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2016 ; 2
(ä): 16025
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Integrative analysis of mutational and transcriptional profiles reveals driver
mutations of metastatic breast cancers
#MMPMID27625789
Lee JH
; Zhao XM
; Yoon I
; Lee JY
; Kwon NH
; Wang YY
; Lee KM
; Lee MJ
; Kim J
; Moon HG
; In Y
; Hao JK
; Park KM
; Noh DY
; Han W
; Kim S
Cell Discov
2016[]; 2
(ä): 16025
PMID27625789
show ga
Despite the explosion in the numbers of cancer genomic studies, metastasis is
still the major cause of cancer mortality. In breast cancer, approximately
one-fifth of metastatic patients survive 5 years. Therefore, detecting the
patients at a high risk of developing distant metastasis at first diagnosis is
critical for effective treatment strategy. We hereby present a novel systems
biology approach to identify driver mutations escalating the risk of metastasis
based on both exome and RNA sequencing of our collected 78 normal-paired breast
cancers. Unlike driver mutations occurring commonly in cancers as reported in the
literature, the mutations detected here are relatively rare mutations occurring
in less than half metastatic samples. By supposing that the driver mutations
should affect the metastasis gene signatures, we develop a novel computational
pipeline to identify the driver mutations that affect transcription factors
regulating metastasis gene signatures. We identify driver mutations in ADPGK,
NUP93, PCGF6, PKP2 and SLC22A5, which are verified to enhance cancer cell
migration and prompt metastasis with in vitro experiments. The discovered somatic
mutations may be helpful for identifying patients who are likely to develop
distant metastasis.