Takeshi Kuwata is chief of the Department of Genetic Medicine and Services at the National Cancer Center Hospital East in Tokyo. In addition to being a board-certified pathologist, molecular pathologist, and medical geneticist, he is also an executive board member of the Japanese Gastric Cancer Association and a committee member for the Japanese classification of gastric carcinoma, the Japanese guidelines for HER2 testing in breast/gastric cancer, and the Japanese treatment guidelines for gastric cancer. Specializing in molecular and pathological diagnosis of GI tract and hereditary cancers, he is also involved in the development and standardization of new diagnostics.