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U.S. FDA Approves the First Treatment for Metastatic Triple-Negative Breast Cancer Shown to Improve Progression-Free and Overall Survival

April 8, 2021 • 2:56 pm CDT
(Vax Before Cancer)

California-based Gilead Sciences, Inc. announced that the U.S. Food and Drug Administration (FDA) has granted full approval to Trodelvy® for adult patients with unresectable locally advanced or metastatic triple-negative breast cancer (TNBC) who have received two or more prior systemic therapies, at least one of them for metastatic disease.

The approval is supported by data from the Phase 3 ASCENT study, in which Trodelvy demonstrated a statistically significant and clinically meaningful 57% reduction in the risk of disease worsening or death (progression-free survival (PFS)), extending median PFS to 4.8 months from 1.7 months with chemotherapy (HR: 0.43; 95% CI: 0.35-0.54; p<0.0001).

Trodelvy also extended median overall survival (OS) to 11.8 months vs. 6.9 months (HR: 0.51; 95% CI: 0.41-0.62; p<0.0001), representing a 49% reduction in the risk of death.

Trodelvy is directed to the Trop-2 receptor, a protein frequently expressed in multiple types of epithelial tumors, including TNBC, where high expression is associated with poor survival and relapse.

“A metastatic TNBC diagnosis is frightening. As an aggressive and difficult-to-treat disease, it’s a significant advance to have an FDA-approved treatment option with a proven survival benefit for patients with metastatic disease that continues to progress,” commented Ricki Fairley, Founder, and CEO of Touch, the Black Breast Cancer Alliance, in a press statement.

“For far too long, people with metastatic TNBC had very few treatment options. Today’s news continues the progress of bringing more options to treat this devastating disease.”

TNBC is an aggressive type of breast cancer, accounting for approximately 15% of all breast cancers. The disease is diagnosed more frequently in younger and premenopausal women and is more prevalent in African American and Hispanic women

Prior to the FDA approval of Trodelvy, patients with previously treated metastatic TNBC had few treatment options in this high unmet-need setting. The FDA granted accelerated approval to Trodelvy in April 2020.

Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company operates in more than 35 countries worldwide, with headquarters in Foster City, California.