We and others have shown that BRCA2‐deficient cells and tumours activate innate immune responses orchestrated by the cGAS/STING pathway, as a result of spontaneous DNA damage accumulation (Ding et al, 2018; Chabanon et al, 2019; Pantelidou et al, 2019; Reisländer et al, 2019). Here, CGAS is linked to neoplasm.