Mutational signature analysis

XS Xiaohan Shi
YL Yunguang Li
QY Qiuyue Yuan
ST Shijie Tang
SG Shiwei Guo
YZ Yehan Zhang
JH Juan He
XZ Xiaoyu Zhang
MH Ming Han
ZL Zhuang Liu
YZ Yiqin Zhu
SG Suizhi Gao
HW Huan Wang
XX Xiongfei Xu
KZ Kailian Zheng
WJ Wei Jing
LC Luonan Chen
YW Yong Wang
GJ Gang Jin
DG Dong Gao
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Somatic base substitutions were classified into 96 mutation trinucleotides and the somatic mutation rate of each type of substitutions was calculated to generate a context-specific mutation profile. Mutational signatures were extracted from the context-specific mutation profile by using NMF algorithm (“MutationalPatterns” package). Consensus clustering (“CancerSubtypes” package; clusterAlg = “hc”, distance = “pearson”, innerLinkage = “ward.D2”) was performed on contribution of each mutational signature among all samples.

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