FDA Approves Herzuma, Biosimilar Herceptin

FDA has approved Celltrion’s Herzuma (transtuzumab-pkrb) as a biosimilar to Genentech’s Herceptin (transtuzumab) for patients with HER2-overexpressing breast cancer. An agency notice says Herzuma is a HER2/neu receptor antagonist indicated to treat HER2-overexpressing breast cancer.

The Herzuma prescribing information says common expected side effects include headache, diarrhea, nausea, chills, fever, infection, congestive heart failure, insomnia, cough, and rash. Serious expected side effects include worsening of chemotherapy-induced neutropenia. Like Herceptin, the labeling contains a Boxed Warning for increased risks of cardiomyopathy, infusion reactions, pulmonary toxicity, and embryo-fetal toxicity.

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