STING1 and neoplasm: cGAS‐STING innate immune signaling also suppresses tumors by promoting antigen presentation and enhancing the cytotoxicity of immune cells.[8] DCs are the main antigen‐presenting cells that link innate and adaptive immunity.[25] Therefore, we determined the activation of DCs and the cytotoxicity of PBMCs when they were cocultured with HT‐DNA‐treated tumor cells.