PTK2 and neoplasm: A similar result was confirmed for FAK: expression was significantly different between the samples (p < 0.001) (Figure 1C) and post hoc analysis confirmed that expression was lower in the tumor center (16,037.69 ± 11,342.30) and tumor periphery (18,338.54 ± 8824.04) than in the controls (39,665.24 ± 14,231.92) (Table 1 and Figure 2C).