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ER-positive is one of the Receptor statuses identified in the classification of breast cancer.Receptor status was traditionally considered by reviewing each individual receptor (ER, PR, her2) in turn, but newer approaches look at these together, along with the tumor grade, to categorize breast cancer into several conceptual molecular classes [1] that have different prognoses [2] and may have ...
HER2 proteins have been shown to form clusters in cell membranes that may play a role in tumorigenesis. [26] [27] Evidence has also implicated HER2 signaling in resistance to the EGFR-targeted cancer drug cetuximab. [28] The high expression of HER2 correlates with better survival in esophageal adenocarcinoma. [29]
Triple-negative breast cancer (TNBC) is any breast cancer that either lacks or shows low levels of estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) overexpression and/or gene amplification (i.e. the tumor is negative on all three tests giving the name triple-negative). [1]
Palbociclib is indicated in HR+, HER2- metastatic breast cancer cells. Because CDK4/6 inhibition acts directly downstream of the endocrine therapy targets, cross-therapy resistance could possibly develop as a result of patient progression on hormone-therapy.
Abemaciclib was approved for the adjuvant treatment of HR+, HER2-, node-positive adjuvant breast cancer at high risk of recurrence in March 2023. [15] [16] As of 2023, abemaciclib was involved in two Phase III clinical trials: The SARC041 study compares abemaciclib versus placebo in patients with advanced dedifferentiated liposarcoma. [17]
Notably, Trodelvy is the standard of care for second‐line metastatic triple‐negative breast cancer, with ongoing adoption in the pre‐treated HR+/HER2‐ metastatic breast cancer setting.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 December 2024. Cancer that originates in mammary glands Medical condition Breast cancer An illustration of breast cancer Specialty Oncology Symptoms A lump in a breast, a change in breast shape, dimpling of the skin, fluid from the nipple, a newly inverted nipple, a red scaly patch of skin on the ...
In early-stage HER2-positive breast cancer, trastuzumab-containing regimens improved overall survival (Hazard ratio (HR) = 0.66) and disease-free survival (HR = 0.60). [38] Increased risk of heart failure (RR = 5.11) and decline in left ventricular ejection fraction ( relative risk RR = 1.83) were seen in these trials as well. [ 38 ]