Of the 266 surgically resected NSCLCs, including 203 adenocarcinomas, 51 squamous cell carcinomas, 10 large cell carcinomas, and 2 adenosquamous cell carcinomas, positive MYH9 expression in tumor cells was observed in 102 cases (38.3%) (Fig. 4). The gene discussed is MYH9; the disease is adenocarcinoma.