A latent class model with hidden Markov dependence for array CGH data.
A latent class model with hidden Markov dependence for array CGH data.
复制标题
一个具有隐藏Markov依赖性阵列CGH数据的潜在类模型。
DOI:
10.1111/j.1541-0420.2009.01226.x
复制
发表时间:
2009-12
期刊:
影响因子:
1.9
通讯作者:
Betensky RA
中科院分区:
文献类型:
--
作者:
DeSantis SM;Houseman EA;Coull BA;Louis DN;Mohapatra G;Betensky RA
Array CGH is a high-throughput technique designed to detect genomic alterations linked to the development and progression of cancer. The technique yields fluorescence ratios that characterize DNA copy number change in tumor versus healthy cells. Classification of tumors based on aCGH profiles is of scientific interest but the analysis of these data is complicated by the large number of highly correlated measures. In this article, we develop a supervised Bayesian latent class approach for classification that relies on a hidden Markov model to account for the dependence in the intensity ratios. Supervision means that classification is guided by a clinical endpoint. Posterior inferences are made about class-specific copy number gains and losses. We demonstrate our technique on a study of brain tumors, for which our approach is capable of identifying subsets of tumors with different genomic profiles, and differentiates classes by survival much better than unsupervised methods.
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影响因子:
5.8
作者:
Marioni, JC;Thorne, NP;Tavaré, S
通讯作者:
Tavaré, S
影响因子:
4.1
作者:
Mohapatra, Gayatry;Betensky, Rebecca A.;Louis, David N.
通讯作者:
Louis, David N.
影响因子:
1.9
作者:
Larsen, K
通讯作者:
Larsen, K
DOI:
10.1093/jnci/90.19.1473
发表时间:
1998-10-07
期刊:
JOURNAL OF THE NATIONAL CANCER INSTITUTE
影响因子:
--
作者:
Cairncross, JG;Ueki, K;Louis, DN
通讯作者:
Louis, DN
DOI:
10.1111/j.1467-9868.2006.00545.x
发表时间:
2006-01-01
影响因子:
5.8
作者:
Ray, S;Mallick, B
通讯作者:
Mallick, B