Dr. Park conducts genetic and molecular epidemiologic studies to identify susceptible genetic markers in the exposure-to-disease continuum, as well as serological biomarkers and prognosis in the development of various cancers. She studies gastrointestinal cancers (stomach and biliary tract cancers) and endocrine cancers that are female dominant (breast and thyroid cancers), focusing on the etiologic heterogeneity of cancers. Her ongoing studies include investigations of genetic and serological markers with particular emphasis on hormone biosynthesis-metabolism-transport axis and infection-inflammation-immunity axis. Studies in the identification of genetic and molecular markers utilizing novel biological methods are also underway. She has conducted a series of methodological investigation derived from clinical epidemiologic studies and medical statistics.