In total, we identified nine intrathoracic neoplasms with immunohistochemical loss of INI1 (SMARCB1) (Supplementary Table 1), of which all were initially classified as intrathoracic neoplasms from either the lung (N = 3), lung/pleura (N = 1), pleura (N = 2), pleura/thoracic wall (N = 1) or mediastinum (N = 2). The gene discussed is SMARCB1; the disease is neoplasm.