ING4 and neoplasm: After treatment with PBS, Ad, Ad‐ING4, Ad‐OSM and Ad‐ING4‐OSM, respectively, the tumours were excised (Figure 5B), the change in tumour weight and volume is shown in Figure 5C,D, and Ad‐ING4‐OSM remarkably suppressed Hep‐2 tumour growth in vivo compared to Ad‐ING4 and Ad‐OSM groups, while Ad exerted a slight suppression effect compared to PBS.