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2014 ; 15
(4
): 402-10
Nephropedia Template TP
gab.com Text
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English Wikipedia
The expression level of small non-coding RNAs derived from the first exon of
protein-coding genes is predictive of cancer status
#MMPMID24534129
Zovoilis A
; Mungall AJ
; Moore R
; Varhol R
; Chu A
; Wong T
; Marra M
; Jones SJ
EMBO Rep
2014[Apr]; 15
(4
): 402-10
PMID24534129
show ga
Small non-coding RNAs (smRNAs) are known to be significantly enriched near the
transcriptional start sites of genes. However, the functional relevance of these
smRNAs remains unclear, and they have not been associated with human disease.
Within the cancer genome atlas project (TCGA), we have generated small RNA
datasets for many tumor types. In prior cancer studies, these RNAs have been
regarded as transcriptional "noise," due to their apparent chaotic distribution.
In contrast, we demonstrate their striking potential to distinguish efficiently
between cancer and normal tissues and classify patients with cancer to subgroups
of distinct survival outcomes. This potential to predict cancer status is
restricted to a subset of these smRNAs, which is encoded within the first exon of
genes, highly enriched within CpG islands and negatively correlated with DNA
methylation levels. Thus, our data show that genome-wide changes in the
expression levels of small non-coding RNAs within first exons are associated with
cancer.