KDM1A and neoplasm: As shown Table 1, high protein levels of LSD1 were significantly associated with survival (χ2 = 12.87, P = 0.0003), but not correlated with any of the clinicopathologic characteristics (including age, smoking habits, sex, tumor diameter, histologic type, visceral pleural invasion, pathologic stage, or type of operation; all, P>0.05).