We found that the human gDNAs were significantly increased in the cytoplasm of mouse DCs that were co‐cultured with the Arf1‐ablated human DLD1 cancer cells in comparison with those in the cytoplasm of mouse DCs that were co‐cultured with the Scramble‐ablated human DLD1 tumor cells (Figure 2c). The gene discussed is ARF1; the disease is cancer.