cGAS‐STING signalling consists of the synthase for the second messenger cyclic GMP‐AMP (cGAS) and the cyclic GMP‐AMP receptor stimulator of interferon genes (STING), which catches abnormal DNAs (dsDNAs, microbial DNAs, cytosolic DNAs, released mitochondrial DNAs, etc.)to activate an innate immune response against viral infections.13, 14. Here, CGAS is linked to viral infectious disease.