Dr. Woong- Yang Park earned M.D. from Seoul National University College of Medicine in 1988 and Ph.D. in Biochemistry from Seoul National University Graduate School in 1995. He worked in Robert Darnell lab in Rockefeller University as a postdoctoral fellow to uncover the function of paraneoplastic neural antigens. After returning to Seoul National University as a professor in Department of Biochemistry in College of Medicine, he started research projects on genomic analysis on human diseases using microarray and NGS techniques. Most of his genomic studies focused on Mendelian disorders such as skeletal dysplasia, deafness, and retinitis pigmentosa to find pathogenic variants with whole exome sequencing. In 2013, he moved to Samsung Genome Institute in Samsung Medical Center as a director. His research interests are related to 1) tumor heterogeneity and evolution by single cell genome analysis; 2) combined analysis on clinical and genomic data; and 3) clinical utility of cell-free tumor DNA analysis.