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2017 ; 8
(46
): 81215-81225
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The roles of ncRNAs in the diagnosis, prognosis and clinicopathological features
of breast cancer: a systematic review and meta-analysis
#MMPMID29113381
Tang S
; Fan W
; Xie J
; Deng Q
; Wang P
; Wang J
; Xu P
; Zhang Z
; Li Y
; Yu M
Oncotarget
2017[Oct]; 8
(46
): 81215-81225
PMID29113381
show ga
BACKGROUND: A number of studies have shown that noncoding RNAs (ncRNAs) are
abnormally expressed in breast cancers. However, the roles of ncRNAs remain
unclear in breast cancer. Here, we aim to investigate the potential diagnostic
and prognostic roles of ncRNAs in breast cancer. METHODS: Comprehensive
literature search in Medline and Web of Science and a meta-analysis were
performed to identify the association between ncRNAs and diagnosis, prognosis,
and clinicopathological features of breast cancer. RESULTS: A total of 103
eligible studies, involving16, 828 independent participants, were included in the
meta-analysis. In total, there were 98 individual and 11 grouped ncRNAs. 51
studies were eligible for survival analysis, 27 studies were eligible for
diagnostic analysis, and 46 studies were eligible for clinicopathological
features analysis. The abnormal expression of ncRNAs is associated with OS, RFS
and PFS in breast cancer patients. For the diagnosis value of ncRNAs, the pooled
OR and 95% CI for sensitivity, specificity, DOR and AUC on all ncRNAs were 0.83
[95% CI: 0.82- 0.84], 0.80 [95% CI: 0.79- 0.82], 24.77 [95% CI: 17.44- 35.16] and
0.9037, respectively. The analysis showed that downregulation of ncRNAs in breast
cancer was associated with decreased risk of LNM, increased tumor size and PR
expression, whereas, upregulation of ncRNAs was associated with increased HER2
expression. CONCLUSIONS: High expression of ncRNAs was associated with poor OS,
RFS, and PFS, while low expression of ncRNAs was related to favorable OS and RFS.
Meanwhile, ncRNAs have potential diagnostic value for breast cancer.