TP53 and cancer: Concerning the migration assay, Figure 3B shows also that the secretome derived by H1299 cancer cells stably expressing R273H mutant p53 (CM-H1299 R273H) induced cell migration of AsPC-1 p53-null cells as compared to mock control (CM-H1299 mock), further supporting the results on AsPC-1 secretome shown in Figure 3A.