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Merck’s Therapy Extends Survival in Hard-to-Treat Uterine Cancer Patients

Researchers said the infusion also cut tumour growth risk by 41% and shrank tumors in 35% of patients, compared with 17% on chemotherapy.

  • On Monday, October 26, 2026, researchers presented phase 3 trial results at the European Society For Medical Oncology showing sacituzumab tirumotecan reduced death risk by 32% in patients with advanced endometrial cancer.
  • Endometrial cancer incidence in UK women under 50 has doubled over 25 years, driven largely by the obesity epidemic and associated hormonal imbalances that experts say fuel rapid cell division.
  • The trial involved 776 women with advanced disease; 35.1% treated with sac-TMT experienced tumor shrinkage versus 17.3% on standard chemotherapy, while the drug cut progression risk by 41%.
  • Study principal investigator Dr. Bhavana Pothuri stated the results establish sac-TMT as a "new standard treatment" for recurrent endometrial cancer and suggest effectiveness against other cancers where Trop-2 protein is overexpressed.
  • Merck is conducting 18 global Phase 3 studies, including 10 focused on women's cancers, to support regulatory approvals in the United States, Europe, and elsewhere outside China.
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Merck's therapy extends survival in hard-to-treat uterine cancer ...

·London, United Kingdom
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A new drug is effective in reducing the recurrence of endometrial cancer and mortality from this disease, according to an important international study published in 'The Lancet' Read

·Madrid, Spain
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A new treatment for advanced or recurrent endometrial cancer has shown promising results in a phase 3 international clinical trial involving 776 women from around 30 countries. The drug has managed to reduce the risk of disease or death progression by 41% and the risk of death by 3%, compared to conventional chemotherapy, during the study period.

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PR Newswire broke the news in Chicago, United States on Monday, October 26, 2026.
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