TRPM7 and metastatic malignant neoplasm in the lymph nodes: The univariate analyses showed that TRPM7 methylation status was significantly associated with molecular subtypes (OR = 1.27; 95% CI = 1.00–1.63; P = 0.05), lymph node metastasis (OR = 0.09; 95% CI = 0.04–0.22; P = 0.001), and radiotherapy (OR = 0.37; 95% CI = 0.21–0.64; P = 0.001) (Table 2).