Gilead's $21 Billion Acquisition of Trodelvy Turns Bittersweet
03 Jun 2024
AcquisitionADCDrug ApprovalImmunotherapy
In the world of biotech acquisitions, Gilead's $21 billion purchase of Immunomedics and its lead drug Trodelvy has become a topic of much discussion. Back in 2020, Gilead acquired Immunomedics at a 108% premium, banking on Trodelvy's potential as the first FDA-approved Trop-2 directed antibody-drug conjugate (ADC).
Gilead's rationale was clear - with its hepatitis and HIV drugs facing declining sales, the company needed a new "blockbuster" to offset those losses. Trodelvy, approved for triple-negative breast cancer and with promise in other solid tumors, seemed like the perfect fit. Early sales of $201 million in the first two months only bolstered Gilead's optimism, with projections of the drug reaching $4 billion in peak annual sales.
However, the acquisition has not played out as smoothly as Gilead had hoped. Trodelvy has faced two major setbacks recently. In May 2023, Gilead announced that Trodelvy failed to outperform chemotherapy in a late-stage trial for metastatic urothelial cancer. The study also linked Trodelvy to increased treatment-related deaths, primarily due to neutropenic complications.
This comes on the heels of another disappointing result in April 2023, where Trodelvy failed to improve outcomes in HR-positive, HER2-low breast cancerHER2-low breast cancer compared to chemotherapy. These clinical trial failures call into question whether Gilead can recoup the $21 billion it paid for Immunomedics and Trodelvy.
While Trodelvy has found success in its approved indications, its ability to expand into larger cancer markets remains uncertain. Gilead is now left analyzing the data and working with the FDA to determine the next steps for this high-stakes acquisition. The future of Trodelvy, and Gilead's strategy to find its next blockbuster, hangs in the balance.
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