EGFR and non-small cell lung carcinoma: Fiberoptic bronchoscopy biopsy showed: (right lower lung dorsal segment): non-small cell lung cancer, classified as poorly differentiated cancer; immunohistochemistry: CK (+), Ki67 (60% +), p63 individual cells (+), TTF-1 (-), Syn (-), CD56 (-), CgA (-), PDL-1 TPS: 2% (Fig. 1B); Genetic testing: EGFR (-), ALK (-), ROS1 (-).