An increase in survival rate for patients with gastric cancer is expected to come from a personalized medicine approach. So far, gastric cancer treatments such as surgery, radiotherapy, chemotherapy or immunotherapy were chosen based on the type of the tumour. While these treatments might work for one person, this does not mean they will work for another, despite the possible side effects. Through personalized medicine, gastric cancer treatment is chosen based on who the patient is, instead of the type of tumour, leading to an improved prognosis of gastric cancer.