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Multi-locus penetrance variance analysis method for association study in complex diseases
Xiangqing Sun1, Zhongqi Zhang, Yulong Zhang
1Ministry of Education (MOE) Key Laboratory of Bioinformatics, Tsinghua University, Beijing, China.
Abstract:
Common heritable diseases often result from the action of several different genes, each of which contributes to the total observed variability in the disease trait. Traditional single-locus association approaches rely heavily on the marginal effects of single-locus and tend to ignore the multigenic nature of complex diseases. The increasing request for localizing genes underlying traits in multi-gene diseases has led to the development of some statistical methods. In this study, we develop a multi-locus analysis method - multi-locus penetrance variance analysis (MPVA), and conduct systematical simulation studies to evaluate its performance. Our results show that compared with other multi-locus methods, MPVA has some advantage in detecting complicated interactions under different epistatic models, and its performance is stable and robust.
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