China’s National Medical Products Administration (NMPA) has granted conditional approval to AstraZeneca and Daiichi Sankyo's Enhertu (trastuzumab deruxtecan) for the treatment of previously treated patients with locally advanced or metastatic HER2-positive gastric or gastroesophageal junction cancer. This decision is grounded in data from two Phase II trials, DESTINY-Gastric06 and DESTINY-Gastric01.
The DESTINY-Gastric06 trial involved 95 Chinese patients with HER2-positive gastric cancer and showed an objective response rate of 28.8% and a median progression-free survival of 5.7 months. Meanwhile, the DESTINY-Gastric01 study, conducted with participants from Japan and South Korea, demonstrated a 40.5% response rate with Enhertu, compared to 11.3% with chemotherapy. Additionally, the median overall survival was 12.5 months for patients on Enhertu, significantly higher than the 8.4 months observed with chemotherapy.
Full approval of Enhertu for this indication will require further confirmation of its clinical benefits through additional trials.
Dave Fredrickson, executive vice president of the oncology business unit at AstraZeneca, highlighted the significance of this approval, noting that China represents over one-third of the global gastric cancer burden, with most cases diagnosed at an advanced stage. He emphasized that this approval brings a much-needed targeted treatment option to patients with HER2-positive metastatic gastric cancer in China, reflecting AstraZeneca’s commitment to expanding access to innovative cancer therapies worldwide.