E2F1 and gastric cancer: Performing the correlation of e2f-1 expression with prognosis among patients with different TNM stages of GC generated the results as follows: the total positivity rate of e2f-1 expression was 41.3% (50 cases/121 cases), and the positivity rates for Stage Ia, Ib, II, IIIa, IIIb and IV were 62.5% (10 cases/16 cases), 47.1% (8 cases/17 cases), 55% (11 cases/20 cases), 40% (8 cases/20 cases), 27.3% (6 cases/22 cases) and 26.9% (7 cases/26 cases), respectively.