Probe-specific mixed-model approach to detect copy number differences using multiplex ligation-dependent probe amplification (MLPA).
Probe-specific mixed-model approach to detect copy number differences using multiplex ligation-dependent probe amplification (MLPA).
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探针特异性混合模型方法使用多重连接依赖性探针扩增(MLPA)检测拷贝数差异。
DOI:
10.1186/1471-2105-9-261
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发表时间:
2008-06-04
影响因子:
3
通讯作者:
Estivill, Xavier
中科院分区:
文献类型:
--
作者:
Gonzalez, Juan R.;Carrasco, Josep L.;Armengol, Lluis;Villatoro, Sergi;Jover, Lluis;Yasui, Yutaka;Estivill, Xavier
MLPA method is a potentially useful semi-quantitative method to detect copy number alterations in targeted regions. In this paper, we propose a method for the normalization procedure based on a non-linear mixed-model, as well as a new approach for determining the statistical significance of altered probes based on linear mixed-model. This method establishes a threshold by using different tolerance intervals that accommodates the specific random error variability observed in each test sample. Through simulation studies we have shown that our proposed method outperforms two existing methods that are based on simple threshold rules or iterative regression. We have illustrated the method using a controlled MLPA assay in which targeted regions are variable in copy number in individuals suffering from different disorders such as Prader-Willi, DiGeorge or Autism showing the best performace. Using the proposed mixed-model, we are able to determine thresholds to decide whether a region is altered. These threholds are specific for each individual, incorporating experimental variability, resulting in improved sensitivity and specificity as the examples with real data have revealed.
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影响因子:
2.9
作者:
Gerdes, T;Kirchhoff, M;Bryndorf, T
通讯作者:
Bryndorf, T
影响因子:
8.8
作者:
Huang, Chien-Hao;Chang, Yih-Yuan;Ko, Tsang-Ming
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Ko, Tsang-Ming
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2.8
作者:
Lai, KKS;Lo, IFM;Lam, STS
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Lam, STS
影响因子:
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Iafrate, AJ;Feuk, L;Lee, C
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Lee, C
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56.9
作者:
Sebat, J;Lakshmi, B;Wigler, M
通讯作者:
Wigler, M