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2017 ; 170
(3
): 564-576.e16
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Defining a Cancer Dependency Map
#MMPMID28753430
Tsherniak A
; Vazquez F
; Montgomery PG
; Weir BA
; Kryukov G
; Cowley GS
; Gill S
; Harrington WF
; Pantel S
; Krill-Burger JM
; Meyers RM
; Ali L
; Goodale A
; Lee Y
; Jiang G
; Hsiao J
; Gerath WFJ
; Howell S
; Merkel E
; Ghandi M
; Garraway LA
; Root DE
; Golub TR
; Boehm JS
; Hahn WC
Cell
2017[Jul]; 170
(3
): 564-576.e16
PMID28753430
show ga
Most human epithelial tumors harbor numerous alterations, making it difficult to
predict which genes are required for tumor survival. To systematically identify
cancer dependencies, we analyzed 501 genome-scale loss-of-function screens
performed in diverse human cancer cell lines. We developed DEMETER, an analytical
framework that segregates on- from off-target effects of RNAi. 769 genes were
differentially required in subsets of these cell lines at a threshold of six SDs
from the mean. We found predictive models for 426 dependencies (55%) by nonlinear
regression modeling considering 66,646 molecular features. Many dependencies fall
into a limited number of classes, and unexpectedly, in 82% of models, the top
biomarkers were expression based. We demonstrated the basis behind one
such predictive model linking hypermethylation of the UBB ubiquitin gene to a
dependency on UBC. Together, these observations provide a foundation for a cancer
dependency map that facilitates the prioritization of therapeutic targets.