CRABP2 and esophageal squamous cell carcinoma: The result showed that the gender (p = 0.119), ethnicity (p = 0.118), differentiation of degree (p = 0.000), depth of invasion (p = 0.117), AJCC stage (p = 0.028), lymph node metastasis (p = 0.140), hematogenous metastasis (p = 0.020), nerve invasion (p = 0.045), and CRABP2 expression (p = 0.079) were the risk factors for OS of patients with ESCC (Table 5).