Zhaojun Zhang

Zhaojun ZhangGraduate Student
Wang Group, The University of North Carolina


Department of Computer Science
Campus Box 3175, Brooks Computer Science Building
201 South Columbia Street
UNC-Chapel Hill
Chapel Hill, NC 27599-3175

Phone: (919) 960-1852
Email: zzj@cs.unc.edu

The goal of genome wide association (GWA) mapping in modern genetics is to identify genes or narrow regions in the genome that contribute to genetically complex phenotypes such as morphology or disease. Among the existing methods, tree-based association mapping methods show obvious advantages over single marker-based and haplotype-based methods because they incorporate information about the evolutionary history of the genome into the analysis. However, existing tree-based methods are designed primarily for binary phenotypes derived from case/control studies or fail to scale genome-wide.

In this project, we introduce TreeQA, a quantitative GWA mapping algorithm. TreeQA utilizes local perfect phylogenies constructed in genomic regions exhibiting no evidence of historical recombination. By efficient algorithm design and implementation, TreeQA can efficiently conduct quantitative genom-wide association analysis and is more effective than the previous methods.