NET1 and cancer: There was a correlation in NET-1 expression between Ki67 expression (χ2 = 15.2906, r = 0.3430, every P < 0.05) (Fig. 2), tumor thickness (χ2 = 12.8197, r = 0.3220, every P < 0.05), or cancer differentiation (χ2 = 14.3131, r = 0.0.3542, every P < 0.05).