Gastric (stomach) cancer is the third-leading cause of cancer death worldwide. New ways are needed to detect this cancer early, when it can be successfully treated. This research team is working to identify biomarkers, such as particular bits of DNA or cells shed from the tumor, that circulate in the blood system and indicate the presence of gastric cancer. The team has also developed a new detection technology using a pill-sized camera that can be swallowed by the patient and a marker that “lights up” cancer cells. This may enable researchers to capture images of stomach tissue at risk of developing cancer. If validated in a clinical trial, these methods will help doctors screen people in groups at risk of gastric cancer.