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Tytuł pozycji:

ESR1 genetic alterations and their association with clinicopathologic characteristics in advanced breast cancer: a single academic institution experience.

Tytuł:
ESR1 genetic alterations and their association with clinicopathologic characteristics in advanced breast cancer: a single academic institution experience.
Autorzy:
Freitag CE; Department of Pathology, The Ohio State University, Wexner Medical Center, Columbus, OH, USA.
Mei P; Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.
Wei L; Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA.
Parwani AV; Department of Pathology, The Ohio State University, Wexner Medical Center, Columbus, OH, USA.
Li Z; Department of Pathology, The Ohio State University, Wexner Medical Center, Columbus, OH, USA. Electronic address: .
Źródło:
Human pathology [Hum Pathol] 2021 Jan; Vol. 107, pp. 80-86. Date of Electronic Publication: 2020 Nov 04.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Publication: Philadelphia, PA : W B Saunders
Original Publication: Philadelphia, W B. Saunders Co.
MeSH Terms:
Breast Neoplasms/*genetics
Breast Neoplasms/*pathology
Estrogen Receptor alpha/*genetics
Adult ; Aged ; Female ; Humans ; Middle Aged ; Mutation ; Neoplasm Invasiveness/genetics ; Retrospective Studies
Contributed Indexing:
Keywords: Breast cancer; ESR1; Endocrine therapy; Estrogen receptor; Genetic alterations; NGS
Substance Nomenclature:
0 (ESR1 protein, human)
0 (Estrogen Receptor alpha)
Entry Date(s):
Date Created: 20201106 Date Completed: 20210719 Latest Revision: 20210816
Update Code:
20240105
DOI:
10.1016/j.humpath.2020.10.007
PMID:
33157125
Czasopismo naukowe
Estrogen receptor (ER) alpha, a ligand-dependent nuclear transcription factor encoded by the ESR1 gene, is expressed in 70% of breast carcinomas (BCs) and is used as a target for endocrine-based therapies. However, some patients develop resistance to endocrine-based therapies due to ESR1 mutation, which leads to constitutive activation in the absence of ligand. We retrospectively analyzed 223 clinically advanced BCs using the FoundationOne CDX assay and found 13.9% (31/223) of cases had ESR1 genetic alterations (26 mutations and 5 amplifications). All ESR1 mutations occurred within the ligand binding domain, with the most prevalent being Y537S (42.3%) and D538G (38.5%), and all ESR1-mutated cases had a history of aromatase inhibitor use. No significant difference in clinicopathologic features was identified between ESR1-mutated and ESR1-amplified cases except higher frequency of HER2 positivity and TP53 mutations in ESR1-amplified cases. The prevalence of ESR1 mutations in ER-positive BCs was 19.1% (26/136). In comparison to ESR1-nonmutated ER-positive cases, ESR1-mutated cases demonstrated significantly higher percentage of tumor cells with ER and progesterone receptor expression, an increased tendency for overall distant metastasis and liver metastasis, higher frequency of FGF3/4/19 mutations, lower frequency of TP53 mutation, but no difference in overall survival and metastatic/recurrent intervals. In conclusion, our findings suggest that development of ESR1 mutations are selected for under the influence of estrogen deprivation, and a positive correlation between ESR1 mutations and ER protein expression may exist.
(Copyright © 2020 Elsevier Inc. All rights reserved.)

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