Fast Linkage Analysis with MOD Scores Using Algebraic Calculation
Fast Linkage Analysis with MOD Scores Using Algebraic Calculation
复制标题
使用代数计算进行 MOD 分数的快速连锁分析
DOI:
10.1159/000369065
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发表时间:
2014
期刊:
影响因子:
1.8
通讯作者:
Konstantin Strauch
中科院分区:
文献类型:
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作者:
Markus Brugger;Konstantin Strauch
Objective:As the mode of inheritance is often unknown for complex diseases, a MOD-score analysis, in which the parametric LOD score is maximized with respect to the trait-model parameters, can be a powerful approach in genetic linkage analysis. Because the calculation of the disease-locus likelihood is the most time-consuming step in a MOD-score analysis, we aimed to optimize this part of the calculation to speed up linkage analysis using the GENEHUNTER-MODSCORE software package.Methods:Our new algorithm is based on minimizing the effective number of inheritance vectors by collapsing them into classes. To this end, the disease-locus-likelihood contribution of each inheritance vector is represented and stored in its algebraic form as a symbolic sum of products of penetrances and disease-allele frequencies. Simulations were used to assess the speedup of our new algorithm.Results:We were able to achieve speedups ranging from 1.94 to 11.52 compared to the original GENEHUNTER-MODSCORE version, with higher speedups for larger pedigrees. When calculating p values, the speedup ranged from 1.69 to 10.36.Conclusion:Computation times for MOD-score analysis, involving the evaluation of many tested sets of trait-model parameters and p value calculation, have been prohibitively high so far. With our new algebraic algorithm, such an analysis is now feasible within a reasonable amount of time.
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影响因子:
1.8
作者:
Flaquer A;Strauch K
通讯作者:
Strauch K
影响因子:
9.8
作者:
Risch,N
通讯作者:
Risch,N
影响因子:
1.8
作者:
Strauch, Konstantin
通讯作者:
Strauch, Konstantin
影响因子:
1.9
作者:
CLERGETDARPOUX, F;BONAITIPELLIE, C;HOCHEZ, J
通讯作者:
HOCHEZ, J
DOI:
10.1038/ejhg.2012.46
发表时间:
2012-09
期刊:
European journal of human genetics : EJHG
影响因子:
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作者:
通讯作者:
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