May 3, 2026 · Lancet (London, England) · DOI: 10.1016/S0140-6736(26)00313-2

Effects of ovarian ablation or suppression on breast cancer recurrence and survival: patient-level meta-analysis of 15 000 women in 23 randomised trials

Listen to this summary

The authors aimed to evaluate the impact of ovarian function suppression (OFS) on breast cancer recurrence and survival in premenopausal women with estrogen receptor-positive or unknown early breast cancer. Their meta-analysis of data from 23 randomized trials involving nearly 15,000 women found that OFS significantly reduced recurrence rates and breast cancer mortality, particularly in those confirmed premenopausal after chemotherapy, highlighting its effectiveness regardless of concurrent treatments like tamoxifen.

Early Breast Cancer Trialists' Collaborative Group (EBCTCG). Electronic address:, Early Breast Cancer Trialists' Collaborative Group (EBCTCG)

This is one of 33,000+ journals available on OSLR. Try it free for 14 days.

Free 14-day trial. 33,000+ journals. Cancel anytime.

14-day free trial. No commitment.

"Oslr has become part of my weekly routine on my day off. The clinical relevance of the summaries is outstanding — I'd rate it 9/10. Being able to consume research hands-free is a huge advantage for busy physicians."

Dr. Jennifer Thompson

Dr. Jennifer Thompson

Portland, OR

Stay current without falling behind

33,000+ journals. 3-minute audio summaries. Free for 14 days.

Download on the App StoreGet it on Google Play