenous infusion, every 3 weeks until unacceptable toxicity or disease progression. Patients were selected for treatment with Enhertu based on the presence of activating HER2 (ERBB2) mutations in a tumor specimen. Eligible patients were required to have unresectable or metastatic HER2-mutant non-squamous NSCLC with disease progression after prior systemic therapy. The efficacy results of the approved recommended dose of 5.4 mg/kg given intravenously every 3 weeks are described below.Įfficacy for accelerated approval was based on DESTINY-Lung02, a multicenter, multi-cohort, randomized, blinded, dose-optimization trial. Increased rates of interstitial lung disease/pneumonitis were observed at the higher dose. Response rates were consistent across dose levels. If no mutation is detected in a plasma specimen, the tumor tissue should be tested.Įnhertu was evaluated at a 6.4 mg/kg dose (n=152) across multiple trials and at a 5.4 mg/kg dose (n=102) in a randomized dose-finding trial. This is the first drug approved for HER2-mutant NSCLC.įDA also approved the Life Technologies Corporation’s Oncomine™ Dx Target Test (tissue) and the Guardant Health, Inc.’s Guardant360® CDx (plasma) as companion diagnostics for Enhertu. On August 11, 2022, the Food and Drug Administration granted accelerated approval to fam-trastuzumab deruxtecan-nxki (Enhertu, Daiichi Sankyo, Inc.) for adult patients with unresectable or metastatic non-small cell lung cancer (NSCLC) whose tumors have activating human epidermal growth factor receptor 2 HER2 (ERBB2) mutations, as detected by an FDA-approved test, and who have received a prior systemic therapy.
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