A study reported that hsa-mir-211 can promote the proliferation and invasion of lung cancer cell lines by targeting MxA.[25] However, another study found that hsa-mir-211 can inhibit cervical cancer cell invasion and epithelial-mesenchymal transition by targeting MUC4.[26] At present, there is no research report on the role of hsa-mir-211 in EC, and further experimental research is needed. Here, MUC4 is linked to lung cancer.