Roche Holding AG joined rival Sanofi with a setback in the development of an oral selective estrogen receptor degrader (SERD) for locally advanced or metastatic ER-positive/HER2-negative breast cancer, giving an edge to underdog Menarini Group, which remains the only drug maker to have a successful Phase III trial in the setting.
Roche's SERD Setback Means Menarini Retains An Edge
Roche's giredestrant failed to show a benefit on progression-free survival in the Phase II acelERA trial in people with advanced breast cancer.

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