Daiichi Sankyo, AstraZeneca ‘Breakthrough’ for Enhertu

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FDA has granted Daiichi Sankyo and AstraZeneca a breakthrough therapy designation for Enhertu (fam-trastuzumab deruxtecan-nxki) for treating patients with HER2 positive unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma who have received two or more prior regimens including trastuzumab. The designation was based on results from the DESTINY-Gastric01 study that demonstrated clinically meaningful and statistically significant results, including objective response and survival increases compared to a physician’s chemotherapy choice, according to the companies. In the trial, the therapy’s overall safety and tolerability profile was reported to be consistent with that seen in a Phase 1 trial in which the most common adverse events were hematologic and gastrointestinal including neutrophil count decrease, anemia, nausea and decreased appetite. Enhertu recently received accelerated approval in the U.S. for treating adult patients with unresectable or metastatic HER2 positive metastatic breast cancer who have received two or more prior anti-HER2 based regimens.

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