The multivariate logistics analysis identified that tumor size [1.038 (1.014–1.062)], PAX1 hypomethylation [4.433 (1.131–17.380)], lymph node metastasis [2.854 (1.067–7.638)], and pathological type [7.473 (1.011–55.254)] were independent risk factors for residual tumor after radiotherapy in cervical cancer (Table 2). The gene discussed is PAX1; the disease is metastatic malignant neoplasm in the lymph nodes.