Abstract
Purpose
Triple-negative breast cancer (TNBC) is a highly heterogeneous disease. Patients with early-stage TNBCs have distinct likelihood of distant recurrence. This study aimed to develop a prognostic signature of early-stage TNBC patients to improve risk stratification.
Methods
Using RNA-sequencing data, we analyzed 189 pathologically confirmed pT1-2N0M0 TNBC patients and identified 21 mRNAs that were highly expressed in tumor and related to relapse-free survival. All-subset regression program was used for constructing a 7-mRNA signature in the training set (n = 159); the accuracy and prognostic value were then validated using an independent validation set (n = 158).
Results
Here, we profiled the transcriptome data from 189 early-stage TNBC patients along with 50 paired normal tissues. Early-stage TNBCs mainly consisted of basal-like immune-suppressed subtype and had higher homologous recombination deficiency scores. We developed a prognostic signature including seven mRNAs (ACAN, KRT5, TMEM101, LCA5, RPP40, LAGE3, CDKL2). In both the training (n = 159) and validation set (n = 158), this signature could identify patients with relatively high recurrence risks and served as an independent prognostic factor. Time-dependent receiver operating curve showed that the signature had better prognostic value than traditional clinicopathological features in both sets. Functionally, we showed that TMEM101 promoted cell proliferation and migration in vitro, which represented a potential therapeutic target.
Conclusions
Our 7-mRNA signature could accurately predict recurrence risks of early-stage TNBCs. This model may facilitate personalized therapy decision-making for early-stage TNBCs individuals.
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Data availability
The datasets analyzed during the current study are available in the Gene Expression Omnibus (GSE76250, HTA2.0) and Sequence Read Archive (SRP157974, RNA-seq).
Abbreviations
- AIC:
-
Akaike information criterion
- AUC:
-
Area under curve
- BLIS:
-
Basal-like and immune-suppressed
- ER:
-
Estrogen receptor
- HER2:
-
Human epidermal growth factor receptor 2
- HR:
-
Hormone receptor
- HRD:
-
Homologous recombination deficiency
- IM:
-
Immunomodulatory
- LAR:
-
Luminal androgen receptor
- LASSO:
-
Least absolute shrinkage and selection operator
- MES:
-
Mesenchymal-like
- RFS:
-
Relapse-free survival
- ROC:
-
Receiver operating characteristic
- PR:
-
Progestogen receptor
- RT-qPCR:
-
Real-time quantitative-polymerase chain reaction
- siRNA:
-
Small interfering RNAs
- TNBC:
-
Triple-negative breast cancer
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Acknowledgements
This work was supported by the Program of Shanghai Academic/Technology Research Leader (20XD1421100), the Fok Ying-Tong Education Foundation for College Young Teachers (171034), the Shanghai Sailing Program (19YF1409000), the Innovation Team of Ministry of Education (IRT1223), and the Shanghai Key Laboratory of Breast Cancer (12DZ2260100). The funders had no role in the study design, data collection and analysis, or manuscript preparation.
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Conception and design: Y-SY, Y-XR, C-LL, XJ, X-EX, Y-ZJ, and Z-MS; Development of methodology: Y-SY, Y-XR, X-EX, and Y-ZJ; Acquisition of data: Y-SY, Y-XR, SH, and Y-ZJ; Analysis and interpretation of data: Y-SY, Y-XR, C-LL, XJ, and Y-ZJ; Writing, review, and/or revision of the manuscript: Y-SY, Y-XR, C-LL, SH, XJ, Y-ZJ, and Z-MS; Administrative, technical, or material support: Y-SY, Y-XR, SH, XJ, X-EX, and Y-ZJ; Study supervision: Y-ZJ, Z-MS.
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The independent ethics committee/institutional review board of FUSCC (Shanghai Cancer Center Ethics Committee) approved our study.
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Yang, YS., Ren, YX., Liu, CL. et al. The early-stage triple-negative breast cancer landscape derives a novel prognostic signature and therapeutic target. Breast Cancer Res Treat 193, 319–330 (2022). https://doi.org/10.1007/s10549-022-06537-z
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DOI: https://doi.org/10.1007/s10549-022-06537-z