As a result, age < 40 years (p = 0.039, HR 0.32 (0.11–0.95)), ALK-positive tumor (p = 0.010, HR 0.24 (0.08–0.71), and MTX-based chemotherapy (p = 0.003, HR 0.17 (0.05–0.56)) were factors associated with a good prognosis. Here, ALK is linked to neoplasm.