ALDH1A1 and nasopharyngeal carcinoma: It can be seen from the data in Table 1 that the expression of ALDH1A1 had an evidently positive relation with lymph node status, clinical stages and survival status of patients with NPC (P = 0.038, P = 0.001 and P < 0.001, respectively), but there was no relation could be seen in terms of age, gender, tumor stages and metastasis (all P > 0.05).