ITGB2 and small cell lung carcinoma: Interestingly, lung tissue from SCLC patients in C2 showed significantly higher ITGB2 expression (M = 0.04; IQR = 0.03) than the lung tissue from SCLC patients in C1 (M = 0.01; IQR = 0.01; P = 2 E-03; Figure 3D; Source Data S1).