The effect of dose reduction of CDK4/6 inhibitors on survival in postmenopausal HR+ HER2-negative metastatic breast cancer.

IF 2.9 3区医学 Q2 ONCOLOGY

Expert Review of Anticancer Therapy Pub Date : 2025-04-08 DOI:10.1080/14737140.2025.2490289

Furkan Ceylan, Safa Can Efil, Didem Sener, Ates Kutay Tenekeci, Burak Bilgin, Şebnem Yücel, Eren Göktuğ Ceylan, Mutlu Hızal, Mehmet Ali Nahit Şendur, Muhammed Bülent Akıncı, Öznur Bal, Bülent Yalçın

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引用次数: 0

Abstract

Background: This study aimed to evaluate the effect of dose reduction of CDK4/6 inhibitors on survival outcomes in postmenopausal patients with HR+ HER2-negative metastatic breast cancer (mBC).

Methods: A retrospective cohort study was conducted involving 164 postmenopausal patients with HR+ HER2-negative mBC who received CDK4/6 inhibitors between 2021 and 2024. Clinical parameters were systematically analyzed. Progression-free survival (PFS) and overall survival (OS) were evaluated based on dose reduction status. Survival outcomes were estimated using the Kaplan-Meier method, and independent prognostic factors were identified through multivariate Cox regression analysis.

Results: The median age was 61 years, with a median follow-up of 23.5 months. The median PFS was 23.3 months, while median OS was not reached. Dose reduction occurred in 45 patients (27%), who exhibited significantly worse survival (PFS HR: 1.67, 95% CI: 1.02-2.72, p = 0.042; OS HR: 2.54, 95% CI: 1.34-4.83, p = 0.004). Dose reduction and liver metastases were independent risk factors for shorter PFS and OS, while treatment in later lines was associated with shorter PFS.

Conclusion: Dose reductions in CDK4/6 inhibitors were associated with worse survival outcomes in postmenopausal HR+ HER2- mBC patients. Future biomarker-driven studies are needed to guide personalized dose adjustments and optimize treatment efficacy.

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来源期刊

Expert Review of Anticancer Therapy 医学-肿瘤学

CiteScore

5.10

自引率

3.00%

发文量

100

审稿时长

4-8 weeks

期刊介绍： Expert Review of Anticancer Therapy (ISSN 1473-7140) provides expert appraisal and commentary on the major trends in cancer care and highlights the performance of new therapeutic and diagnostic approaches. Coverage includes tumor management, novel medicines, anticancer agents and chemotherapy, biological therapy, cancer vaccines, therapeutic indications, biomarkers and diagnostics, and treatment guidelines. All articles are subject to rigorous peer-review, and the journal makes an essential contribution to decision-making in cancer care. Comprehensive coverage in each review is complemented by the unique Expert Review format and includes the following sections: Expert Opinion - a personal view of the data presented in the article, a discussion on the developments that are likely to be important in the future, and the avenues of research likely to become exciting as further studies yield more detailed results Article Highlights – an executive summary of the author’s most critical points.