ArticleOncoTargets and therapy2020
Prevalence of ESR1 Mutation in Chinese ER-Positive Breast Cancer.
Article in OncoTargets and therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Article
- Clinical Evidence of Circulating Tumor DNA Application in Aggressive Breast Cancer.Diagnostics (Basel, Switzerland) · 2023Review
- Characterization of Frequently Mutated Cancer Genes and Tumor Mutation Burden in Chinese Breast Cancer.Frontiers in oncology · 2021Article
- Detection ofFrontiers in oncology · 2020Review
- Estrogen Receptor Bio-Activities Determine Clinical Endocrine Treatment Options in Estrogen Receptor-Positive Breast Cancer.Technology in cancer research & treatmentReview
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundESR1 mutation and its possible relation to endocrine therapy resistance in ER-positive breast cancers have been studied with respect to genetic sequencing data from Western patients but rarely from Chinese patients. This study aimed to investigate the prevalence of ESR1 mutation in Chinese primary and metastatic ER-positive breast cancer.
methodsTumor samples from 297 primary breast cancer (PBC) patients and blood samples from 43 metastatic breast cancer (MBC) patients were obtained to perform whole exon sequencing of the ESR1 gene through next-generation sequencing (NGS). Clinicopathological features of MBC patients were listed and grouped to explore potential factors in ESR1 mutations.
resultsA total of 15 ESR1 variations, including 11 point mutations, 1 in-frame deletion mutation, 1 synonymous mutation, and 2 amplifications were identified in 13 patients. The ESR1 mutation rate was 1% (3/297) in PBC patients and 18.6% (8/43) in MBC patients. All ESR1 point mutations occurred in the estrogen receptor ligand-binding domain. Six (54.5%) of the 11 point mutations were hotspot mutations. Among all MBC patients, the ESR1 mutation rate in those who had a treatment history using aromatase inhibitors (AI) was significantly higher than those who did not (25.8% versus 0%, P=0.015). Moreover, the ESR1 mutation rate in those who received AI treatment over a period of 12 months was significantly higher than in those whose treatment lasted less than 12 months [36.3% versus 0%, P<0.001].
conclusionESR1 mutations were more frequently observed in the circulating cell-free DNA of MBC patients than in PBC patients among the Chinese cohort, and higher among those pretreated with AI, suggesting that such mutations may undergo selection during AI treatment.
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