Gastric cancer, also known as stomach cancer, refers to the development of malignant tumors in the lining of the stomach. It is one of the most common types of cancer worldwide and is a significant cause of cancer-related deaths. Gastric cancer can develop in any part of the stomach and can spread to nearby lymph nodes and other organs if not detected and treated early. Research in gastric cancer focuses on understanding the causes and risk factors for the disease, developing better methods for early detection and diagnosis, improving treatment options such as surgery, chemotherapy, and radiation therapy, and identifying potential new therapies such as targeted therapy and immunotherapy. Researchers also study how genetic and environmental factors contribute to the development of gastric cancer and how these factors can be targeted for prevention and treatment. Overall, the goal of research in gastric cancer is to improve outcomes and quality of life for individuals affected by this disease.