With a background in computer science and biostatistics, he has worked on various topics in genetic epidemiological studies of complex diseases using genome-wide association, and currently whole-genome and whole-exome sequencing approaches. Dr. Peng is the author of one of the top population genetics simulation software simuPOP and the leading author of a related book "Forward-time population genetics simulations, methods, implementation, and applications" (Wiley-Blackwell, ASIN: B0072LWP12). He organized two workshops on the applications of simuPOP, one at the University of Alabama at Birmingham, another at the Rice University, Houston. Dr. Peng is the core developer of variant tools and has extensive experience in analyzing whole genome and whole exome sequencing projects using this tool.