FDA approves Roche’s Phesgo for HER2-positive breast cancer

The FDA has approved Phesgo, the fixed-dose combination of Perjeta (pertuzumab) and Herceptin (trastuzumab) with hyaluronidase, administered by subcutaneous injection in combination with intravenous chemotherapy, for the treatment of early and metastatic HER2-positive breast cancer.

This is the first time that Roche has combined two monoclonal antibodies that can be administered by a single SC injection.

“The FDA approval of Phesgo reflects our commitment to improving outcomes for the many people living with HER2-positive breast cancer,” said Levi Garraway, M.D., Ph.D., Chief Medical Officer and Head of Global Product Development.

“Phesgo offers a treatment administration that supports the needs and preferences of individual patients, and helps to meet the increasing demand across the healthcare system for faster and more flexible treatment options.”

The approval is based on results from the pivotal phase III FeDeriCa study, which met its primary endpoint with Phesgo showing non-inferior levels of Perjeta in the blood during a given dosing interval (Ctrough), when compared to IV administration of Perjeta.

The safety profile of Phesgo with chemotherapy was comparable to IV administration of Perjeta plus Herceptin and chemotherapy, and no new safety signals were identified, including no meaningful difference in cardiac toxicity.

The most common adverse events in both arms were alopecia, nausea, diarrhoea and anaemia.

The phase II PHranceSCa study showed that 85% of people receiving treatment for HER2-positive breast cancer preferred treatment under the skin to IV administration due to less time in the clinic and more comfortable treatment administration.

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