An endobronchial ultrasound–guided transbronchial needle aspiration (EBUS‐TBNA) of the mediastinal lymph nodes revealed malignant cells positive for TTF‐1 (Figure 1c,d) and strong positivity for ALK (Figure 1e), and the Amoy lung cancer panel detected an ALK fusion, confirming a diagnosis of ALK‐positive lung adenocarcinoma with clinical stage IVB. This evidence concerns the gene ALK and lung cancer.