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2016 ; 29
(4
): 440-451
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Intratumoral Heterogeneity of the Epigenome
#MMPMID27070699
Mazor T
; Pankov A
; Song JS
; Costello JF
Cancer Cell
2016[Apr]; 29
(4
): 440-451
PMID27070699
show ga
Investigation into intratumoral heterogeneity (ITH) of the epigenome is in a
formative stage. The patterns of tumor evolution inferred from epigenetic ITH and
genetic ITH are remarkably similar, suggesting widespread co-dependency of these
disparate mechanisms. The biological and clinical relevance of epigenetic ITH are
becoming more apparent. Rare tumor cells with unique and reversible epigenetic
states may drive drug resistance, and the degree of epigenetic ITH at diagnosis
may predict patient outcome. This perspective presents these current concepts and
clinical implications of epigenetic ITH, and the experimental and computational
techniques at the forefront of ITH exploration.