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Breast Cancer Research and Treatment

Erschienen in:

09.02.2019 | Preclinical study

Revealing clonality and subclonality of driver genes for clinical survival benefits in breast cancer

verfasst von: Yujia Lan, Erjie Zhao, Shangyi Luo, Yun Xiao, Xia Li, Shujun Cheng

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 1/2019

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Abstract

Purpose

Genomic studies have revealed that genomic aberrations play important roles in the progression of this disease. The aim of this study was to evaluate the associations between clinical survival outcomes of the clonality and subclonality status of driver genes in breast cancer.

Methods

We performed an integrated analysis to infer the clonal status of 55 driver genes in breast cancer data from TCGA. We used the chi-squared test to assess the relations between clonality of driver gene mutations and clinicopathological factors. The Kaplan–Meier method was performed for the visualization and the differences between survival curves were calculated by log-rank test. Univariate and multivariate Cox proportional hazards regression models were used to adjust for clinicopathological factors.

Results

We identified a high proportion of clonal mutations in these driver genes. Among them, there were 17 genes showing significant associations between their clonality and multiple clinicopathologic factors. Performing survival analysis on BRCA patients with clonal or subclonal driver gene mutations, we found that clonal ERBB2, FOXA1, and KMT2C mutations and subclonal GATA3 and RB1 mutations predicted shorter overall survival compared with those with wild type. Furthermore, clonal ERBB2 and FOXA1 mutations and subclonal GATA3 and RB1 mutations independently predicted for shorter overall survival after adjusting for clinicopathological factors. By longitudinal analysis, the clonality of ERBB2, FOXA1, GATA3, and RB1 significantly predicted patients’ outcome within some specific BRCA tumor stages and histological subtypes.

Conclusions

In summary, these clonal or subclonal mutations of driver genes have implications for diagnosis, prognosis, and treatment with BRCA patients.

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Titel: Revealing clonality and subclonality of driver genes for clinical survival benefits in breast cancer
verfasst von: Yujia Lan
Erjie Zhao
Shangyi Luo
Yun Xiao
Xia Li
Shujun Cheng
Publikationsdatum: 09.02.2019
Verlag: Springer US
Erschienen in: Breast Cancer Research and Treatment / Ausgabe 1/2019
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI: https://doi.org/10.1007/s10549-019-05153-8

Springer Medizin

Revealing clonality and subclonality of driver genes for clinical survival benefits in breast cancer

Abstract

Purpose

Methods

Results

Conclusions

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Springer Medizin

Abstract

Purpose

Methods

Results

Conclusions

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