Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer

Tamer Al-Batsh,1 Nayef Abdel-Razeq,2 Yosra Al-Masri,1 Osama El-Khatib,1 Baha Sharaf,1 Faris Tamimi,1 Hikmat Abdel-Razeq1,3 1Section of Hematology and Medical Oncology, Department of Internal Medicine, King Hussein Cancer Center, Amman, 11941, Jordan; 2Department of Hematology and Medical Oncology, M...

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Main Authors: Al-Batsh T, Abdel-Razeq N, Al-Masri Y, El-Khatib O, Sharaf B, Tamimi F, Abdel-Razeq H
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Language:English
Published: Dove Medical Press 2025-03-01
Series:Biologics: Targets & Therapy
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Online Access:https://www.dovepress.com/escalation-and-de-escalation-strategies-for-endocrine-therapy-in-early-peer-reviewed-fulltext-article-BTT
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author Al-Batsh T
Abdel-Razeq N
Al-Masri Y
El-Khatib O
Sharaf B
Tamimi F
Abdel-Razeq H
author_facet Al-Batsh T
Abdel-Razeq N
Al-Masri Y
El-Khatib O
Sharaf B
Tamimi F
Abdel-Razeq H
author_sort Al-Batsh T
collection DOAJ
description Tamer Al-Batsh,1 Nayef Abdel-Razeq,2 Yosra Al-Masri,1 Osama El-Khatib,1 Baha Sharaf,1 Faris Tamimi,1 Hikmat Abdel-Razeq1,3 1Section of Hematology and Medical Oncology, Department of Internal Medicine, King Hussein Cancer Center, Amman, 11941, Jordan; 2Department of Hematology and Medical Oncology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA; 3School of Medicine, the University of Jordan, Amman, 11941, JordanCorrespondence: Hikmat Abdel-Razeq, Section of Hematology and Medical Oncology, Department of Internal Medicine, King Hussein Cancer Center, 202 Queen Rania Al Abdullah Street, P.O. Box: 1269, Amman, 11941, Jordan, Tel +962-6 5300460, Ext: 1000, Email habdelrazeq@khcc.joAbstract: Although adjuvant endocrine therapy (ET) greatly lowers the risk of recurrence and mortality in hormone receptor (HR)-positive early-stage breast cancer (EBC), more than 20% of patients may experience relapses within 10 years, often manifesting as incurable distant metastases. To improve outcomes, ovarian function suppression (OFS) with gonadotropin-releasing hormone agonists (GnRHa) added to tamoxifen or aromatase inhibitors like exemestane have shown significant disease-free survival (DFS) and, in some cases, overall survival (OS) benefits. CDK4/6 inhibitors, a cornerstone in metastatic HR-positive, HER2-negative breast cancer (MBC), are now being explored in EBC. Trials with abemaciclib and ribociclib have shown promise in high-risk EBC. For BRCA-mutant patients, the PARP inhibitor olaparib, as demonstrated in the OlympiA trial, significantly improved invasive DFS and OS when used as adjuvant therapy for one year. Conversely, de-escalation strategies are also emerging. Recent studies suggest that younger premenopausal women with low-risk disease may safely interrupt ET after 18– 30 months to pursue pregnancy. Additionally, genomic tumor profiling is widely utilized to decide on aggressiveness of adjuvant therapy of EBC. These advancements reflect a shift toward personalized adjuvant therapy, integrating targeted treatments like CDK4/6 inhibitors and PARP inhibitors, optimizing ET with OFS, and balancing efficacy with quality of life through de-escalation strategies. This tailored approach aims to improve long-term outcomes for HR-positive EBC patients.Keywords: breast cancer, endocrine therapy, ovarian function suppression, CDK4/6 Inhibitors, abemaciclib, ribociclib, aromatase inhibitors, tamoxifen, olaparib
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series Biologics: Targets & Therapy
