Figure 4. The eight-lncRNA signature was associated with prognosis in stage I patients. Kaplan-Meier analysis of the overall survival of patients with stage I in training group (A), validation group-1 (B) and validation group-2 (C); Kaplan-Meier analysis of the disease-free survival of patients with stage I in training group (D), validation group-1 (E) and validation group-2 (F).