UCA1 and metastatic malignant neoplasm in the lymph nodes: Univariable Cox regression analyses showed that tumor size (>3 cm vs. ≤3 cm), lymph node metastasis (present vs. absent), histological differentiation (poor vs. well/moderate), expression of AFAP1-AS1 (high vs. low), expression of UCA1 (high vs. low) and expression of ENSG00000218510 (high vs. low) were significant prognostic factors for overall survival prediction (Table 4).