spelling doaj-art-fa47767dd1ce401da3bce85e409cf7df2025-08-20T02:53:03ZengDove Medical PressBiologics: Targets & Therapy1177-54912025-03-01Volume 1997111101089Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast CancerAl-Batsh TAbdel-Razeq NAl-Masri YEl-Khatib OSharaf BTamimi FAbdel-Razeq HTamer Al-Batsh,1 Nayef Abdel-Razeq,2 Yosra Al-Masri,1 Osama El-Khatib,1 Baha Sharaf,1 Faris Tamimi,1 Hikmat Abdel-Razeq1,3 1Section of Hematology and Medical Oncology, Department of Internal Medicine, King Hussein Cancer Center, Amman, 11941, Jordan; 2Department of Hematology and Medical Oncology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA; 3School of Medicine, the University of Jordan, Amman, 11941, JordanCorrespondence: Hikmat Abdel-Razeq, Section of Hematology and Medical Oncology, Department of Internal Medicine, King Hussein Cancer Center, 202 Queen Rania Al Abdullah Street, P.O. Box: 1269, Amman, 11941, Jordan, Tel +962-6 5300460, Ext: 1000, Email habdelrazeq@khcc.joAbstract: Although adjuvant endocrine therapy (ET) greatly lowers the risk of recurrence and mortality in hormone receptor (HR)-positive early-stage breast cancer (EBC), more than 20% of patients may experience relapses within 10 years, often manifesting as incurable distant metastases. To improve outcomes, ovarian function suppression (OFS) with gonadotropin-releasing hormone agonists (GnRHa) added to tamoxifen or aromatase inhibitors like exemestane have shown significant disease-free survival (DFS) and, in some cases, overall survival (OS) benefits. CDK4/6 inhibitors, a cornerstone in metastatic HR-positive, HER2-negative breast cancer (MBC), are now being explored in EBC. Trials with abemaciclib and ribociclib have shown promise in high-risk EBC. For BRCA-mutant patients, the PARP inhibitor olaparib, as demonstrated in the OlympiA trial, significantly improved invasive DFS and OS when used as adjuvant therapy for one year. Conversely, de-escalation strategies are also emerging. Recent studies suggest that younger premenopausal women with low-risk disease may safely interrupt ET after 18– 30 months to pursue pregnancy. Additionally, genomic tumor profiling is widely utilized to decide on aggressiveness of adjuvant therapy of EBC. These advancements reflect a shift toward personalized adjuvant therapy, integrating targeted treatments like CDK4/6 inhibitors and PARP inhibitors, optimizing ET with OFS, and balancing efficacy with quality of life through de-escalation strategies. This tailored approach aims to improve long-term outcomes for HR-positive EBC patients.Keywords: breast cancer, endocrine therapy, ovarian function suppression, CDK4/6 Inhibitors, abemaciclib, ribociclib, aromatase inhibitors, tamoxifen, olaparibhttps://www.dovepress.com/escalation-and-de-escalation-strategies-for-endocrine-therapy-in-early-peer-reviewed-fulltext-article-BTTbreast cancerendocrine therapyovarian function suppressioncdk4/6 inhibitorsabemaciclibribociclibaromatase inhibitorstamoxifen
spellingShingle Al-Batsh T
Abdel-Razeq N
Al-Masri Y
El-Khatib O
Sharaf B
Tamimi F
Abdel-Razeq H
Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
Biologics: Targets & Therapy
breast cancer
endocrine therapy
ovarian function suppression
cdk4/6 inhibitors
abemaciclib
ribociclib
aromatase inhibitors
tamoxifen
title Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
title_full Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
title_fullStr Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
title_full_unstemmed Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
title_short Escalation and De-Escalation Strategies for Endocrine Therapy in Early-Stage Breast Cancer
title_sort escalation and de escalation strategies for endocrine therapy in early stage breast cancer
topic breast cancer
endocrine therapy
ovarian function suppression
cdk4/6 inhibitors
abemaciclib
ribociclib
aromatase inhibitors
tamoxifen
url https://www.dovepress.com/escalation-and-de-escalation-strategies-for-endocrine-therapy-in-early-peer-reviewed-fulltext-article-BTT
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