Korean Journal of Clinical Pharmacy (한국임상약학회지)

Korean College Of Clinical Pharmacy (한국임상약학회)
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A Comparative Study on the Clinical Efficacy and Safety between Combination Therapy with CDK 4/6 Inhibitor and AI Versus AI Monotherapy in HR+/HER type2- Advanced Breast Cancer: Updated Meta-analysis

메타분석을 이용한 호르몬 수용체 양성/인체 상피세포 성장 인자 수용체 음성 진행성 유방암에서 사이클린 의존성 인산화효소 4/6 억제제와 방향화효소 억제제 병용요법과 방향화효소 억제제 단독요법의 임상적 유효성 및 안전성 비교 연구

  • 김민지 (경성대학교 약학대학) ;
  • 김경 (경성대학교 약학대학) ;
  • 조문경 (경성대학교 약학대학) ;
  • 손기호 (경성대학교 약학대학) ;
  • 백인환 (경성대학교 약학대학)
  • Received : 2019.10.22
  • Accepted : 2020.02.17
  • Published : 2020.03.31
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Abstract

Objective: The aim of the study was to perform a meta-analysis of randomized clinical trials to compare the clinical efficacy and safety between combination of cyclin-dependent kinase (CDK) 4/6 inhibitors with aromatase inhibitors (AIs) and AIs alone in patients with hormone receptor+/human epidermal growth factor receptor type2-(HR+/HER2-) advanced breast cancer. Methods: Published clinical studies were identified through electronic database searches until February 2019. Literature qualities were assessed by the Scottish Intercollegiate Guidelines Network Checklist. Key endpoints of efficacy were progression-free survival (PFS), objective response rate (ORR), and clinical benefit (CB). Endpoints of safety were adverse events (AEs) (neutropenia, leukopenia, any grade 3/4 AEs, and serious AEs) and on-treatment death. Meta-analysis was performed using the RevMan 5.3 software. Results: The selected five studies were evaluated as "good" in quality assessment. Compared to AIs alone, the combination therapy significantly improved PFS (pooled hazard ratio=0.55; 95% confidence interval (CI) 0.49-0.62), ORR (odds ratio=1.78; 95% CI=1.49-2.13), and CB (odds ratio=1.86; 95% CI=1.51-2.28). The prevalence of AEs was significantly higher in the combination group than in the AIs alone group. On-treatment death was greater in the combination group than in the AIs alone group, although insignificant. Conclusion: The combination therapy of CDK4/6 inhibitors with AIs was more effective for the treatment of HR+/HER2- advanced breast cancer, but less safe than AIs alone. The combination therapy should be effectively managed through patient monitoring, and further studies are needed to reduce AEs in the combination therapy of CDK4/6 inhibitors with AIs.

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References

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