The AUCs of the types of early clinical stage cancer types were as follows: anti‐p53 Abs (0.697), anti‐FIRΔexon2 Abs (0.634), CEA (0.549), anti‐SOHLH1 Abs (0.529), and CA19‐9 (0.512; Figure 4A). This evidence concerns the gene TP53 and cancer.