An international team of researchers has identified hundreds of new genes that are mutated in stomach cancer, in a finding they say could lead to treatments tailored to the genetic make-up of individual stomach tumors. Stomach cancer is the second leading cause of cancer death worldwide and kills more than 700,000 people a year, according to the World Health Organization. Treatment is often difficult and unsuccessful. In the United States, less than one-quarter of stomach cancer patients survive more than five years after diagnosis.
