DGCR8 and head and neck squamous cell carcinoma: In addition, under irradiation, miR-27a-3p mimics induced marked death of HNSCC cells in the colony formation assay, which suggested that miR-27a-3p improved the radiosensitivity of HNSCC cells DGCR8 as an oncogene is upregulated in breast cancer, ovarian cancer and glioma [43].