Fig. 4

Kaplan–Meier survival curves of ESCC patients with low and high expression of ASPP1, ASPP2, and P53. The overall survival (OS) and disease-free survival (DFS) curves of patients with high ASPP1 expression are not significantly different from those of patients with low ASPP1 expression. Patients with high ASPP2 expression have higher 5-year OS and DFS rates than those with low ASPP2 expression. Patients with high P53 expression have a lower 5-year DFS rate than those with low P53 expression, whereas the 5-year OS rates were similar for both groups