The University Hospital and Hanze University Groningen, in collaboration with the Merels World Foundation, are conducting scientific research on ROS1 fusion, a rare form of lung cancer. During this research, researchers are looking at, among other things, the effects of different drugs on this form of lung cancer. To do this, researchers need tissue or lung fluid from as many people as possible with ROS1 fusion lung cancer. This Divi explains to patients what the study entails so they can carefully consider whether they want to participate in the study.