NCR3LG1 and esophageal squamous cell carcinoma: Multi-factors Cox regression analyses showed that tumour size (HR: 1.749, 95% CI: 1.089–2.807; P = 0.021), lymphatic metastasis status (HR: 2.157, 95% CI: 1.002–4.644; P = 0.049) and B7-H6 expression (HR: 1.751, 95% CI: 1.071–2.861; P = 0.025) were independent prognostic factors in ESCC, as shown in Table 3.