Mitogen-activated protein kinase phosphatase 1 (MKP1 or DUSP1) is an antiapoptotic phosphatase that is overexpressed in many cancers, including breast cancer. MKP1 expression is inducible in radiation-treated breast cancer cells, and correlates with human epidermal growth factor receptor 2 (ERBB2, HER2) expression. The role of MKP1 in therapy resistance suggests that targeting MKP1 in HER2-positive breast tumors may significantly enhance the efficacy of anti-HER2 and other anticancer therapies.
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http://dx.doi.org/10.1080/23723556.2014.997518 | DOI Listing |
BMJ Oncol
September 2023
Department of Health Services Research & Policy, London School of Hygiene & Tropical Medicine, London, UK.
Objective: Although adjuvant trastuzumab-based treatment (TBT) improves survival for patients with HER2-positive early invasive breast cancer (EIBC), risk of toxicity grows as patient age increases. We examined use of TBT and associated severe acute toxicity event (SATE) rates to understand the real-world impact.
Methods And Analysis: Women (50+ years), newly diagnosed with HER2-positive EIBC in England, 2014-2019, were identified from Cancer Registry data, linked to the Systemic Anti-Cancer Therapy dataset for TBT information.
Tumori
January 2025
Oncology Unit, ASST Bergamo ovest, Treviglio, Italy.
Evidence from randomized trials regarding adjuvant chemotherapy and its impact on survival in older patients with resected breast cancer is limited. This study evaluates the current evidence on the use of adjuvant chemotherapy and its effects on overall mortality and breast cancer-specific mortality in older patients. A systematic review and meta-analysis were conducted on the impact of adjuvant chemotherapy in elderly patients with HER2-negative breast cancer.
View Article and Find Full Text PDFJ Transl Med
January 2025
Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy.
Background: HER2-targeted therapies have revolutionized the treatment of HER2-positive breast cancer patients, leading to significant improvements in tumor response rates and survival. However, resistance and incomplete response remain considerable challenges. Proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibition is a novel therapeutic strategy for the management of dyslipidemia by enhancing the clearance of low-density lipoprotein cholesterol receptors, however recent evidence also shows links between PCSK9 and cancer cells.
View Article and Find Full Text PDFFront Oncol
January 2025
Department of Oncology, Tawam Hospital, Al Ain, United Arab Emirates.
Breast cancer is the most frequently diagnosed cancer in the UAE and a leading cause of cancer-related mortality. Although early diagnosis contributes to favorable prognoses, novel treatment modalities like antibody-drug conjugates (ADCs) have significantly broadened the therapeutic landscape for patients in metastatic settings. The recognition of "HER2-low" expression as a targetable category has caused a paradigm shift in the management of breast cancer.
View Article and Find Full Text PDFClin Breast Cancer
January 2025
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA; Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA; Harvard Medical School, Boston, MA.
Background: We sought to evaluate prognostic factors in human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer (MBC) and their relationship with short- and long-term overall survival (OS).
Methods: Using the Surveillance, Epidemiology, and End Results (SEER) database, we evaluated patients with de novo HER2-positive MBC diagnosed from 2010 to 2018. Univariate analyses were performed to determine effect of each variable on OS.
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