To verify whether the regulation of tumor exosomal ENPP1 on immune response induced by 2′3′‐cGAMP is dependent on STING, STING inhibitor STING‐IN‐2[36] was introduced into the co‐culture system to inhibit STING in THP1‐Lucia ISG cells. The gene discussed is STING1; the disease is neoplasm.