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| http://dx.doi.org/10.1007/s40487-023-00249-0 | DOI Listing |
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Exploring the clinicopathological parameters of HER2 low breast cancers: insights from a retrospective cohort study.
Korean J Clin Oncol
December 2024
Department of Pathology, Safdarjung Hospital, Vardhman Mahavir Medical College, New Delhi, India.
Purpose: Breast cancer subtypes are delineated by human epidermal growth factor receptor 2 (HER2) expression, pivotal in treatment selection. HER2-positive tumors typically respond to targeted therapies, whereas HER2-negative tumors lack HER2 overexpression. However, a subset exhibits low HER2 expression without amplification, termed HER2 low breast cancer.
View Article and Find Full Text PDFRecent advances of antibody-drug conjugates in treating breast cancer with different HER2 status.
Ther Adv Med Oncol
January 2025
Department of General Surgery, The First Affiliated Hospital of Soochow University, No. 899, Pinghai Road, Suzhou, Jiangsu 215006, China.
Despite the availability of multiple treatment options for breast cancer, challenges such as adverse events, drug resistance, and disease progression persist for patients. The identification of human epidermal growth factor receptor 2 (HER2) as an oncogenic driver in a subset of breast cancers, alongside the development of HER2-targeted therapies, has significantly improved the prognosis of HER2-amplified breast cancers. However, therapeutic options remain limited for HER2-overexpressing or HER2-negative breast cancers.
View Article and Find Full Text PDFHuman Epidermal Growth Factor Receptor 2 Positive Advanced Gastric or Esophagogastric Adenocarcinoma: Reflecting on the Past to Gain a New Insights.
Curr Oncol Rep
January 2025
Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa City, Chiba, Japan.
Purpose Of Review: Human epidermal growth factor receptor 2 (HER2) is a critical target in advanced gastric cancer (AGC). This review highlights the current treatment landscape, lessons learned from past clinical trials, and prospects for future treatment strategies for HER2-positive AGC.
Recent Findings: Trastuzumab had been the standard treatment for HER2-positive AGC for a decade, and subsequently, trastuzumab deruxtecan, an antibody-drug conjugate (ADC), emerged with an impressive response.
Neratinib enhances the efficacy of CDK4/6 inhibitor plus endocrine therapy in HR/HER2-low breast cancer cell line ZR-75-1 via hsa-miR-23a-5p.
Sci Rep
December 2024
Chinese Medicine Guangdong Laboratory, Hengqin, 519031, Guangdong, China.
HR/HER2-low breast cancer is a significant subgroup of conventional HR/HER2-negative breast cancer, and combination of CDK4/6 inhibitor and endocrine therapy is the standard first-line and second-line treatments for advanced HR/HER2-low breast cancer. Nevertheless, it remains uncertain whether HER2 signaling affects the effectiveness of CDK4/6 inhibitor administered in combination with endocrine therapy for HR/HER2-low breast cancer and suitable intervention measures. This study revealed poor efficacy for CDK4/6 inhibitor combined with endocrine therapy for HR/HER2-low breast cancer in vitro and in vivo models.
View Article and Find Full Text PDFIndependent Validation of a HER2-low Focused IHC Scoring System for Enhanced Pathologist Precision and Consistency.
Mod Pathol
December 2024
Anatomical Pathology, Peter MacCallum Cancer Centre, Melbourne, Australia.
For two decades the ASCO CAP HER2 testing criteria have included 0 and 1+ scores, but this distinction was inconsequential. Now, based on the DESTINY Breast-04 Trial (DB-04) results, for patients with metastatic breast cancer it underpins eligibility for T-DXd treatment. Discerning 0 from 1+ IHC staining is challenging, as HER2 low is not a biologically distinct cancer subset, there are no reference standards or controls and second-tier tests do not apply.
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