Young (adjusted OR 3.947, 95% CI 1.873–8.314, P < 0.001) and lung adenocarcinoma (adjusted OR 2.950, 95% CI 0.998–8.719, P = 0.050) were independent variables associated with ALK/ROS1 gene fusions (Table 5). Here, ROS1 is linked to lung adenocarcinoma.