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Breast Cancer Clinical Trial Fails to Meet Primary Endpoint

A phase 2 trial evaluating amcenestrant as a potential treatment for locally advanced or metastatic ER+/HER2- breast cancer failed to meet its primary endpoint of improving progression-free survival, according to a release from the manufacturer. 

Amcenestrant is an investigational optimized oral selective estrogen receptor degrader (SERD). 

The AMEERA-3 trial evaluated the safety and efficacy of amcenestrant as a monotherapy compared to the physician’s choice of a single-agent endocrine treatment. Overall survival served as a key secondary endpoint. 

The trial also compared the safety profile in the two groups and the quality of life based on patient-reported outcomes. The release noted that there were no new safety signals during the trial and that the safety profile of amcenestrant was consistent with earlier studies. 

“While we are disappointed with the AMEERA-3 results, we continue to investigate amcenestrant in patients with earlier stages of breast cancer with different tumor profiles and where different standard of care treatments are used,” John Reed, MD, PhD, head of research and development at Sanofi, said in the release. 

Research with amcenestrant is ongoing in combination with palbociclib as a first-line treatment of ER+/HER2- metastatic breast cancer in the phase 3 AMEEERA-5 trial and early-stage breast cancer patients in the adjuvant setting in the phase 3 AMEERA-6 trial. AMEERA-5 is fully enrolled, while AMEERA-6 is enrolling patients. 

Full results from the AMEERA-3 trial are expected to be published in a future medical journal. 

Reference:
https://www.sanofi.com/en/media-room/press-releases/2022/2022-03-14-07-00-00-2402216 

Images: Getty Images, Pixabay

By Adam Hochron

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