No correlation was found between Sox2 expression and age (P = 0.375), sex(P = 0.701), Lauren classification(P = 0.623), cardiac cancer(P = 0.199), T stage(P = 0.430), N stage(P = 0.166), TNM stage (P = 0.894) or ALDH1A1 expression(P = 0.192) in gastric cancer (Table 1). The gene discussed is ALDH1A1; the disease is gastric cancer.